Dermarolling for Stretchmarks
EDS Skin Care Forums Forum Index » Skincare Tools & Do-It-Yourself Skincare

free skin care · Mon Mar 08, 2010 3:25 pm

After reading the last few pots, I am glad I didn't go ahead and buy some stuff I found today then. I was infact going to buy some of the baby bottle sterilizer then also thought to buy some Isopropyl alcohol http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300303143110&ssPageName=STRK:MEWAX:IT

When I used my Dr.roller a few times early last year, I would rinse the roller after use under warm water then sit it in pure alcohol then rinse again, I really didn't know what else to 'clean' it with. I wont be using that roller again anyway, I have a new sealed Dr.roller I bought last year, so will use that.

Off topic, but about the single needles from owndoc... I am wondering if they would be ok to use to try and get rid of some of my Milia! (yeah, needles around eyes, not good... but it can't be any different to derma rolling around the eye area. Anyway, I'll look into it). I did a quick search on the forum and didn't find much other than people recommending certain 'products'.

Mon Mar 08, 2010 3:51 pm

Thanks This is Miranda. I bought a bottle of Barbicide after reading the discussion in the derma rolling for product penetration thread. This is used to sanitize hospital,nail salon equipment and such. However, I must admit after reading that thread I was still confused. I know Barbicide will thoroughly disinfect the needle, but I don't know if it will harm them. What do you think? I have the anti-rust one if that makes a difference. Thanks!

Mon Mar 08, 2010 7:43 pm

just used my single needles from owndoc for the first time today ...
it didn't really hurt at all, except I could tell when i was just about a nerve ending.
I did make sure the needle went all the way in.

I didn't use any numbing cream. I tried using the 1.5 mm roller but it didn't seem like it was penetrating my skin at all.

Can't wait to see results from the single needling. I wish I could post pictures ... oh well ... I'll post again in about 2 weeks after the swilling and blood spots go away.

Also .. on friday I'm seeing a dermatologist about using an "excimer laser" to bring pigment back to my white stretch marks. He uses it on patients with vitiligo (which i also have) ... so I'll let you know how that goes!

free skin care · Tue Mar 09, 2010 9:18 am

So I'm thinking about getting into this dermarolling thing.. LOL Anyways, I'm interested in using the single needle. My question is do you have to needle in a certain pattern or just straight up and down? I read about a star pattern but I didn't quite understand that!

I really hate my stretch marks. I feel embarrassed even admitting I have them! Thanks

free skin care · Tue Mar 09, 2010 11:29 am

SkinCareJunkie wrote:

So I'm thinking about getting into this dermarolling thing.. LOL Anyways, I'm interested in using the single needle. My question is do you have to needle in a certain pattern or just straight up and down? I read about a star pattern but I didn't quite understand that!

I really hate my stretch marks. I feel embarrassed even admitting I have them! Thanks

Hi SkinCareJunkie,

With the single needle you just prick each individual stretch mark (that you want to treat). The star pattern you describe sounds like the instructions for a Derma Roller, not a single needle.

You get some instructions with the single needle kit, but you can also read them online. So I quote from those instructions (which you can find here: http://dermaroller.owndoc.com/dermaroller-instructions.pdf):

Quote:

Dense needling: Stretchmarks / scars: You need many more pricks than with acne scars, depending on how wide and long the scar is. The idea is to get many more pricks in, per surface area, than a dermaroller can - and also deeper. The purpose is to break old scar tissue and remove damaged collagen. This dense needling is called "needle abrasion". You can try to needle-abrade even raised scars but do a test first because the results with raised scars are more unpredictable. This technique should only be used on already scarred skin, and then the effect will be beneficial. It is a slow process but you can work on your scars whenever you have the time. Make very many pricks per square cm / inch - just be sure not to prick the same skin more than once a month. The needle abrasion technique should only be used on stretchmarks and scars with hardened scar tissue.

There will be quite some pinpoint bleeding. Wipe it off with alcohol. Be patient - we got very good results doing this manual technique with a single needle but it took many months. Do not expect that your stretchmarks or scars will fully disappear. They will not disappear but they will become much less visible. Be patient and persevere! A dermaroller can't do this because it would make too many pricks in the "good" surrounding skin, damaging it.

Do not single-needle the same stretchmark / scar / wrinkle more than once a month, otherwise you will destroy the newly-formed collagen bundles! If you prick the skin quite densely and vigorously, do it only once every six to eight weeks.

The 'star pattern' used to explain how to roll with a Derma Roller:

Quote:

Roll in a star pattern: maximum five times horizontally, 5 times vertically, 5 times diagonally. Roll the dermaroller around five times in each direction. Back and forth equals two rolls. Lift the dermaroller slightly or change the angle of rolling and move back to the beginning.

free skin care · Tue Mar 09, 2010 6:11 pm

I just remembered I wanted to ask this the other day, but forgot.

The Derma Roller I received from owndoc wasn't sealed (unlike the 3 Dr.Rollers I previously bought). Did anyone elses come unsealed?

It's just on the owndoc forum I just found this:

Quote:

Our rollers and their plastic boxes are gamma-radiation sterilized and come in a hermetically sealed bag, inside a cardboard box

I received my owndoc roller in the 'coffin like' plastic box, which was in the cardboard outer box, nothing was sealed... (the Dr.Roller comes sealed in a plastic packaging). Just wondering if others received the same.

Tue Mar 09, 2010 10:10 pm

My roller came in the plastic coffin which was inside of a sealed plastic bag, which was then put into the small roller box.All of this was put into a thin cardboard mailing box.Hope that makes sense.

Wed Mar 10, 2010 2:12 am

Hi everybody,

At last i ordered my dermaroller with owndoc,

I placed order for the 1.5 mm dermaroller kit for rolling SM on my arms as well as 0.2 mm for skincare product absorption.

Since i am from UAE( Dubai ) the shipping cost was high ($37) Sad

but still i decided to go ahead because after reading all your encouraging posts i have a feeling that it will work and who knows maybe someday i ll be able to wear sleeveless stuff Pray

I think it take quite long time the package to be delivered so till then i try to prepare my skin for rolling.

P.S. Dear breezy42 & This is Miranda thank you (of course with delay ) to your kind replies to my earlier post

free skin care · Wed Mar 10, 2010 2:45 am

Quote:

I am wondering if they would be ok to use to try and get rid of some of my Milia

Kay, I did use my needle to 'puncture' a sort of tiny, lumpy, fluid thing on my cheek (group of three) and one above my lip. They didn't go away but are much less noticeable. It could work on your milia; if you're going to do it why not just try one and see how it goes. But TBH I'd be too nervous about doing that myself and would visit a specialist.

Quote:

I know Barbicide will thoroughly disinfect the needle, but I don't know if it will harm them. What do you think? I have the anti-rust one if that makes a difference.

Jezebel; this should work fine as it sounds like an anti-corrosion one. I guess hairdressers disinfect their scissors and need to keep them sharp as well. I believe some on the other thread use barbicide.

Quote:

I didn't use any numbing cream. I tried using the 1.5 mm roller but it didn't seem like it was penetrating my skin at all.

Peterpan, this sounds odd. I've read on another thread someone who felt their roller wasn't penetrating and asked for a replacement which made a difference. Maybe your roller is blunt? Tonia (the other poster) suggested rolling on your wrist whilst watching to see if the needles went in or just pushed the skin. I strongly suggest you do this test.

Quote:

My question is do you have to needle in a certain pattern or just straight up and down?

Skincarejunkie, when needling SM's you 'abrade' the skin. This means you needle only the scar tissue densely. With acne or chickenpox, you must only puncture the skin around 10 times.

Quote:

The Derma Roller I received from owndoc wasn't sealed

Kay, none of my MTS rollers came sealed either (two from Owndoc, one from Jaysun). They came in the clear 'coffin' with some wrapping just on the barrel part. I sterlized them all before use as I wasn't sure just how sterile there were.

Good luck a_b_vafa with your rolling!

BTW has anyone taken a look at the photo that Bethany has kindly posted on this thread
http://www.essentialdayspa.com/forum/viewtopic.php?tid=37085&start=0 Second from last post.
What she has done here is a proper 'medical' roll. I have to add, that Bethany is the EDS 'expert' on rolling and I'm hugely interested in her views on how often she has rolled.

free skin care · Wed Mar 10, 2010 5:55 am

My 0.5mm MT roller bought from Owndoc always felt as though one/some needles were longer than others. I mentioned this to Sarah from Owndoc and she immediately sent a replacement. She checked with the supplier who said that I should not feel the needles to be irregular.
However the new replacement 0.5mm roller felt the same. I studied the roller and saw that the plastic barrel undulates making some needles longer than the others. This is also the case for my other 0.5mm and 0.2mm (bought from Jaysun Trading). Looking sideways on, all three rollers do not have their needles correctly centred. I measured a 0.5mm roller and some needles were closer to 0.9mm and others 0.2mm.
Also one needle was bent to 90 degrees, another lesser so.

I have relayed all this info to Sarah and she has been very helpful in trying to work out if I have been particularly unlucky or if there is a general problem. In fairness to Owndoc, I asked her to write a statement for me to post.

Here is the Owndoc statement:

Quote:

We have received one complaint about a dermaroller we sent to a customer, model "MT roller".
We take such complaints extremely seriously because it is not just our reputation at stake but also our customers' skin.
We can't inspect dermarollers before we send them because they are in non-transparent sterile packaging.

We randomly selected three dermarollers with long needles but none of them had any damage or bent needles or any other production quality issues.
However this does not mean that quality issue's don't exist, so we advise our customers to inspect their rollers before use and especially look for bent needles, needles that are different in length etc. When a needle is half-bent in the direction of rolling, it can potentially cause a small skin injury. This is why visual inspection before rolling is important.

Anyone who finds such a roller in their order will believed on their word and be immediately sent two replacement rollers free of charge.

We have taken this issue up with the manufacturer, and the manufacturer says they haven't received any such complaints.
Again, this does not mean that quality issues do or did not exist.

The manufacturer has been informed that if any such quality complaint reoccurs, that we will stop buying from them.
We have spoken twice on the phone with them on March 10, 2010 and they assured us they had no quality issues and that "our" rollers would be subjected to their customary quality control.

We have decided to sell their roller based on us testing various rollers, their roller being considered identical in quality, but much cheaper than the "Dr. Roller" dermaroller, both being SE Asian replica's of the not-for-private-sale "Original Dermaroller".

If we receive more similar complaints we will consider suspending all sales. Meanwhile, we are in the process of ordering more rollers from the latest manufacturers, so that we can decide on switching manufacturer.

If anyone else has received or will receive a skin roller with bent or uneven needles from us, please notify us and we will apologize and send replacements immediately.

Also, we have no problem if people post here their good/bad experiences with our dermarollers Smile

Thank you,
Sarah and John

Of course I felt obliged to post about the potential problem. Everyone should check their MT rollers for bent needles or uneven needle lengths (due to uneven plastic barrel). Look both along the roller and the side of it. Rollers from both Owndoc and Jaysun need to be checked as they are from the same manufacturer.

free skin care · Wed Mar 10, 2010 8:42 am

jezebel17 wrote:

My roller came in the plastic coffin which was inside of a sealed plastic bag, which was then put into the small roller box.All of this was put into a thin cardboard mailing box.Hope that makes sense.

Thanks jezebel17, strange... mine was totally unsealed.

This is Miranda wrote:

Quote:

I am wondering if they would be ok to use to try and get rid of some of my Milia

Kay, I did use my needle to 'puncture' a sort of tiny, lumpy, fluid thing on my cheek (group of three) and one above my lip. They didn't go away but are much less noticeable. It could work on your milia; if you're going to do it why not just try one and see how it goes. But TBH I'd be too nervous about doing that myself and would visit a specialist.

I might just try the one, if I am brave enough. That area is sooooooooo sensitive... but like you say it would be better to visit a specialist. They don't bother me too much, but do seem to be getting worse.

This is Miranda wrote:

Quote:

The Derma Roller I received from owndoc wasn't sealed

Kay, none of my MTS rollers came sealed either (two from Owndoc, one from Jaysun). They came in the clear 'coffin' with some wrapping just on the barrel part. I sterlized them all before use as I wasn't sure just how sterile there were.

That's strange, because jezebel17 said hers was sealed, it also says something about it on the owndoc forum, and in your owndoc statement quote...
You say yours wasn't sealed but did have some wrapping on the barrel part, mine had nothing. I just found it a bit odd.

This is Miranda wrote:

My 0.5mm MT roller bought from Owndoc always felt as though one/some needles were longer than others. I mentioned this to Sarah from Owndoc and she immediately sent a replacement. She checked with the supplier who said that I should not feel the needles to be irregular.
However the new replacement 0.5mm roller felt the same. I studied the roller and saw that the plastic barrel undulates making some needles longer than the others. This is also the case for my other 0.5mm and 0.2mm (bought from Jaysun Trading). Looking sideways on, all three rollers do not have their needles correctly centred. I measured a 0.5mm roller and some needles were closer to 0.9mm and others 0.2mm.
Also one needle was bent to 90 degrees, another lesser so.

I have relayed all this info to Sarah and she has been very helpful in trying to work out if I have been particularly unlucky or if there is a general problem. In fairness to Owndoc, I asked her to write a statement for me to post.

Here is the Owndoc statement:

Quote:

We have received one complaint about a dermaroller we sent to a customer, model "MT roller".
We take such complaints extremely seriously because it is not just our reputation at stake but also our customers' skin.
We can't inspect dermarollers before we send them because they are in non-transparent sterile packaging.

We randomly selected three dermarollers with long needles but none of them had any damage or bent needles or any other production quality issues.
However this does not mean that quality issue's don't exist, so we advise our customers to inspect their rollers before use and especially look for bent needles, needles that are different in length etc. When a needle is half-bent in the direction of rolling, it can potentially cause a small skin injury. This is why visual inspection before rolling is important.

Anyone who finds such a roller in their order will believed on their word and be immediately sent two replacement rollers free of charge.

We have taken this issue up with the manufacturer, and the manufacturer says they haven't received any such complaints.
Again, this does not mean that quality issues do or did not exist.

The manufacturer has been informed that if any such quality complaint reoccurs, that we will stop buying from them.
We have spoken twice on the phone with them on March 10, 2010 and they assured us they had no quality issues and that "our" rollers would be subjected to their customary quality control.

We have decided to sell their roller based on us testing various rollers, their roller being considered identical in quality, but much cheaper than the "Dr. Roller" dermaroller, both being SE Asian replica's of the not-for-private-sale "Original Dermaroller".

If we receive more similar complaints we will consider suspending all sales. Meanwhile, we are in the process of ordering more rollers from the latest manufacturers, so that we can decide on switching manufacturer.

If anyone else has received or will receive a skin roller with bent or uneven needles from us, please notify us and we will apologize and send replacements immediately.

Also, we have no problem if people post here their good/bad experiences with our dermarollers Smile

Thank you,
Sarah and John

Of course I felt obliged to post about the potential problem. Everyone should check their MT rollers for bent needles or uneven needle lengths (due to uneven plastic barrel). Look both along the roller and the side of it. Rollers from both Owndoc and Jaysun need to be checked as they are from the same manufacturer.

Thank you for posting this Miranda, my roller needles look to be different lengths too... I tried to measure some and some were looking closer to 1.8-1.9mm, some shorter. I did mention a couple of posts ago that it looked like the needles on the owndoc roller looked longer than 1.5mm...

I have had a close inspection (made me go slightly dizzy!) and some of the needles on the owndoc roller seem to be sloping to the side, so they aren't all straight.
Personally, I think I might not use this roller and stick with my Dr.rollers instead. I only really bought the kit to get my hands on the single needles anyway, but it would have been handy having a spare roller too.

Also on my owndoc roller, the head (where the needles are, the barrel) moves around, it moves from side to side and and up and down (feels loose), my Dr.roller is completely sterdy, no movement of the barrel apart from the actual 'rolling' action.

Quote:

We can't inspect dermarollers before we send them because they are in non-transparent sterile packaging.

I might send owndoc an email mentioning mine wasn't sealed, just to let them know. If I do decide I wont use it I am not too worried.

Wed Mar 10, 2010 9:01 am

I thought owndoc roller is a good choice that's why i ordered it but now i am reading disappointing comments on it !

I hope mine wont be defective Pray

because i can not afford getting another one any time soon

free skin care · Wed Mar 10, 2010 9:16 am

a_b_vafa wrote:

I thought owndoc roller is a good choice that's why i ordered it but now i am reading disappointing comments on it !

I hope mine wont be defective Pray

because i can not afford getting another one any time soon

Yes it's bad news isn't it especially as you have to wait such a long time for delivery. But you won't lose out financially as they'll either refund you or send two new ones.

free skin care · Wed Mar 10, 2010 10:25 am

a_b_vafa wrote:

I thought owndoc roller is a good choice that's why i ordered it but now i am reading disappointing comments on it !

I hope mine wont be defective Pray

because i can not afford getting another one any time soon

I'm not sure how long delivery will take to where you live, but once you receive the roller just give it a thorough check and like This Is Miranda said, you wont lose out because they offer a replacement of two rollers if something is wrong.

I think most people don't even think to check out their new rollers, I didn't really... not until reading the posts here. Maybe even people new to rollers don't worry about theirs being sealed, the only reason I brought it up was because my rollers bought from dr-roller.eu were sealed, if they hadn't have been, because I was new to rollers back then, I wouldn't have thought much of it. I can sterilize the roller myself, that isn't a problem.

Owndoc seem to be very helpful, they answer emails and any questions you have, so the customer service is good. And also the fact they are looking into it with their current manufacturer etc.

I think it would be a good idea if owndoc could perhaps sell the single needles alone as well as in the roller kit. I'm not sure how long they last (I'll check out the website) but when someone needs to replace theirs, it would be good to be able to purchase them on their own too.

I am currently waiting for my body brush to arrive in the post! so I can start dry brushing then rolling/needling.

Wed Mar 10, 2010 11:09 am

According to the order update which i've received from owndoc delivery time will be quite long something like 2 weeks ,

I hope there won't be any problem with my rollers so that i won't need to wait for replacement because waiting for stretch mark solution is more harder than losing money,

By the way , Girls ,please do not laugh at me , but i thought it is also possible to dry brush the skin with a soft to medium toothbrush Very Happy

Wed Mar 10, 2010 11:38 am

hi everyone
I posted a few weeks ago,got no response but decided to go ahead anyway since I haven't stopped reading all this great info you provide.many thanks
so,I have ordered(and received)my 0.25(MT) and 1.00(clinical resolution) from jaysun both sealed in plastic bags and my 1.5(MT)from owndoc which was also in plastic bag,partly sealed,probably opened during transportation IMO.it is true,sarah is very helpful and has answered all of my queries.
I have used none so far,I have to catch up with dry brushing+was not sure about disinfection+now I have to check the needles.i did check sarah's,seems ok,tried it on the area above my wrist(the inside)and it left my skin hot and red and I can even see some of the holes.Is this normal?
about sterilization I decided on povidone iodine(betadine).it is widely used by surgeons so I guess it is strong enough.I'll use it to soak my roller in and on my skin before and after rolling.do you think it will be bad for the needles?
I will be back to discuss with you things that will help with collagen production besides rolling

free skin care · Wed Mar 10, 2010 12:41 pm

a_b_vafa wrote:

By the way , Girls ,please do not laugh at me , but i thought it is also possible to dry brush the skin with a soft to medium toothbrush Very Happy

You must be very slim Laughing

I find a firm bristle better for the body - no half way house, I want a good buffing if I'm going to bother doing it.

free skin care · Wed Mar 10, 2010 12:53 pm

KALLISTO wrote:

about sterilization I decided on povidone iodine(betadine).it is widely used by surgeons so I guess it is strong enough.I'll use it to soak my roller in and on my skin before and after rolling.

Hi Kallisto, I can't answer if it's ok for the needles, you may have to google if it's ok with metal but do you really want to roll the iodine into your body? Because that's what you'll be doing - shallow and deep product penetration rolling with iodine as your product.
Just sterlise your roller, you don't have to sterlise your body as well. I cleanse my face well beforehand, I usually have a shower before rolling my body.
With the wrist test, your skin usually feels (and often looks) sunburnt after. With the longer needles you should have a few blood spots, just make sure you weren't left with needle indentation marks, this would mean the needles didn't enter into your skin and may be blunt.
Let us know how it goes with your first roll! Which one are you going to use first?
Apologies if you're a man but if your a woman still having menstrual cycles, I can strongly suggest rolling soon after your period and not when ovulating!

Wed Mar 10, 2010 1:32 pm

hi miranda
you are right about not using iodine before rolling.as for after rolling,i am thinking of
applying some on the skin,leave it on for a minute or two and then take a shower.what do you think?I may have to check with a doctor as well since i have hypothyroidism

i plan to start with the 1.00 to get the hang of it and if i tolerate the pain(will only use ice packs)and my skin heals ok my next one will be with the 1.5

I am a woman in my mid-thirties and,yes,I agree with your comment on the best time for rolling.In fact,as I have read,day 6 to about day 14 of a regular menstrual cycle,we women are at our best.I also wouldn't consider rolling a few days before my period because of the horrible water retention,even massaging can be a nightmare for me.

by the way,do you or anyone else know of a reputable ebay or other UK-european based seller to buy organic,cold pressed rosehip oil that is not overly expensive?I would welcome any suggestions especially those from experience

free skin care · Thu Mar 11, 2010 5:31 am

Hi, I haven't posted for a long time because I was too busy using a single needle on my sooo many stretch marks. Here is the update:

All stetchmarks are still there, none disappeared. Some of them became less indented but I have noticed it only after about 5 months of pricking. The biggest change is the color. My stretch marks were more than 10 y. old, I got them in puberty (I haven't been pregnant yet) and they had a shiny silvery color. After single needling, the shininess is gone and it became an opaque light beige, which is much less visible. I also noticed very small parts of healthy skin within the stretch marks. Looks like little islands of normal looking skin inside the stretch marks. They are so small that it doesn't make a big difference but I have those "islands" in many of my stretch marks now and I didn't have it before.

All in all I am really happy with my results. My marks are still there and still visible but they are less visible and that means a lot to me.I am not looking forward to summer because I am aware of them and my skin is far from flawless but I am not so terrified to get my clothes off as I used to.

I have 2 rollers and single needles from owndoc and I have been rolling for several months. I inspected the rollers yesterday with a magnifying glass and they look still OK.

When I read the article about copper peptides that someone posted the link here I had to laugh because I thought if our urine and saliva contains copper peptides why don't we just pee on our stretch marks? Smile

"Its high affinity for copper(II) allows it to obtain copper from carrier
molecules such as albumin and form GHK-Cu. The complex is a normal
constituent of human plasma, saliva, and urine."

Thu Mar 11, 2010 10:58 am

Marta!
I'm so happy to hear that you've had an improvement in the color of your stretch marks.
The silver shine is what I'm most self conscious about and want to get rid of.

I find that my friends don't even notice my stretch marks unless I show them under a certain light and the shine appears. So I bet yours are now a lot less noticeable than you think!

And you still have over 2 months until summer arrives, so keep working at them! Especially if you said that you are seeing "islands" of healthy skin appear within the stretch marks.
I'm wishing you luck!

Thu Mar 11, 2010 11:06 am

Is anyone elses' stretch marks raised? Mine are old and white, but raised...Since the dermaroller helps to raise them up, does this mean it would be ineffective for mine? Could it still make the ones that I have less noticeable?

Thu Mar 11, 2010 11:17 am

I'm a 21 year old girl. Yesterday I rolled for the first time with my 1.0 Dr. Roller. I rolled on my thighs, buttocks, and hips. Today my hips are red especially the actual stretch marks. Is this normal? I assume it is just part of the process and the redness will go away soon.

I recieved only a vitamin cream with my dermaroller. Should I be using something else?

I'm very interested in your story CassieZ. I haven't heard about single needling. I'm really want to improve the marks on my hips and thighs. Do you have any advice for someone who has one treatment behind them? Thanks so much.

A. Law

Thu Mar 11, 2010 11:17 am

I think yours may feel raised. But if you really press your fingers along them, you may find that there are actually little "valleys" where your stretch marks are. Mine appear raised because the skin where the stretch marks are is puckered, but really there are indentations where my stretch marks are.

Ot you're may actually be raised. But the dermaroller is supposed to work on other types of scars too, as long as they aren't keloid scars.

Hope this helps...

free skin care · Thu Mar 11, 2010 11:59 am

Alisha-Monroe wrote:

Is anyone elses' stretch marks raised? Mine are old and white, but raised...Since the dermaroller helps to raise them up, does this mean it would be ineffective for mine? Could it still make the ones that I have less noticeable?

My understanding of a stretch mark is part of the skin where the dermis has torn and is damaged and has collapsed giving an indentation look. My SM's like PP's, also have ridges where threads of the dermis remain intact. If yours are raised, you may have a problem with the way your skin scars (ie keloids). Before rolling or needling any raised scar, you must do a test patch first. And wait. If your skin reacts to damage by raising, you don't want to be inflicting hundreds of needles onto the scar causing it to raise further.
Sorry this isn't a very hi-tech answer, I'm no skin expert but my thoughts are what I've picked up along the way. I could be way-off (if anyone knows better, please chip in) but I think it's very important that you do a test patch and wait a couple of months to see what happens.

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