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Thu Dec 11, 2008 1:10 am  |
I once heard that L-Ascorbic Acid (Vit C?) will become inactive once it's exposed to light and air. I just purchased the CellularSkinRx Vit C serum. It comes in a 30ml tinted glass bottle and I find it a bit hard to travel with it. I was thinking of transferring the serum to a smaller tinted drop bottle. I'm wondering if the serum will be affected during the transfer process? Or will it still remain fresh?  Thanks! |
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Thu Dec 11, 2008 2:48 am |
| Vitamin C does oxidise over time - usually indicated by it turning a yellowish colour. However, it's not going to instantly happen by you transferring it from one container to another. However, a 30ml bottle is the standard size for Vitamin C serums and I have never had any trouble with it going off and surely it's not that much trouble to travel with is it? Just remember that if you pour half of it into a smaller bottle - the remaining serum will then be in a half empty bottle filled with air and more prone to oxidisation. So it would make more sense to put it into two 15ml tinted bottles. |
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Thu Dec 11, 2008 1:00 pm |
Keliu, you're right. I guess it's too much hassle to transfer it back and forth. But if it oxidize with the air in the 1/2 empty container, what about if I used it 1/2 way then?
I accidentally spilled some out this morning when I was using it. I forgot to close it tight after using and my hand accidentally knocked it over. That's enough for 2wks supply I guess  oh well...
A bit off topic...but what about other serums then? The non Vit C serum. Would it be oxidize if it's exposed to air and light? Thanks! |
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Thu Dec 11, 2008 6:51 pm |
| Stardustdy wrote: |
| A bit off topic...but what about other serums then? The non Vit C serum. Would it be oxidize if it's exposed to air and light? Thanks! |
That would depend on what ingredients were in the serum. However, many serums include ingredients that act as a stabilizer. Vitamin C just happens to be notoriously unstable. But as a rule of thumb, it's always best to keep any serums away from the light and air tight. |
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Thu Dec 11, 2008 9:37 pm |
| it's always best to keep any serums away from the light and air tight.i think so |
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Thu Dec 11, 2008 11:19 pm |
| The CellularSkinRx Vit C serum is described by the company as "stable." However the only ingredients listed are L-ascorbic acid and Butylene Glycol. I do not know if the company is required or not to list any other ingredients that may make this product "stablilized" or if they are just marketing it as stable. Many have said that this product does not turn yellow orange or brown for a long time (like 6 months) which is considered good and is rare in a serum. However I am surprised that there are only 2 ingredients, and that this would be enough to stabilize vitamin C, which is notoriously unstable. Any chemists who can explain this? |
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Thu Dec 11, 2008 11:59 pm |
| I think they should have other ingredients too I believe. But probably they're not listed like what you said amonavis. Perhpas we should contact the company to find out? |
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Fri Dec 12, 2008 8:36 am |
No other ingredients in the Cellularskin-rx serum. The butylene glycol itself is what makes the serum stable--it's when l-ascorbic acid is mixed in water than the stability problems arise. So, by using butylene glycol rather than a water based solvent for the Vitamin C, a far more stable product is created.
And, as for tranferring a bit to a smaller bottle--that's what I do when I'm traveling. I use a Vivier C sample bottle that holds about 2 weeks worth of Vitamin C. I realize that the original Cellularskin-rx bottle isn't all that big, but I do carry-on only travel, and I need all the space I can get in my 1 quart liquids-and-gels bag for all my skincare and makeup goodies!! |
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Fri Dec 12, 2008 10:21 am |
Hi Flitcraft, do u by any chance know the size of your sample bottle? I want to know approximately how big the bottle should be to hold 2wks of supply! Would 5ml be too small? Thanks!  |
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Fri Dec 12, 2008 11:30 am |
| I always store C serums in the fridge and they last much longer this way. I transfer only about a weeks worth into another dropper bottle that I keep with my skin care. |
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Fri Dec 12, 2008 7:01 pm |
| flitcraft wrote: |
| No other ingredients in the Cellularskin-rx serum. The butylene glycol itself is what makes the serum stable--it's when l-ascorbic acid is mixed in water than the stability problems arise. So, by using butylene glycol rather than a water based solvent for the Vitamin C, a far more stable product is created. |
Butylene Glycol is a solvent. Found this at:
http://www.healthy-communications.com/butylene.htm
However, in the small doses used as a solvent in pharmaceuticals and nutritionals, there are no known side effects. In water-based products, a concentration of 0.5% butylene glycol, as a solvent, would be safe for topical use.
If Cellularskin-rx is just Vitamin C and Butylene Glycol then the serum would have to contain about 85% of BG. That couldn't be so surely? |
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Sat Dec 13, 2008 3:45 pm |
| Keliu wrote: |
| flitcraft wrote: |
| No other ingredients in the Cellularskin-rx serum. |
In water-based products, a concentration of 0.5% butylene glycol, as a solvent, would be safe for topical use.[/i]
If Cellularskin-rx is just Vitamin C and Butylene Glycol then the serum would have to contain about 85% of BG. That couldn't be so surely? |
Yikes! You raise a good question, Keliu.
I have been using the Ice-CE Booster from Ice Elements for several months now. They found a way to encapsulate the l-ascorbic in jojoba esters for stability. The balls are suspended in a jojoba/Vit. E serum and break open when you apply it to your skin. Supposedly, it is only then that the l-ascorbic is activated. Does that sound reasonable? It is so hard to know since Vit.C's benefits are seen long term. My skin LOVES the jojoba esters, that's for sure!! |
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Sat Dec 13, 2008 4:34 pm |
| brenpatsa wrote: |
| I have been using the Ice-CE Booster from Ice Elements for several months now. They found a way to encapsulate the l-ascorbic in jojoba esters for stability. The balls are suspended in a jojoba/Vit. E serum and break open when you apply it to your skin. Supposedly, it is only then that the l-ascorbic is activated. Does that sound reasonable? It is so hard to know since Vit.C's benefits are seen long term. My skin LOVES the jojoba esters, that's for sure!! |
I had a look at it, it sounds very interesting. However, I couldn't find the percentage of Vitamin C it contains. Also, if the Vitamin C is encapsulated in the little balls, how do you know how much Vitamin C is being applied each time? However, this is probably irrelevant to it's overall efficacy.
Has anyone thought of using oil soluble Vitamin C. You can buy it from BulkActives and add it to any facial oil - I add it to Pomegranate Oil. Oil soluble Vitamin C is supposed to be extremely stable. |
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Sat Dec 13, 2008 10:01 pm |
i use bio oil and sprinkle some l'sorbic acid into it and use that all over my body face included
i keep my vit c in the fridge along with all my other actives |
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Sat Dec 13, 2008 10:08 pm |
hhm this is confusing..... But if the CellularSkinRx Vit C serum is not stable, why does so~ many ppl used it with good results?
Or it's stable cuz they have other ingredients in it too and not just the butylene glycol? |
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Sat Dec 13, 2008 10:35 pm |
The mini-dropper I use for traveling is an old sample bottle of Vivier Kinetin C and it is 7.5 ml. That is enough for 2 weeks for me.
I have had terrific results with the Cellularskin-rx serum--no question it is highly stable. |
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Sun Feb 08, 2009 8:53 pm |
| Yes Vitamin C has been known to oxidize when exposed to oxygen so keep the lid closed right after you squeeze some of the product out! |
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Sun Feb 22, 2009 12:27 pm |
| yes always be aware of vitamin C products. esp the expiry dates, because they degrade and oxidise faster, and thus, lose their effectiveness! |
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Thu Feb 26, 2009 11:34 am |
| is skinceuticals C&E ferulic stable? |
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Thu Feb 26, 2009 12:12 pm |
| yeah i wanted to ask that! i just won a bid on 5mlx10 =50ml of Ferulic CE for 29 euros! and im wondering if its a good deal or if it has oxidized!! |
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Thu Feb 26, 2009 1:33 pm |
| Skinceuticals CE Ferulic is stable but it has to be fresh. If it is not fresh, the color will be dark yellow or brown and it is ineffective at that point. The problem with the samples is they are not sealed and I don't believe there is a date on them, so who knows how old they are. That is the problem with ebay. I think CE Ferulic is a great product but it needs to be fresh or its a waste of money. |
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Thu Feb 26, 2009 1:50 pm |
| Ok, i will check the samples. What color is it naturally or when it's fresh? |
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Thu Feb 26, 2009 2:05 pm |
| calorblind wrote: |
| Ok, i will check the samples. What color is it naturally or when it's fresh? |
when CE ferulic is fresh, it should not have any color.
I bought once CE Ferulic sample pack from Ebay, samples were clean and I was using them for 2 or 3 months, and they were still clean, may be with some "champagne" tint. |
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31, combo - oily, breakout-prone, fair complexion, sensitive and prone to rosacea |
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Thu Feb 26, 2009 2:10 pm |
| Aiva wrote: |
| calorblind wrote: |
| Ok, i will check the samples. What color is it naturally or when it's fresh? |
when CE ferulic is fresh, it should not have any color.
I bought once CE Ferulic sample pack from Ebay, samples were clean and I was using them for 2 or 3 months, and they were still clean, may be with some "champagne" tint. |
Actually I think fresh CE Ferulic has a slight, light yellow tint to it. It isn't clear like the B5 serum. |
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Thu Feb 26, 2009 2:11 pm |
| It is impossible to fully prevent some oxidation but personally I would only use it until it is light yellow. If its dark yellow or brown, id throw it out. |
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| Thu Apr 18, 2024 4:40 pm |
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