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Corn Starch bad for skin?

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Stardustdy
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Mon Jun 16, 2008 10:53 pm      Reply with quote
I read somewhere that cornstarch will provide a place for bacteria to grow. So if used on skin, pimples or a rash like reaction will occur. But corn starch is used commonly in finishing powders to control oil which is quite effective. So my question is...anyone here that're currently using a loose powder that contains corn starch in it? If so, does it do anything to your skin?
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Mon Jun 16, 2008 11:29 pm      Reply with quote
When I was on a stipend I used compact and loose powders by Cornsilk - which is mainly just corn starch. It made my oily skin matte very long, and I used it for years until I had my own money to buy 'fancy' stuff. It never broke me out or anything.

The homemade 'primer' I use sometimes now also is just plain old cornstarch, but I don't use it frequently enough to see if it does make my skin react negatively.

Wish I could be more help!

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Tue Jun 17, 2008 12:01 am      Reply with quote
Paula Begoun says cornstarch is a ”Starch obtained from corn and sometimes used as an absorbent in cosmetics instead of talc. However, when cornstarch becomes moist, it can promote fungal and bacterial growth.” About rice starch, she says it’s an ”Absorbent substance sometimes included in products rather than talc. It can cause allergic reactions and, because it is a food derivative (as opposed to a mineral derivative like talc), it can support bacterial growth in pores.”

I believe it's only contraindicated in acne prone people.

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miranets
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Tue Jun 17, 2008 12:18 am      Reply with quote
I know that various starch/flour products can breed bacteria because they absorb moisture and contain nutrients they live on, I would like to think commercial brands treat the starch products with either chemicals/preservatives or irradiation.

I do use a rice/silk powder mixture in the mornings for added oil absorption, I can't find anything better...

I think you can add some silica pouches to help absorb moisture, and make sure you buy it from a reputable seller.
Stardustdy
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Tue Jun 17, 2008 9:33 am      Reply with quote
Kassy A, yeah I think I read that from Paula Begoun too...I kept on recalling where I got that info. So basically cuz it's derived from food so it's easier to breed bacteria when moist.

miranets, I'm not sure if rice powder is the same as rice starch? I think silk powder should be fine...

well, I'm not really like so~ acne prone but I do get the occasional breakouts or clogged pores, I guess I would like to stay away from the "starches" if possible.

Just wondering if Silica is good an oil absorbant as corn starch?
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