As if my list of cosmetic ingredients to avoid to prevent cosmetic acne wasn’t long enough already, I have a few more ingredients to add to the list - cornstarch (also called Zea Mays or corn starch) and rice starch. According to Cosmetic Cop Paula Begoun, some food-derived cosmetic ingredients should be avoid if you are prone to acne. Currently the only ingredients I know to avoid are corn starch and rice starch, but if I come up with others, I will add them to this post. If you are not prone to acne, then there’s no need to worry about these ingredients.

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.” 

L’Oreal True Match Powder
Originally this post was going to be about this foundation, and how I really like it, and how it hasn’t caused me any breakouts. All of that is true, however its second ingredient after talc is corn starch. To be on the safe side, I wouldn’t recommend using a cosmetic with corn starch as one of its main ingredients if you are acne prone. Personally I will probably still buy this product because it goes on smoothly, has a nice finish to it, it comes in a lot of shades, and I have not had an issue with it. I never would have bought it if I remembered at the time to avoid cornstarch, so it’s only by accident that I’m using it.

Neutrogena Healthy Skin Pressed Powder
This is the pressed powder I usually use, and I think it is totally safe if you are prone to acne. It only comes in three light shades, so the color choice is pretty limiting. I started using the L’Oreal True Match, because now that summer is here, I wanted a slightly darker shade to go better with my fake tan. Currently, the Neutrogena Healthy Skin Pressed Powder is the only powder I’ve tested that looks good, and that does not have aggravating acne ingredients!