AHAs
AHA: Alpha Hydroxy Acids, derivatives of fruits or other natural substances.The 5 types of Alpha Hydroxy Acids most often used in the cosmetic industry are:
* Glycolic acid – sugar cane extract
* Lactic acid – milk extract
* Malic acid – apple extract
* Citric acid – lemon extract
* Tartaric acid – grape extract
(www.fr.wikipedia.org)