Wikipedia, the free encyclopedia, http://en.wikipedia.org.
注明出自 CosDNA，并提供连结 http://www.cosdna.com 方可引用本资料
Citric acid is widely used as a pH adjusting agent in creams and gels of all kinds.
In this role it is classified in most jurisdictions as a processing aid and so does not need to be listed on ingredient lists.
Citric acid is an alpha hydroxy acid and used as an active ingredient in chemical peels.
Citric Acid is not devide from Citric fruits like lemon.... It is most from corn.