Hello, this formula caused by use
glycolic acid at the level of very high concentration Which may be used at a level of not less than 50% and the use must be at an appropriate level, that is, not used too long and not used often Because it may be harmful to users
glycolic acid At a concentration of 50% or more, the pH of the formula is very low. which may be lower than 1, which is contrary to the requirements of the FDA, which has determined that Cosmetics must have a pH of at least 3.5 for general consumer use. and not less than 3.0 in the case of having a doctor as a supervisor