Glycolic acid is my favorite ingredient, but for it to work effectively on the skin, you need to know when to use it and when not to use it; if you haven’t used glycolic acid for an extended period of time, it’s like starting over as if you were using it for the very first time. When in doubt it’s better to start lower than higher.
I have been using Biokorium for years. The pictures of Vivian are untouched & very real. She is living proof of how great her products work. THE BEST!!