Hello, I want to try AHA GEL50 % I use it myself. It's applied to the skin on the body, the dark part and there are many scars. Can I use this formula? Glycolic Acid (AHA) 100% Powder 50% Pro Polymer 2% Phenoxyethanol ( สารกันเสีย ) 1 % water remaining (47%) battle Please help me look. If you mix it...