Can I apply 30% glycolic acid to my armpits as they are a bit dark?

Thanks for your question.  Glycolic acid and retinol are both very different and affect the skin in different ways.  If you are talking about a peel, the depth will depend on the concentration of acid, type of peeling agent, and sometimes the time left on the skin. but you don't want...

Thanks for your question.  It is very possible you gave yourself a burn and are left with some patches of thinner skin, which occasionally show tiny broken blood vessels under the skin more apparently.  You should see a board certified dermatologist for advice and an in-person exam...

Thanks for your question.  Hopefully by now everything is back to normal, and you don't have any scarring.  Sometimes too aggressive peeling of the skin or a scab can result in a scar, but if you use good sun protection and gentle skin treatments, it is less likely that you have...