70% might be best
I am a 51 year old male and have always taken good care of my skin. I never did a peel before and wanted to try this product.  So, here is the truth about my results. After following the downloaded directions on how to prepare the skin and apply the product, I will say I barely felt a tingle after 10 minutes of use. I have used this product 6 times. No results. My advise is to buy the 70% and try a sample on your arm. You can dilute if you need to, but 20% stronger than what I used doesn't seem too strong. It might be just right.
Rating: 1 stars