What about higher concentrations of AHAs?

Removing the outer layer of skin can be taken too far. But that’s not because of any danger to the skin, it’s just that too much skin irritation can cause its own problems. Higher concentrations (above 10%) of AHAs may be too much for skin and the FDA agrees with this assessment (Source: www. fda. gov). Without more evidence showing a benefit from higher concentrations, I feel that you can achieve great results without any unwanted side effects when you stick with AHA products containing no more than 10% AHAs, or BHA products with no more than 2% salicylic acid. Further, the positive results women and men perceive with higher concentrations of AHAs may come from the swelling and edema these products cause. That may diminish the appearance of wrinkles and make the skin feel smoother, but it is most likely not best for the long-term health of the skin due to the increased amount of constant irritation.