AHA means Alpha Hydroxy Acids naturally occurring in food. For instance, citric acid found in citrus food, Macil acid found in grapes. AHA are good PH balancers for the skin, keeping your skin in perfect balance.AHA is a natural exfoliator removing dead layers of skin and giving you a new layer of skin. Hence the sensitivity to the sun, because the new layer of the skin will be delicate and fragile.
We always advise using sun protection and a hat for skin sensitivity protection.