There is 20% lactic in the P-Peel 20% , could this create a reaction in a Fitzpatrick 5 and 6 ?

A: The formula is well balanced, as long as you follow the protocols guidelines, there will be no reaction. In any case, if there were to be a strong reaction – immediately neutralize the peel and rinse the skin with water, then let it calm down. Apply AcNo Complex Ampoule followed by SOS. Skin will heal with no problems.