How long should I leave the peel on for? 04 September 2024 15:26 Updated The peel should be left on for 2 to 5 minutes, extending this by one minute each day (up to a maximum of 5 minutes). Related articles I have dark spots on my face, which should I choose, Acido Tranexamico or Wonder Roll serum? How much peel should I put in the jar?