The reason your skin is peeling is due to a combination of the Retinol and AHA being used together. Both ingredients encourage cell turnover so it is more effective to use the Retinol one night and the AHA on another night and alternate them that way.Doing this should then stop the peeling.efore mixing any of your skin care products together you need to know which ingredient combinations will benefit the skin and which can cause problems. Retinol is one of the most temperamental ingredients and doesn’t work well when mixed with other actives.