Can I combine different skin care products for maximum benefit?
Retinol, specifically, should only be used by itself. Alpha-hydroxy acid or beta-hydroxy acid should not be combined, even if applied at different times of the day. Some skin care manufacturers will recommend using another product from the same product line like a cleanser or moisturizer. Your dermatologist or skin care practitioner will know best what dry or sensitive skin care products can be used together and how frequently they should be applied.