Skin Functional - 1,5% Retinoid ComplexBest Way To Use A high strength advanced retinoid comprising of 4 different retinoids that collectively add up to a concentration of 1. 5%. A multi pronged approach to retinoid therapy allowing for a targeted approach for all the different retinoid receptors in the skin. The ideal product for someone who is looking to increase their retinoid treatment strength. Suitable Skin Types Combination Oily Say Goodbye To Rough Texture Uneven Skin Tone Fine