D (Vitamin D) – helps skin cell turnover.
Dextran Sulfate – decongesting properties, minimizes swelling
Diacetyl Boldine – from the Chilean Boldo Tree, prevents tyrosinase activation. In Lumiquin from Revision.
Dihydroxyacetone – (DHA) the key ingredient in most self-tanners and spray tans that temporarily stains the skin to tint it darker. It’s a sugar that reacts with amino groups in the stratum corneum to produce the temporary brown color. (see Erythrulose for more info.) Skinceuticals.
Dimethicone – emollient and skin barrier/protectant. The key ingredient in many moisturizers for skin or hair. Skinceuticals.
DNA Repair – usually refers to a ingredients that are enzymes needed by skin cells to reverse DNA sun damage. In Neova.