Dr. Ci Labo Aqua Collagen Gel BI-HA-KU is a type of Aqua Collagen Gel specially designed for skin brightening. Based on dermatological research, this gel targets the dulness and dark spots that reduce the clarity of the skin. One of the gel"s effective key ingredients is L-ascorbic acid 2 glucoside, a long acting Vitamin C derivative. This ingredient penetrates deep into the stratum corneum and stays there in stable from for an extended period of time. Because it targets melanin, it demonstrates a great skin brightening effect. DL alpha tocopherol acetate, a long acting Vitamin E derivative, promotes vibrant looking skin. Dipotassium glycyrrhizinate quickly helps soothe the discomfort caused by UV rays and other factors. To help increase the functions of these active skin brightening ingredients, Dr. Ci Labo has employed the "Super Skin Brightening Penetration System". This system combines two aproaches to block skin dulness and dark spots. The "penetrating moisturizing ingredients" supply and lock in moisture, while the "ultra penerating skin brightening care ingredients" have botanical ingredients encapsulaed in nano casules. Our naturally derived gel factor has made it possible for us to develop this revolutionary new skin brightening care. As the "penetrating moisturizing ingredients," 3 diferent kinds of collagens, hyaluronic acid, ceramide and elastin hydrate the stratum corneum hile 20 different amino acids fine-tune the skin"s innate function to maintain moisture. Moreover, the seaweed derived oligogeline coats and seals the surface with a barrier that prevents moisture from being released. The penetrating moisturizing ingredients fill up the stratumcorneum with moisture to work on small bumps and dents that would otherwise appear on the skin surface due to dryness and cast aging shadows. They also bring addd clarity to the skin.