E Code : E160b Annatto is derived from seeds of plant named Bixa orellana which is a tropical tree. Bixin is fat soluble while norbixin is water soluble. Both pigments in carotenoid class are sensitive to light and oxygen. Therefore, in some cases, sensitive products can be protected with the help of ascorbic acid Because it is a natural colorant, annatto is highly preferred in medicine sector (in tablets) and cosmetic sector (in hair and skin care products, blushers and crèmes) as well as food sector.