Cos De BAHA Azelaic Acid 10% Serum is a powerful, lightweight serum that helps to improve the appearance of uneven skin tone, texture and fine lines. This high-concentration formula contains 10% azelaic acid, a naturally occurring compound that has been shown to help reduce the appearance of dark spots and hyperpigmentation, as well as improve skin texture and tone. Q-depot offer full range of Cos De BAHA products at the best wholesale prices and ship all over the world directly from South Korea. Furthermore, this serum is also infused with nourishing ingredients like hyaluronic acid, which helps to keep skin hydrated and plump, and vitamin C, which helps to brighten the complexion. This 30ml bottle is perfect for those looking for a highly effective, easy-to-use serum to help improve the overall appearance of their skin.