Cos De BAHA Retinol 2.5% Serum comes in a handy 30 ml bottle that fits right into your nightly skincare routine​. It uses a powerful 2.5% pure retinol formula to help your skin renew itself and make fine lines look softer over time​. You’ll also find vitamin E for protection and hyaluronic acid to keep your skin feeling plump and hydrated all night long​. Natural hero ingredients like niacinamide, aloe, rose, lavender, and green tea work together to even out your skin tone and calm any redness​. This serum is proudly made in South Korea under strict KFDA standards and is free from parabens, sulfates, artificial colors, and fragrances​. Just apply one or two drops to clean skin at night, starting a few times a week so your skin can get used to it​. Many users say their skin feels smoother and looks more youthful after only a few weeks of regular use​. The dropper bottle makes it easy to use the perfect amount every time without any mess​. Cos De BAHA tests all its products carefully to make sure they are safe and gentle for every skin type​.