The Retinol Serum contains 2% retinol. Retinol is perhaps better known as a Vitamin A. Retinol absorbs quickly into the skin and can bind to our skin cells, renew them and improve the tissue structure, making wrinkles less deep and delaying the development of new wrinkles. It is a powerful and proven ingredient against skin aging and it makes the skin more beautiful, tighter and more even. For example, it also works well against skin discoloration. But retinol also has an anti-inflammatory effect and has a positive effect on acne, eczema, pimples and red bumps on the skin.