La Roche Posay Retinol B3 Serum 30ml is a concentrate with 0.3% retinol and niacinamide (vitamin B3). Its anti-wrinkle and depigmenting effect is due to the synergy between two types of retinol, pure and in the form of retinyl palmitate, with an extended release. It is a light serum, with moisturising properties thanks to glycerin, which provides a silky finish to the skin in addition to treating the signs of aging and hyperpigmentation.