La Roche-Posay Retinol Face Serum with Vitamin B3 Two of skin care's hero ingredients — retinol and niacinamide — all mixed into one? You'll find it with the La Roche-Posay Retinol Face Serum with Vitamin B3 (£38). Image Source: laroche-posay.co.uk La Roche-Posay Retinol Face Serum with Vitamin B3 £38 from laroche-posay.co.uk Buy Now