A very powerful product, 1 part of Overnight Retinol Repair 1% with 3 parts Buffer Cream to be applied to clean skin before sleep. For sensitive skin, only apply once every 2 days, add more ratio of Overnight Retinol Repair 1% to Buffer Cream as your skin’s sensitivity reduces. This treatment accelerates the renewal of skin cells, therefore it will diminish the appearance of fine lines and uneven skintone. It also strengthens the skin to fight free radicals. This product does not contain fragrances, colours or parabens.