Préparation U.V. is rich in natural and plant-based active ingredients, stimulates natural tanning and prepares skin for exposure to sun. It thus boosts melanin synthesis without exposure to ultraviolet. It helps prevent the appearance of pigmented spots and slows skin aging, by stimulating proteasome activity and reducing the rate of protein oxidation. Its anti-radical function also fights free radicals. This treatment is recommended for all Skin Instants that will be exposed to strong UV and infrared rays.