The Pure Retinol Night Serum from L'Oréal Paris is a powerful solution to visibly correct signs of aging, even the deepest wrinkles. So powerful that wrinkles are reduced for 100% of women. Immediately: The skin is rehydrated, supple and appears smoother. In 1 month: The skin is firmer. It appears younger, more radiant. In 4 months: Deep wrinkles are visibly reduced. Precautions: carefully read the instructions on the packaging. In case of redness, tingling or dryness, stop using the product for a few days and resume use by adjusting the frequency to your skin.