Blue Retinol Night Serum is a powerful innovation from Bioscience that offers maximum resurfacing efficacy in a 100% vegan formula. Every night, it targets wrinkles, evens out skin tone and quality to reveal healthy, youthful skin every day. This retinol youth facial serum and skin treatment helps to reduce facial wrinkles, fine lines on the face and even out the skin. New Blue Retinol: Life Plankton + 0.25% Retinol. An association of highly concentrated Retinol with our powerful regenerative active Life Plankton for amplified rejuvenating efficacy and skin renewal. As a result, wrinkles are reduced in 100% of women (2). The quality of the skin improves, with a more even and smooth skin. Day after day, the skin resurfaces and repairs itself Faithful to our Blue Commitments: 100% vegan formula (4) and 92% biodegradable clean formula. Ecological packaging: 25% recycled glass How to use: Apply at night on the face For the first week, use twice a week, then gradually increase frequency to every other night In case of persistent discomfort, space out the applications and/or reduce the amount Always make sure to moisturize your skin well. Apply each night before your moisturizer as part of your nighttime skincare routine. Do not apply around the eyes or on the eyelids. Do not use in association with retinol products outside of the BIOTHERM Blue Pro-Retinol range. Do not intentionally expose your skin to the sun and use a broad-spectrum SPF 30 product daily.