Retinol Night Serum: Vince Retinol Night Serum is a powerful age-defying 0.2% retinol-infused serum that gently helps fight against signs of aging, deep wrinkles, fine lines, crowâ??s feet wrinkles, sun damage, and discolorations. This anti-aging retinol serum also helps to tighten loose skin by lifting effects, improves skin texture, increases skin cell turnover, stimulates collagen synthesis, and promotes a renewed, even-toned, younger-looking appearance. Key Benefits: Prevents signs of aging. Helps to stimulate new cell formation. Reduces the look of deep wrinkles. Helps to increase collagen production. Improves skinâ??s texture & skin tone. Makes skin youthful, glowing, & luminous. Non-greasy texture. How To Use: At the start of using this serum, use 2-3 times a week, as your skin needs to get familiar with the retinol. After that, build up a daily use. Use only in the night time, apply 4-5 drops directly over freshly cleansed face & neck. Cautions: Store in a cool and dry place. Avoid direct sunlight. For this product, a patch test is advised. A tiny amount of the product should be applied to a clean area of the upper forearm. If irritation occurs rinse off immediately, otherwise rinse after 24 hours. Do not use the product if you notice any redness, blistering, itching, burning, or irritation at any point during the test.