Olay regenerist retinol24 night serum penetrates deep into the skin's surface layers. This proprietary blend combines vitamin b3 retinoid complex. It hydrates skin for 24 hours and comes with a bounty of benefits. You'll see visible improvements in fine lines and wrinkles, smoothness, brightness, and firming. This fragrance and dye free serum absorbs quickly and goes deep into your skin's surface layers so you wake up every morning to younger looking, radiant skin. Use olay daily for 28 days. See true skin appearance transformation. Retinol 24 is suitable for daily use. Wake up to visibly smoother and glowing skin hydrates your skin for 24 hours with visible improvements in fine lines and wrinkles, smoothness, brightness and firming olay retinol24 combines two of the most powerful skincare ingredients retinoid complex and vitamin b3 designed to deliver anti ageing ingredients up to 10 layers deep into the skin's surface specifically designed for the time when the skin is most receptive designed without any artificial dyes, perfumes and oils. Suitable for daily use to use use retinol 24 night serum in the evening on cleansed skin, before applying a moisturiser. Smooth evenly over your entire face. Ensure to wear spf daily when using this product as the retinoid complex can make your skin more sensitive to sunlight.