Our Bio-Retinol + C Booster is an oil-based booster for your skin, designed to improve the appearance of dull and tired skin, and provide the nourishment your skin needs to look radiant. Vitamin C and Bio-Retinol are brought together to supercharge your skin in this nourishing oil-based booster. Our Bio-Retinol + C Booster uses four incredible vitamins (A, C, F and E) blended into a gentle base of Rosehip Oil, allowing this product to penetrate deeper into the skin than typical water based products. Vitamins C and A help to deliver anti-ageing benefits, increase collagen production and hydration whilst boosting radiance and skin luminosity. We’ve also added an extra boost from vitamin E which is rich in antioxidants and healing on the skin and vitamin F to deeply nourish and replenish your skin.Since it's a BIO RETINOL from botanical origin it's not sewnsitizing in the sun, allowing you to use it also in the morning .