Remember, retinol needs to be used hand in hand with sunscreen for optimal results. Even if you just put on retinol the night before, always use SPF 30 or higher in the morning. Retinol makes skin more sensitive to light, so if you’re not using sunscreen in the AM, you may negate your skin’s progress. We love the Dr. Loretta Urban Antioxidant Sunscreen SPF 40, which provides truly full-spectrum protection — from UV rays and HEV blue light to pollution and irritants.