Firms skin and reduces the appearance of deep lines and wrinkles and can be used day or night. The nutrient-rich formula that works to improve skin elasticity and smoothness. The brightening benefits are possible as this serum contains bakuchiol, a natural retinol alternative, along with vitamin C. Though these two products can’t typically be partnered together, it is possible in this formula because bakuchiol doesn’t have the irritation profile of retinol.