Environ Youth EssentiA C-Quence Serum 4 – An advanced level in the step-up system from Environ, Youth EssentiA C-Quence Serum 4 contains higher concentrations of Vitamin A (Retinyl Palmitate) combined with Vitamin C, Vitamin E, and potent antioxidants to help improve skin elasticity, reduce the appearance of fine lines, and promote a smoother, firmer, and more radiant complexion.