The proof: A study in the American Journal of Clinical Dermatology reported that testers who used retinol creams for 6 months saw an improvement in skin firmness — from 11 to 15 percent on average. (health.com)
A concentrated pure retinol cream for face diminishes the appearance of multiple signs of aging simultaneously (skinceuticals.com)
Sweet Potatoes are high in vitamin A, which is the same nutrient used in those pricey anti-aging retinol creams. (beginwithinnutrition.com)