Retinol is a derivative of vitamin A used in skin care to treat various conditions like acne, wrinkles, and scars, functioning as an antioxidant that neutralizes free radicals. It should be combined with sunscreen and follows a four-step skin care routine of cleansing, exfoliating, moisturizing, and applying sunscreen. Geneva Naturals offers natural retinol products focused on anti-aging and improving overall skin health, free from harmful ingredients.