Retinol is a form of vitamin A that is found in animal-derived foods such as liver, egg yolks, and dairy products. It is also available in synthetic form as a dietary supplement and is sometimes added to protein powders and other supplements.
Retinol is important for various physiological processes in the body, including vision, immune function, and skin health. It is also a potent antioxidant that can help to protect the body from damage caused by free radicals.
In skin care products, retinol is commonly used for its potential anti-aging effects. It is believed to stimulate collagen production and improve skin texture and tone.
Retinol is generally considered safe when used in recommended amounts.