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In the most basic terms, retinol is the whole vitamin A molecule, which is one of the best vitamins for your skin. Vitamin A is a potent antioxidant, and works to protect your skin from free radicals, generates cell growth, and repairs damaged cells.
Avoiding Retinol Serum Side Effects. Negative retinol serum side effects can usually be avoided by using the products properly. Retinol is one of the best anti aging active ingredients on the market today. It reduces wrinkles, fine lines, hyperpigmentation like age spots, and can even diminish acne scars. Most retinol serum side effects are mild and temporary. Normal side effects for proper use of retinol include dry skin, peeling, and sensitivity to other forms of exfoliation. Redness, irritation, inflammation, and raised patches are a sign that you are using too strong of a concentration.