Skip to main content
    Back to Glossary
    IngredientsR

    Retinol

    /RET-ih-nahl/

    Definition

    A vitamin A derivative that speeds up skin cell turnover and stimulates collagen production — among the most clinically proven ingredients for fine lines, acne, and uneven skin tone.

    Retinol is the over-the-counter member of the retinoid family — vitamin A derivatives that bind to skin cell receptors and tell them to behave younger: turn over faster, produce more collagen, and shed pigment more evenly. Prescription tretinoin is the strongest form; retinol is the gentler, slower-acting OTC version.

    What to Expect

    • Start low (0.25%) and use 2–3 nights per week, building up
    • Mild flaking, redness, and dryness ('retinization') for the first 2–4 weeks is normal
    • Always pair with daily SPF — retinol makes skin more sun-sensitive
    • Pause 5–7 days before peels, laser, or microneedling

    Related Terms

    Collagen

    The most abundant protein in the body, responsible for skin's firmness, elasticity, and structural integrity. Production declines with age.

    Exfoliation

    The process of removing dead skin cells from the skin's surface, either physically (scrubs, devices) or chemically (acids, enzymes) to reveal fresher skin.

    SkinBetter Science

    A physician-dispensed medical-grade skincare brand known for its patented AlphaRet retinoid formulas, antioxidant serums, and cosmetically elegant SPF.

    AlphaRet

    SkinBetter Science's patented formulation that combines a retinoid with lactic acid (an AHA) to deliver retinol-level anti-aging results with significantly less irritation.

    0
    Next TermRosacea