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Active ingredient

Alpha-Arbutin

INCI · Alpha-Arbutin

Alpha-arbutin is a glycosylated hydroquinone derivative used in skincare to fade hyperpigmentation, post-acne marks, and uneven tone. It works by reversibly inhibiting tyrosinase, the rate-limiting enzyme in melanin synthesis, without the cytotoxic risk of free hydroquinone. Pairs well with niacinamide, vitamin C, and tranexamic acid for layered pigment correction.

Last reviewed by BIOSAR Scientific Team, PharmD, Cosmetic Chemistry, Pharmacy practice on .

Pregnancy and breastfeeding

No specific caution is known for cosmetic use during pregnancy or breastfeeding. If you are unsure, ask your doctor or pharmacist.

Cosmetic-grade alpha-arbutin at concentrations up to 2% is considered acceptable during pregnancy and lactation per Mother to Baby and Trivedi et al. (Int J Womens Dermatol 2017). Topical use shows minimal systemic absorption; the parent compound hydroquinone is avoided in pregnancy, but the glycosylated arbutin form does not behave identically.

Mechanism in detail

What Alpha-Arbutin does

Stable tyrosinase inhibitor. Interrupts the enzymatic step that produces excess melanin. Evens tone gradually without photosensitization.

Evidence

What the research says

  • 76%A beta-arbutin plant extract in women with melasma

    A double-blind trial in 102 women tested a cream with a plant extract rich in beta-arbutin, not alpha-arbutin, twice daily for 8 weeks. Skin tone evened in 76% of those with melasma and in 56% of those with sun spots.

    A clinical study in patients, in a medical setting. It is shown for the science of the ingredient, not as an example of cosmetic use.

    Read the study

    J Cosmet Dermatol 2015 (Morag et al.)

Where it helps

Concerns Alpha-Arbutin addresses

  • Dullness

    Dull skin is the visible loss of luminosity, where the surface appears flat, grey, or fatigued instead of light-reflective. The underlying causes are dead-cell accumulation on the stratum corneum, dehydration, microcirculation impairment, and oxidative stress. Effective treatment combines gentle exfoliation (alpha- and beta-hydroxy acids), antioxidant serums (vitamin C, niacinamide), barrier hydration, and consistent broad-spectrum SPF. Visible improvement typically arrives within two to four weeks of a structured routine, matching the natural cell-turnover cycle of healthy skin.

  • Hyperpigmentation

    Across Fitzpatrick III–V skin tones — the majority of darker skin tones — the most common consultation is the same: the patch on the cheekbone that did not fade. Melasma, post-inflammatory hyperpigmentation, the marks that follow acne and friction. The pattern is photoresponsive, the mechanism is mapped, and visible improvement is reachable with consistent care. The Whitepurity range is built for that work — Alpha-Arbutin for stable tyrosinase inhibition, Niacinamide-led brightening, and the SPF discipline that decides whether any of the rest will hold.

  • Sensitivity

    If you have sensitive skin, you have probably been told it is in your head — by a product that says "gentle" on the label, by a friend whose skin tolerates everything yours cannot, sometimes by a professional who could not find a visible cause for the symptoms. It is not in your head. The mechanisms are measurable, the biology is mapped, and the care that follows from understanding them is what the Sensimed range was built around.

  • Sun Damage

    Sun damage is the cumulative photoaging caused by ultraviolet radiation, presenting as solar lentigines, irregular pigmentation, fine lines, deeper wrinkles, leathery texture, and elevated skin cancer risk. UVA penetrates the dermis and drives collagen breakdown; UVB damages epidermal DNA and triggers melanin overproduction. Extrinsic factors, with UV exposure carrying the largest share, account for an estimated 80% of premature visible skin aging. Daily broad-spectrum SPF, antioxidant serums, and pigmentation correctors reverse early damage and prevent further progression. The BIOSAR Sunprotex range delivers broad-spectrum UVA + UVB protection layered with antioxidants for measurably stronger photoprotection.

From the BIOSAR catalog

Products formulated with Alpha-Arbutin

Next ingredientArgan Oil