Alpha Arbutin

Skin Brightening Agent

Also known as: α-Arbutin, 4-Hydroxyphenyl α-D-glucopyranoside

Description

Alpha arbutin is a biosynthetic glycosylated hydroquinone derivative that inhibits melanin production. It is more stable and considered safer than hydroquinone, making it a popular depigmenting agent in Indian and Asian skincare. It works by reversibly inhibiting tyrosinase without cytotoxic effects on melanocytes. [Sugimoto 2004] [Funayama 1995]

Mechanism of Action

Reversibly inhibits tyrosinase, the rate-limiting enzyme in melanin biosynthesis. Unlike hydroquinone, it does not cause melanocyte death. Slowly releases hydroquinone in a controlled manner, reducing the risk of irritation and ochronosis. [Funayama 1995]

Indications

Available Concentrations

0.5%1%2%

Side Effects

Contraindications

  • Known hypersensitivity to arbutin or hydroquinone

Pregnancy Category

Not classified (consult dermatologist)

Found In

Cosmetics containing Alpha Arbutin

Related Conditions

References

  1. Funayama M, Arakawa H, Yamamoto R, et al. "Effects of alpha- and beta-arbutin on activity of tyrosinases from mushroom and mouse melanoma." Biosci Biotechnol Biochem, 1995. doi:10.1271/bbb.59.143
  2. Sugimoto K, Nishimura T, Nomura K, et al. "Inhibitory effects of alpha-arbutin on melanin synthesis in cultured human melanoma cells and a three-dimensional human skin model." Biol Pharm Bull, 2004. doi:10.1248/bpb.27.510

Limitations

This page provides a general overview of Alpha Arbutin in dermatology. It does not cover every possible use, formulation, or interaction. Individual responses to compounds vary — what works for one person may not work for another. Always consult a qualified dermatologist before starting or changing any treatment.