Alpha Arbutin vs Kojic Acid
Comparing 2 Compounds
| Property | Alpha Arbutin | Kojic Acid |
|---|---|---|
| Category | Skin Brightening Agent | Skin Brightening Agent |
| Aliases | α-Arbutin, 4-Hydroxyphenyl α-D-glucopyranoside | Kojic Acid Dipalmitate, 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one |
| 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. | Kojic acid is a natural metabolite produced by several species of fungi (Aspergillus, Penicillium). It chelates copper at the active site of tyrosinase, inhibiting melanin production. Widely used in Indian and Asian depigmenting products, often in combination with arbutin or vitamin C. |
| Mechanism | 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. | Chelates copper ions at the active site of tyrosinase, rendering the enzyme inactive and suppressing melanogenesis. Also exhibits mild antioxidant and antimicrobial properties. Kojic acid dipalmitate is a lipophilic derivative with improved stability. |
| Indications | undefined, undefined, undefined, undefined, undefined | undefined, undefined, undefined, undefined |
| Concentrations | 0.5%, 1%, 2% | 1%, 2%, 4% |
| Side Effects | undefined, undefined | undefined, undefined, undefined |
| Contraindications | Known hypersensitivity to arbutin or hydroquinone | undefined, undefined |
| Pregnancy Category | Not classified (consult dermatologist) | Not classified (consult dermatologist) |
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