What is pure alpha arbutin?
Pure Alpha Arbutin is a kind of arbutin, which is the monoglucose form of hydroquinone. It is a new type of natural whitening active substance without irritation, allergy and compatibility. According to the different directions of the glycosidic bond in space, arbutin can be divided into β-arbutin and α-arbutin, the molecular formula of the two is exactly the same, but the spatial structure is different. Natural arbutin exists in plants such as bearberry and bilberry in β-configuration.
COA of Pure Alpha Arbutin:
| Item | Standard | Test Result |
| Assay(HPLC) | ≥99.5% | 99.98% |
| Organoleptic | ||
| Appearance | Crystalline powder | Conforms |
| Color | White | Conforms |
| Physical Characteristics | ||
| Loss on Drying | ≤1.0% | 0.15% |
| Residue on ignition | ≤0.5% | 0.06% |
| pH Value | 5.0-7.0 | 6.54 |
| Melting Range | 202°C~210°C | 202.4°C~203.0°C |
| Specific optical Ratation | [α]D20 + 175.0°~+185.0° | +179.26° |
| Transmittance | ≥95% | 96.8% |
| Hydroquinone（HPLC） | 10ppm | Conforms |
| Heavy metals | ||
| Total Heavy Metals | ≤10.0ppm | Conforms |
| Arsenic(As) | ≤2.0ppm | Conforms |
| Microbiological Tests | ||
| Total Plate Count | ≤1000cfu/g | Conforms |
| Yeast & Mold | ≤100cfu/g | Conforms |
| E.Coli. | Negative | Negative |
| Stahylococcus aureus | Negative | Negative |
| Conclusion | Conforms to the In-house Standard. |
Benefits:
1. Safety of α-metafructoside
Experiments show that a-arbutin has no cytotoxicity: a-arbutin can significantly reduce the activity of tyrosinase in melanocytes without affecting the survival activity of cells. In July 2015, a-arbutin was recognized as a safe and efficient cosmetic whitening agent by the European Commission on Consumer Safety (SCCS).
2. Stability of α-Arbutin
α-Arbutin converted by biological enzymes has high purity and stable structure (better heat resistance and light resistance), and will not be enzymatically hydrolyzed by β-glucoside in human skin during use, ensuring a - Excellent stability of arbutin in production and application.
3. High efficiency of α-arbutin
Studies have shown that a-arbutin inhibits the activity of tyrosinase through specific and reversible competition, blocks the formation of melanin, accelerates the decomposition and excretion of melanin, and achieves skin care effects. Therefore, a-arbutin has a high durability.
Recommended Dosage:
| Application Products | Amount of Addition |
| Aqueous and essence products | 0.2%-2.0% |
| Gel and lotion products | 0.3%-2.0% |
| Patch mask | 0.3%-2.0% |
| BB Cream, CC Cream, Liquid Foundation | 0.5%-2.0% |
| Cream products | 1%-2.0% |
In the formulation of whitening creams, pure alpha arbutin can be combined with other whitening ingredients, such as ascorbyl glucoside (AA2G), niacinamide, etc. The recommended dosage of each ingredient is: a-arbutin: 1.0-2.0%: niacinamide: 0.5-1.0%; AA2G: 1.0-2.0%.