Science
Mechanism of Action
Aloesin functions as a competitive inhibitor of tyrosinase, a key enzyme in melanogenesis, thereby directly reducing melanin synthesis by blocking the hydroxylation of tyrosine to DOPA and the subsequent oxidation of DOPA to dopaquinone. Beyond its depigmenting action, it exhibits antioxidant and anti-inflammatory properties. Aloesin accelerates wound healing by stimulating cell migration through the phosphorylation of Cdc42 and Rac1, promoting angiogenesis, and regulating the release of crucial cytokines (IL-1β, IL-6, TGF-β1, TNF-α) and growth factors from macrophages. Additionally, it provides protection against UV-B radiation and contributes to skin moisturization.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Aloesin treatment demonstrated a 34% suppression of UV-induced pigmentation compared to control when administered four times daily for 15 days, confirming a dose-dependent reduction in melanin. This effect was further amplified when co-treated with 100 mg of arbutin per gram of vehicle.
- 02 Ointment formulations containing Aloesin at concentrations ranging from 2.5% to 7.5% displayed antibacterial efficacy, with the 7.5% concentration proving most effective against Propionibacterium acnes.
- 03 In vivo studies utilizing mouse skin models indicated that Aloesin, at concentrations of 0.1% and 0.5%, significantly accelerated wound closure rates. This was achieved through the induction of angiogenesis, increased collagen deposition, and enhanced granulation tissue formation.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Aloesin is susceptible to photocatalyzed degradation, particularly in solution, necessitating storage in the dark. Aqueous solutions are not recommended for storage exceeding one day. However, the compound exhibits resistance to thermal denaturation and mild acid hydrolysis.
Synergies
- Enhanced depigmenting effect when combined with arbutin (e.g., 100 mg/g arbutin).
Safety
Safety Profile
Aloesin is generally considered safe for most skin types, exhibiting minimal toxicological activity and no evidence of genotoxic potential in both in vitro and in vivo studies. Nevertheless, a preliminary skin tolerance test is always advisable for individual users.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Aloesin is a valuable multi-functional ingredient, effectively targeting hyperpigmentation while providing significant wound healing, antibacterial, antioxidant, and UV protective benefits for comprehensive skin support.
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References
Sources