Science
Mechanism of Action
Lactoflavin functions as a crucial antioxidant, actively shielding skin cells from oxidative stress induced by free radicals and aiding in the regeneration of other vital antioxidants like glutathione. It accelerates skin cell regeneration, facilitating tissue repair and growth, and is integral to collagen synthesis, which enhances skin elasticity and firmness. This ingredient also helps mitigate inflammation and redness associated with conditions such as acne, eczema, and dermatitis by regulating mucus secretion within skin pores. Furthermore, Lactoflavin enhances skin hydration, reinforcing the epidermal barrier to prevent moisture loss, and contributes to a healthier skin tone and texture through improved microcirculation and cellular metabolism, while exhibiting anti-itch properties via TRPV1 modulation.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 At 0.12% w/v, utilized in ophthalmic solutions for corneal collagen cross-linking to manage progressive keratoconus or post-refractive surgery corneal ectasia.
- 02 Riboflavin phosphate at 0.1% improved the mechanical properties of water-based peel-off nail polish films through photocrosslinking.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Lactoflavin is notably photo-sensitive, undergoing rapid inactivation upon exposure to UV and visible light, necessitating opaque packaging. It also degrades in alkaline conditions. For enhanced water solubility in liquid formulations, its phosphate ester, riboflavin-5'-phosphate (FMN), is frequently preferred.
Conflicts
- Degrades upon co-formulation with Ascorbic acid (Vitamin C) under UV irradiation in cream formulations due to photochemical interaction.
- Coexistence with certain amino acids (e.g., tryptophan) and other vitamins (e.g., folic acid, ascorbic acid, trolox, L-histidine) during UVA exposure can generate hydrogen peroxide (H2O2) and potentially lead to cytotoxicity; however, L-cysteine is noted to mitigate this effect.
Safety
Safety Profile
Riboflavin (Vitamin B2) is classified by the FDA as Generally Recognized as Safe (GRAS) for food consumption and is approved for intravenous therapeutic use in multi-vitamins. European Cosmetics Regulation permits its use in cosmetics adhering to recommended concentrations. While generally well-tolerated, very high oral doses exceeding 400 mg daily have been associated with photosensitivity, manifesting as skin redness and inflammation. Some individuals, particularly those with sensitive skin, may rarely experience irritation or allergic reactions topically.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Lactoflavin is a valuable multi-functional ingredient, providing robust antioxidant defense, promoting cellular regeneration and collagen synthesis, and enhancing skin hydration and barrier integrity for comprehensive skin health.
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References
Sources