Science
Mechanism of Action
Dipeptide-4 operates as a potent glutathione-biomimetic antioxidant, actively neutralizing free radicals and shielding the skin from oxidative stress and environmental aggressors. A critical mechanism is its anti-glycation property, where it effectively inhibits skin glycosylation, preventing the formation of Advanced Glycation End products (AGEs) that compromise collagen and elastin integrity. This action helps maintain skin elasticity and firmness. The peptide also contributes to enhanced skin hydration, strengthens the skin barrier, and actively supports cellular regeneration, including the stimulation of de novo collagen synthesis. Furthermore, it possesses soothing attributes that alleviate redness and reduce discomfort, making it beneficial for sensitive skin. Dipeptide-4 is also noted to improve microcirculation by inhibiting the conversion of angiotensin I to angiotensin II, and it demonstrably reduces wrinkles by promoting the synthesis of essential skin proteins. Its benefits extend to safeguarding cellular DNA against aging and improving the appearance of photodamaged complexions.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Clinically proven to reduce under-eye bagginess and puffiness, and to diminish wrinkles by promoting skin protein synthesis.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Peptides are generally known to be unstable. For optimal preservation, Dipeptide-4 should be stored in lyophilized form at 2-8°C for regular storage and -20°C for long-term storage. In solution, prolonged exposure to pH values exceeding 8 should be avoided to maintain stability. Peptides are susceptible to degradation through hydrolysis, particularly if they contain Aspartate (Asp) or Serine (Ser) residues in their sequence. Deamidation is another potential degradation pathway, often occurring in sequences containing Asparagine-Glycine (Asn-Gly) or Glutamine-Glycine (Gln-Gly).
Conflicts
- direct acids
- vitamin C
- resveratrol
- ferulic acid
- salicylic acid
Safety
Safety Profile
Dipeptide-4 is generally considered safe for cosmetic use and is included in lists of permitted substances by regulatory bodies such as the European Union. While typically well-tolerated, rare instances of allergic reactions, redness, itching, or irritation may occur, especially if the ingredient is used in large quantities or improperly. Peptides, particularly those with a molecular weight of 3500 Daltons or less, are generally considered not to be a concern for Type I hypersensitivity.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Dipeptide-4 is a valuable multi-functional peptide, offering significant antioxidant, anti-glycation, and anti-aging benefits while being well-tolerated across all skin types.
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