Science
Mechanism of Action
This synthetic tetrapeptide primarily functions by upregulating the expression of Heat Shock Protein 70 (HSP70) within skin cells. HSP70 acts as a crucial molecular chaperone, facilitating the correct refolding of proteins and clearing irreversibly damaged ones, thereby preserving cellular homeostasis and reducing proteotoxic stress. This mechanism translates to improved stress tolerance, enhanced cell protection, stimulation of collagen synthesis for anti-aging benefits, and a reduction in inflammatory responses.
Research
Clinical Evidence
Low confidenceThe recommended use level in cosmetic formulations is between 2-5%. While benefits like enhanced stress tolerance, cell protection, and anti-aging are frequently cited, these are primarily derived from *in vitro* studies or supplier claims, with detailed human clinical study findings at this specific concentration not readily available in the provided research.
Transparency
Dusting Analysis
Information regarding the 'dusting' of Tetrapeptide-22 or specific thresholds for reduced efficacy due to formulation practices is not available in the provided research data.
The Formula
Formulation
Stability
Tetrapeptide-22 is reported to be stable. General peptide stability can be influenced by pH, with buffer solutions typically maintained between pH 3-5 often contributing to reduced degradation.
Conflicts
- General peptide incompatibility with aldehyde-releasing substances such as glycerol, polyethylene glycols, N,N-dimethylacetamide, polyethylene oxide, and crospovidone should be considered. These substances may induce chemical instability via Maillard reactions.
Safety
Safety Profile
Tetrapeptide-22 is a synthetic ingredient. While not formally reviewed by the Cosmetic Ingredient Review (CIR) or Scientific Committee on Consumer Safety (SCCS), supplier data indicates an absence of heavy metals and no reported skin or eye irritation, suggesting a low sensitization risk.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Tetrapeptide-22 is a valuable ingredient for enhancing skin's natural defense mechanisms against stress and supporting anti-aging initiatives, despite the current limited availability of published human clinical study data.
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