Science
Mechanism of Action
This synthetic signaling peptide functions by activating key cellular pathways, specifically Ras/MAPK and PI3K/Akt, within the skin. This activation stimulates the proliferation of both fibroblasts and keratinocytes, leading to increased synthesis of extracellular matrix (ECM) components, such as collagen and elastin, which contributes to anti-aging and overall skin revitalization. Furthermore, insights derived from its palmitoylated amide derivative suggest additional benefits, including anti-inflammatory properties that help suppress UVA-induced ECM protein breakdown, reduce skin redness by inhibiting angiogenesis, and modulate inflammatory responses by inhibiting pro-inflammatory cytokines like TNF-α and IL-1.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Tripeptides typically maintain their structural integrity and stability over several years when stored at ambient temperatures. Specific data regarding the optimal pH range for SH-TRIPEPTIDE-4's stability is not currently available.
Safety
Safety Profile
While direct regulatory status from CIR, SCCS, or FDA for SH-TRIPEPTIDE-4 specifically is not explicitly documented, its derivative, Palmitoyl sh-Tripeptide-4 Amide, has demonstrated a proven safety profile through numerous repeated-dose toxicity tests. Peptides are generally considered safe for topical application, with related peptides (e.g., Tripeptide-1, Hexapeptide-12, Palmitoyl Tetrapeptide-7) often deemed safe at concentrations typically below 10 ppm by Cosmetic Ingredient Review panels. The FDA also does not classify highly processed tissue-derived proteins and peptides as materials posing a risk for infectious agents.
Your Skin
Skin Compatibility
Our Assessment
Verdict
SH-TRIPEPTIDE-4 is a promising synthetic signaling peptide with a well-understood biological mechanism for promoting skin regeneration and potential anti-inflammatory benefits. However, direct clinical efficacy data for this specific INCI is currently limited, with many benefits extrapolated from its extensively studied derivative.
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