Palmitoyl Pentapeptide-4 · pal-KTTKS · Palmitoyl Tripeptide-1
Collagen-stimulating cosmeceutical — proven skin renewal.
FDA
Research Only
WADA
Not Listed
HALF-LIFE
N/A (topical)
ROUTE
Topical
SCHEDULE
Daily
In Plain English
Collagen-stimulating cosmeceutical — proven skin renewal.
Status & Legality
What do these mean?Collagen synthesis
Skin firmness
Wrinkle reduction
Anti-aging
Matrixyl 3000 is a combination of two palmitoylated peptides (pal-KTTKS and pal-GHK) that stimulate the synthesis of collagen, fibronectin, and hyaluronic acid. One of the most clinically validated cosmeceutical peptides with multiple double-blind trials confirming wrinkle reduction equivalent to low-concentration retinol.
Very well tolerated
Rare skin sensitivity
Using at less than 5% concentration — lower concentrations show limited collagen stimulation in clinical studies
Expecting it to replace retinol — Matrixyl stimulates collagen synthesis but doesn't increase cellular turnover like retinoids; they're complementary, not substitutes
Applying and rinsing off quickly — it requires time on skin to signal fibroblasts to produce collagen
Retinol/retinoids — safe to use at separate times (AM Matrixyl, PM retinol); complementary mechanisms for overall skin renewal
Vitamin C — safe to combine; both support collagen synthesis via different mechanisms
Hyaluronic acid — commonly combined; no interaction; hyaluronic acid provides the hydration matrix collagen builds into
Matrixyl 3000 is the most clinically validated collagen-stimulating cosmeceutical after retinol. Double-blind trials showing wrinkle reduction comparable to low-dose retinol make it among the best-evidenced topical peptides in the skincare market. Use in the morning at 5%; reserve retinol for evenings. Results are measurable at 3–6 months of consistent use.
GHK-CU
Anti-aging copper peptide — skin, hair, collagen, and wound repair.
ARGIRELINE
Topical botox-like peptide — reduces expression lines.
AHK-CU
Hair growth copper peptide — stimulates follicle proliferation.
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Stats
Sources & Studies
Robinson LR. et al., Int J Cosmet Sci, 2005