Understand the source comparison
Peptides Help with Stretch Marks: Formulation Comparison
Palmitoyl Pentapeptide-4 (Matrixyl) Mimics procollagen fragment, upregulates collagen I/III gene expression via TGF-β receptor binding 20.4% width reduction in RCT (Dermatologic Surgery 2015), 64% responder rate at 12 weeks Mature white stretch marks (striae a
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Palmitoyl Pentapeptide-4 (Matrixyl)
- Mimics procollagen fragment, upregulates collagen I/III gene expression via TGF-β receptor binding
- 20.4% width reduction in RCT (Dermatologic Surgery 2015), 64% responder rate at 12 weeks
- Mature white stretch marks (striae albae) needing texture improvement
- Requires liposomal delivery or hyaluronic acid carrier
- Most evidence-backed for established scars. Consistent but modest results
- Copper Tripeptide-1 (GHK-Cu)
- Activates metalloproteinases to degrade damaged collagen, stimulates new collagen and GAG synthesis
- 15.7% pigmentation improvement, 12.3% elasticity gain (J Drugs Dermatol 2018)
- Pigmentation contrast reduction in white stretch marks
- Penetrates well at 3% concentration without additional carriers
- Best for pigmentation mismatch. Less effective for deep textural scarring
- Acetyl Hexapeptide-8 (Argireline)
- Reduces dermal micro-contractions, allows uniform collagen deposition, secondary anti-inflammatory effect
- 19% improvement in striae rubrae over 8 weeks (Clin Cosmet Investig Dermatol 2020)
- Fresh red stretch marks (striae rubrae) with active inflammation
- Effective at 5% with standard cream base
- Most effective on fresh marks. Minimal effect on mature white scars
- Hexapeptide-11
- Stimulates collagen IV and laminin-5 synthesis in dermal-epidermal junction
- Limited published data. Primarily in vitro fibroblast studies
- Theoretical benefit for early intervention
- Unknown penetration profile
- Insufficient clinical evidence for standalone recommendation