Palmitoyl Pentapeptide-4 (Matrixyl) for Libido
Original Matrixyl peptide; signals fibroblasts to upregulate collagen I/III and fibronectin.
Why Palmitoyl Pentapeptide-4 (Matrixyl) for libido?
Palmitoyl Pentapeptide-4 (pal-KTTKS) is the original Matrixyl, developed by Sederma. The palmitoyl chain enhances stratum-corneum penetration; the KTTKS sequence is a procollagen I fragment that feedback-stimulates fibroblast collagen synthesis. Industry placebo-controlled trials show modest wrinkle-depth reduction at 4 ppm over 12 weeks.
Libido context: Modulating melanocortin / kisspeptin pathways relevant to sexual response and arousal. Palmitoyl Pentapeptide-4 (Matrixyl) fits this goal because its category (Cosmetic) and benefit profile align with the underlying mechanism.
Benefits relevant to libido
- Collagen I/III synthesis
- Reduces fine lines
- Improves skin firmness
Reference dosing by bodyweight
Anchored to the most-cited research dose (250 mcg @ 75 kg). Reference only.
| Bodyweight band | Reference dose range |
|---|---|
| <60 kg / <132 lb | 156–211 mcg |
| 60–75 kg / 132–165 lb | 191–259 mcg |
| 75–90 kg / 165–198 lb | 234–316 mcg |
| 90–105 kg / 198–231 lb | 276–374 mcg |
| >105 kg / >231 lb | 319–431 mcg |
Side effects to weigh against libido benefit
- Rare contact sensitivity
- Topical only
Educational use only
This calculator is provided for research and educational purposes. Outputs are derived from the values you enter. Always verify your math and consult a licensed physician before acting on any result.