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POLYCAPROLACTONE.

Insufficient Data CAS 24980-41-4 / LIGHT STABILIZER

Polycaprolactone (PCL) is a biodegradable polyester primarily recognized for its advanced collagen-stimulating properties. While extensively utilized in medical applications, its mechanism suggests potential for enhancing skin density, elasticity, and overall quality through long-term collagen and elastin synthesis.

Summary

Collagen Boosting Skin Firming Skin Conditioning Stabilising

Science

Mechanism of Action

Polycaprolactone functions as a bio-stimulator, initiating a sustained collagen production process within the skin. When applied, PCL microspheres or particles prompt a localized tissue repair response, leading to the formation of granulation tissue and the subsequent deposition of both collagen type-III and, crucially, long-term collagen type-I. This material also exerts mechanical tension on fibroblasts, encouraging them to synthesize new collagen and elastin, thereby improving skin structure and resilience.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 PCL-based dermal fillers significantly improved nasolabial folds in 90-91.4% of patients, with effects lasting 12-24 months.
  2. 02 An 80% improvement in overall skin quality (smoothness, freshness, younger appearance) was noted at 12 months post-filler injection.
  3. 03 A pilot study observed significant enhancements in skin quality and volume with 95% patient satisfaction.
  4. 04 PCL has been shown to promote human collagen type-I production in biopsies 6 months after filler injection.
  5. 05 Liquid PCL demonstrated efficacy in reversing skin laxity and boosting collagen and elastin synthesis in aged skin, at times surpassing other bio-stimulators.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Polycaprolactone nanoparticles exhibit stability at 4°C and room temperature for up to one year. However, PCL degrades under extreme pH conditions (pH 1 and pH 13), undergoing bulk erosion in highly acidic environments and surface erosion in highly alkaline ones. Optimal stability in formulations is achieved around a neutral pH range.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

Polycaprolactone holds FDA approval for various medical device applications, including sutures and drug delivery systems, demonstrating good biocompatibility. Post-market surveillance for PCL-based dermal fillers indicates a very low adverse event rate (0.056%), with most minor reactions (e.g., mild edema, lumps) often linked to injection technique. There is currently no specific safety assessment by the CIR or SCCS for Polycaprolactone as a topical cosmetic ingredient.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Insufficient Data

Polycaprolactone demonstrates significant potential as a collagen stimulator based on its proven efficacy in injectable applications, but further dedicated clinical research is required to fully establish its benefits and safety profile for topical cosmetic use.

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