Ingredient or product comparison
How to Use Peptides for Skin Care: Formulation and Delivery System Comparison
Delivery system determines whether peptides reach the dermis intact or degrade in the epidermis before signaling fibroblasts. Liposome-Encapsulated High. Lipid bilayer protects peptides from oxidation and pH shifts Deep. Liposomes fuse with cell membranes, del
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- Delivery system determines whether peptides reach the dermis intact or degrade in the epidermis before signaling fibroblasts.
- Liposome-Encapsulated
- High. Lipid bilayer protects peptides from oxidation and pH shifts
- Deep. Liposomes fuse with cell membranes, delivering peptides intracellularly
- Lightweight serum, slightly oily
- Signal peptides (palmitoyl tripeptide-1), copper peptides
- Gold standard for bioavailability. Liposomes are the most clinically validated delivery system for peptides, though formulations are expensive and require cold storage
- Silicone-Based Emulsion
- Moderate. Silicones provide barrier against water but limited oxidation protection
- Moderate. Film-forming layer controls release rate
- Silky, fast-absorbing
- Neurotransmitter-inhibiting peptides (acetyl hexapeptide-8)
- Excellent sensory profile and stable at room temperature, but penetration is slower than liposomal systems. Ideal for surface-acting peptides
- Aqueous Gel (Carbomer or Xanthan Gum)
- Low. Water content accelerates hydrolysis; preservatives required
- Superficial. Gels dry quickly, limiting contact time
- Lightweight gel, non-greasy
- Enzyme-inhibiting peptides, short-chain tripeptides
- Least expensive formulation type, but peptides degrade rapidly once opened. Use within 60 days and refrigerate after opening
- Anhydrous Serum (Oil-Based)
- Very High. Absence of water prevents hydrolysis entirely
- Variable. Depends on oil molecular weight and peptide modification
- Rich, occlusive
- Carrier peptides (GHK-Cu), lipophilic peptide derivatives
- Most stable formulation chemistry, but requires peptides to be oil-soluble (often achieved through palmitoylation). Slower penetration but longest shelf life
- Peptide + Hyaluronic Acid Hybrid
- Moderate. Hyaluronic acid increases viscosity, slowing degradation
- Moderate. HA holds peptides in contact with skin longer
- Viscous serum, hydrating
- Multi-peptide blends (signal + carrier peptides)
- HA improves peptide contact time without requiring occlusion, but formulations are prone to microbial contamination. Requires robust preservative system