Thymulin vs Tripeptide-29
Side-by-side comparison of key properties, dosing, and research.
Immune Support
ThymulinSkin & CosmeticAnti-Aging & Longevity
Tripeptide-29- Summary
- Thymulin is a nonapeptide hormone produced exclusively by the thymic epithelium. It requires zinc for biological activity and plays a critical role in T-lymphocyte maturation, differentiation, and immune regulation. Thymulin levels decline dramatically with age, contributing to immunosenescence.
- Tripeptide-29 is a pro-collagen cosmetic peptide composed of proline, hydroxyproline, and glycine — the core repeating unit of collagen. Applied topically, it signals dermal fibroblasts that collagen degradation has occurred, triggering compensatory new collagen synthesis.
- Half-Life
- ~30 minutes active half-life
- Not applicable (topical)
- Admin Route
- SubQ
- Topical
- Research
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- Typical Dose
- 20-30 mcg
- 0.01-0.1% in formulation
- Frequency
- 10 days per month (Khavinson protocol)
- Once or twice daily
- Key Benefits
- Enhances T-cell maturation and differentiation
- Boosts NK cell cytotoxic activity
- Reduces inflammatory cytokine production (TNF-α, IL-1)
- Anti-nociceptive (pain-reducing) properties
- Restores age-related immune decline
- Anti-inflammatory via serotonin pathway modulation
- Stimulates fibroblast collagen synthesis via damage-signal mechanism
- Reduces fine lines and improves skin smoothness
- Supports dermal matrix integrity
- Naturally bioidentical to collagen fragment sequences
- Well-tolerated in all skin types
- Synergistic with copper peptides and retinoids
- Side Effects
- Injection site reactions
- Mild fatigue initially as immune system activates
- Excellent tolerability profile
- No documented significant adverse effects at cosmetic concentrations
- Rare sensitivity reactions in individuals with peptide allergies
- Stacks With
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