Tripeptide-29 vs DSIP
Side-by-side comparison of key properties, dosing, and research.
Skin & CosmeticAnti-Aging & Longevity
Tripeptide-29Sleep OptimizationCognitive Enhancement
DSIP- Summary
- 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.
- DSIP is an endogenous neuropeptide originally isolated from rabbit cerebrospinal fluid that induces delta-wave (deep) sleep. It also modulates stress response, cortisol regulation, and LH secretion, making it valuable for sleep optimization and stress management.
- Half-Life
- Not applicable (topical)
- ~30–60 minutes; however downstream sleep effects last 4–6 hours
- Admin Route
- Topical
- SubQ, IV, Intranasal
- Research
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- Typical Dose
- 0.01-0.1% in formulation
- 100–400 mcg
- Frequency
- Once or twice daily
- Once nightly
- Key Benefits
- 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
- Induces and deepens delta-wave (slow-wave) sleep
- Reduces cortisol and normalizes HPA axis
- Improves sleep quality in insomnia patients
- Anti-stress and anxiolytic effects
- May improve opiate/alcohol withdrawal symptoms
- Analgesic properties through opioid modulation
- Antioxidant and neuroprotective effects
- Side Effects
- Excellent tolerability profile
- No documented significant adverse effects at cosmetic concentrations
- Rare sensitivity reactions in individuals with peptide allergies
- Generally well tolerated
- Mild grogginess next morning at higher doses
- Rare: hypotension
- Potential for altered dream patterns
- Stacks With
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