Tripeptide-29 vs AICAR
Side-by-side comparison of key properties, dosing, and research.
Skin & CosmeticAnti-Aging & Longevity
Tripeptide-29Anti-Aging & LongevityFat Loss & Metabolic
AICAR- 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.
- AICAR is a cell-permeable AMP analog that activates AMPK (AMP-activated protein kinase) — the master metabolic switch that triggers fat burning, mitochondrial biogenesis, and adaptations normally only achieved through exercise. It has been called the 'exercise in a pill' compound.
- Half-Life
- Not applicable (topical)
- ~2–3 hours
- Admin Route
- Topical
- SubQ, IV
- Research
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- Typical Dose
- 0.01-0.1% in formulation
- 25–50 mg
- Frequency
- Once or twice daily
- 3–5 times per week
- 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
- AMPK activation mimics aerobic exercise adaptations
- Increased fat oxidation and endurance
- Mitochondrial biogenesis (PGC-1alpha)
- Improved insulin sensitivity and glucose metabolism
- Anti-inflammatory effects
- Potential cardiac protection during ischemia
- Synergistic with actual exercise training
- Reduces hepatic glucose production
- Side Effects
- Excellent tolerability profile
- No documented significant adverse effects at cosmetic concentrations
- Rare sensitivity reactions in individuals with peptide allergies
- Hypoglycemia risk
- Lactic acidosis at high doses (animal data)
- Injection site irritation
- Stacks With
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