Hexarelin vs Palmitoyl Dipeptide-6
Side-by-side comparison of key properties, dosing, and research.
Growth Hormone Peptides
HexarelinSkin & CosmeticAnti-Aging & Longevity
Palmitoyl Dipeptide-6- Summary
- Hexarelin is a potent synthetic GHRP and the strongest GH secretagogue in its class per unit dose. It also exhibits unique cardioprotective properties through direct binding to cardiac CD36 receptors, independent of GH release. Its potency is balanced by a tendency to desensitize GH release with prolonged use, making cycling important.
- Palmitoyl Dipeptide-6 is a synthetic dipeptide (lysine-threonine) with a palmitoyl fatty acid tail, designed to penetrate the skin barrier and stimulate the extracellular matrix components essential for skin firmness. It activates fibronectin and type IV collagen synthesis, improving skin density and firmness particularly in mature or sagging skin.
- Half-Life
- ~70 minutes
- Not applicable (topical)
- Admin Route
- SubQ
- Topical
- Research
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- Typical Dose
- 100–200 mcg
- 0.005–0.05% in formulation
- Frequency
- 2–3 times daily
- Once or twice daily
- Key Benefits
- Strongest GH pulse per mcg among GHRPs
- Unique direct cardioprotective effects via CD36
- Increased IGF-1 and muscle anabolism
- Accelerated recovery from training
- Bone density support
- Anti-aging via GH axis
- Potential cardiac rehabilitation benefits
- Increases skin firmness and density
- Stimulates fibronectin and collagen IV production
- Strengthens the dermal-epidermal junction
- Reduces skin sagging in mature skin
- Improves skin texture and smoothness
- Supports extracellular matrix integrity
- Side Effects
- Water retention
- Elevated cortisol
- Elevated prolactin (more pronounced than other GHRPs)
- Receptor desensitization with continuous use
- +1 more
- Generally well-tolerated
- Rare mild skin irritation in sensitive individuals
- No known systemic effects at cosmetic concentrations
- Stacks With
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