Understand the source comparison
Glow Stack for Skin Aging: Peptide and Antioxidant Protocol Comparison
Hydrolyzed Collagen Peptides (<5kDa) Stimulates fibroblast procollagen I synthesis via signaling peptides (Gly-Pro-Hyp) 2.5–10g daily, best absorbed on empty stomach High. Multiple RCTs show 20–30% improvement in skin elasticity over 8–12 weeks Essential found
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Hydrolyzed Collagen Peptides (<5kDa)
- Stimulates fibroblast procollagen I synthesis via signaling peptides (Gly-Pro-Hyp)
- 2.5–10g daily, best absorbed on empty stomach
- High. Multiple RCTs show 20–30% improvement in skin elasticity over 8–12 weeks
- Essential foundation. Provides both raw material and signaling function
- Copper Peptides (GHK-Cu)
- Dual action: stimulates collagen/elastin synthesis and inhibits MMP-1 collagenase activity
- 1–3mg elemental copper as GHK-Cu (topical preferred; oral 1–2mg)
- Moderate. Strong topical evidence, limited oral bioavailability data
- Best results topical; oral form supports systemic anti-inflammatory effects
- Vitamin C (Ascorbic Acid)
- Rate-limiting co-factor for proline/lysine hydroxylation in collagen triple helix stabilization
- 500–1,000mg daily in divided doses (200mg per dose for optimal absorption)
- High. Required for functional collagen synthesis; deficiency causes structural instability
- Non-negotiable. Split doses to avoid saturation of intestinal transport
- Reduced L-Glutathione
- Master antioxidant; neutralizes ROS during collagen synthesis phase and protects against lipid peroxidation
- 250–500mg daily (liposomal or reduced form for bioavailability)
- Moderate. Liposomal formulations show measurable plasma increases; clinical skin improvement 8–16%
- Protects newly synthesized collagen from oxidative cross-linking
- Carnosine
- Anti-glycation agent; binds reactive carbonyl groups before AGE formation; prevents elastin cross-linking
- 500–1,000mg daily
- Moderate. Reduces AGE accumulation by ~24% over 6 months in controlled trials
- Addresses the glycation pathway that stiffens dermal matrix