Ingredient or product comparison
How to Use GHK-Cu for Topical Anti-Aging Protocol: Formulation Comparison
The table below compares the three most common GHK-Cu delivery formats. Aqueous serum, liposomal suspension, and anhydrous oil. Across stability, penetration speed, and ideal use cases. Aqueous Serum (0.5–2% GHK-Cu) Fast (3–5 min absorption) pH 5.5–6.5 only No
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- The table below compares the three most common GHK-Cu delivery formats. Aqueous serum, liposomal suspension, and anhydrous oil. Across stability, penetration speed, and ideal use cases.
- Aqueous Serum (0.5–2% GHK-Cu)
- Fast (3–5 min absorption)
- pH 5.5–6.5 only
- No (if preservatives present)
- Daily anti-aging protocol with layered products
- Best bioavailability and cost-effectiveness when pH is controlled. Our standard recommendation for consistent use
- Liposomal Suspension (0.1–1% GHK-Cu)
- Moderate (5–8 min)
- Stable across pH 4–7
- Yes (lipid vesicles degrade >25°C)
- Sensitive skin, rosacea-prone users
- Superior penetration and reduced irritation, but refrigeration dependency and higher cost limit practicality for travel or inconsistent users
- Anhydrous Oil Suspension (0.05–0.5% GHK-Cu in squalane)
- Slow (8–12 min)
- pH-independent (no water phase)
- No
- Nighttime-only protocol, dry or compromised barrier
- Avoids pH degradation entirely but slower penetration means it's better suited for overnight application. Not ideal if you layer multiple AM products