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Formulation guide

From powder to finished formula

You will need distilled water, a measuring teaspoon, a clean glass jar, and a serum, cream or lotion to use as your base. The same instructions are printed on the card supplied with every order.

GHK-Cu stock solution, vial and dropper bottle
01
Prepare the stock solution

1 g powder + 20 mL (4 tsp) distilled water

This makes a 5% stock solution. Stir until clear and deep blue. Use a clean glass jar or dropper bottle and a glass or plastic stirrer.

02
Dose

½ teaspoon of stock per 100 g (3.5 oz) of serum, cream or lotion

≈ 0.12% GHK‑Cu, the standard dose. Add it as the final step, once any heated phase has cooled below 104°F (40°C), and stir until even.

Per 100 gStockApplication
¼ tsp1.25 mLGentle · first time · eye area
½ tsp2.5 mLStandard · serums and creams
1 tsp5 mLScalp and hair · masks
2 tsp10 mLMaximum. Do not exceed.

For 30 g (1 oz) of product, use approximately ⅛ teaspoon of stock at the standard level.

03
Store

Refrigerate the stock solution, sealed

Below 39°F (4°C), and use within 30 days. Keep unopened powder cool, dry and away from light: shelf life 24 months unopened.

Compatible with

  • Hyaluronic acid, glycerin
  • Niacinamide, other peptides
  • Ceramides, squalane
  • Most creams, lotions and gels

Keep separate from

  • Vitamin C (ascorbic acid)
  • EDTA and other chelators
  • Strong acids (glycolic, lactic) or bases
  • Heat above 104°F (40°C)

A purple or brown shift indicates incorrect pH. Copper peptides are most stable between pH 5 and 7.

Copper Tripeptide-1

GHK‑Cu

Anti-aging serums, firming creams, scalp care. From $24.95.

View product

General guidance

  • Use distilled water and clean glass or plastic utensils. Metal can react with copper peptides.
  • Add actives last, below 104°F (40°C), and stir rather than shake.
  • Patch-test each new formulation on a small area of skin for 24 hours before regular use.
  • Label every preparation with the active, its strength and the date it was made.