From powder to finished formula
You'll need distilled water, measuring spoons, a clean glass jar and a base serum, cream or lotion.
1 g powder + 20 mL (4 tsp) distilled water
Makes a 5% stock solution. Stir until clear and deep blue.
½ teaspoon of stock per 100 g (3.5 oz) of serum, cream or lotion
≈ 0.12% GHK‑Cu, the standard dose. Add it last, below 104°F (40°C).
| Per 100 g | Stock | Application |
|---|---|---|
| ¼ tsp | 1.25 mL | Gentle, first time, eye area |
| ½ tsp | 2.5 mL | Standard, serums and creams |
| 1 tsp | 5 mL | Scalp and hair, masks |
| 2 tsp | 10 mL | Maximum |
For a 1 oz bottle: ⅛ tsp of stock.
Refrigerate the stock solution, sealed
Use within 30 days. Unopened powder keeps 24 months somewhere cool, dry and dark.
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)
Turning purple or brown means the pH is off. Keep it between 5 and 7.
1 g powder + 20 mL (4 tsp) distilled water
Makes a 5% stock solution. Stir until clear and deep blue-violet.
½ teaspoon of stock per 100 g (3.5 oz) of scalp serum or tonic
≈ 0.12% AHK‑Cu, the standard dose. Add it last, below 104°F (40°C).
| Per 100 g | Stock | Application |
|---|---|---|
| ¼ tsp | 1.25 mL | Shampoo, conditioner, first time |
| ½ tsp | 2.5 mL | Standard, scalp serums, tonics |
| 1 tsp | 5 mL | Leave-in treatments, masks |
| 2 tsp | 10 mL | Maximum |
For a 1 oz bottle: ⅛ tsp of stock.
Refrigerate the stock solution, sealed
Use within 30 days. Unopened powder keeps 18 months somewhere cool, dry and dark.
Compatible with
- Water-based scalp serums and tonics
- Caffeine, niacinamide, panthenol
- Hyaluronic acid, glycerin, aloe
- Sulfate-free shampoos and conditioners
Keep separate from
- Vitamin C (ascorbic acid)
- EDTA and other chelators
- Salicylic acid and other acids below pH 5
- Minoxidil or high-alcohol solutions
Best in its own water-based product.
1 g powder + 100 mL (7 tbsp) distilled water
Makes a 1% stock solution. Stir until clear. Dissolve it soon after opening; the powder absorbs moisture.
½ teaspoon of stock per 100 g (3.5 oz) of serum, cream or lotion
≈ 0.025% SNAP‑8. Add it last, below 104°F (40°C).
| Per 100 g | Stock | Application |
|---|---|---|
| 10 drops | 0.5 mL | Gentle, first time, eye area |
| ½ tsp | 2.5 mL | Standard, serums and creams |
| 1 tsp | 5 mL | Maximum |
For a 1 oz bottle: ⅛ tsp of stock.
Refrigerate the stock solution, sealed
Use within 30 days. Unopened powder keeps 12 months somewhere cool, dry and dark.
Compatible with
- Hyaluronic acid, glycerin
- Niacinamide, other peptides
- Ceramides, squalane
- Serums, creams and gels at pH 3–6
Keep separate from
- Heat above 104°F (40°C)
- Strongly alkaline formulas (above pH 7)
- Strong acids (below pH 3) in the same bottle
- Storing the stock solution at room temperature
After an acid step, wait 15 minutes before applying a SNAP‑8 product.
Good practice
- Distilled water and glass or plastic utensils. Metal reacts with copper peptides.
- Actives go in last, below 104°F (40°C). Stir, don't shake.
- Patch-test new batches for 24 hours.
- Date every jar and bottle.