Question 1

What are the benefits of GHK-Cu for skin?

Accepted Answer

As a cosmetic skin-conditioning peptide, GHK-Cu supports the appearance of smoother, firmer, better-hydrated skin — particularly useful on thin under-eye skin.

Question 2

Is GHK-Cu safe?

Accepted Answer

Copper tripeptide-1 is widely used at cosmetic concentrations and is generally well tolerated, including by sensitive skin. Patch test before first use.

Question 3

Can you use GHK-Cu with vitamin C?

Accepted Answer

Use them at different times of day. Both are fine ingredients; separating them gives you a cleaner result from each.

Question 4

How long does GHK-Cu take to work?

Accepted Answer

Hydration and smoothness are visible immediately after a patch. Any cumulative change in texture is a matter of weeks of consistent use.

Question 5

Why are copper peptide products blue?

Accepted Answer

The copper ion bound in the peptide gives the formula its characteristic blue tint — it isn't added colour.

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