FAQ – Cu Hair & Skin

Can I use this with other skincare or haircare?

Yes. Cu⁺ products are designed to integrate into existing routines.

Why are the products blue?

The blue hue is a natural characteristic of copper peptide formulations. The exact shade can vary between products and concentrations.

Is this injectable GHK-Cu?

No. All Cu⁺ products are topical cosmetic formulations for external use only.

Is this right for my skin type?

Cu⁺ skincare can be incorporated into many cosmetic routines, but suitability depends on your individual skin and the complete formula. Dry skin types may prefer additional moisturiser, while oilier skin types may prefer just serums. If you have sensitive skin or known ingredient sensitivities, review the full ingredient list and patch test before full use.

Is this safe for sensitive skin?

GHK-Cu is generally considered suitable for most skin types, including sensitive skin. However, everyone’s skin is different, so we recommend performing a patch test before full use.

If irritation occurs, discontinue use and consult a healthcare professional.

How long does it take to see results for skin?

A typical cosmetic-use timeline is immediate hydration and skin feel, around 4–8 weeks to assess visible changes in texture and radiance, and 12+ weeks for longer-term assessment of skin appearance. Results vary between individuals and depend on the product, routine and consistency of use.

How long does it take to see results for hair?

Hair appearance changes gradually. A typical routine allows around 8–12 weeks to begin assessing the appearance of fullness, thickness and volume, with 3–6 months providing a longer period to assess overall hair appearance. Results vary between individuals and consistency is important when evaluating a haircare routine.

What is the typical timeline for the Body Lotion?

Skin can feel hydrated and softer immediately after application. Allow around 1–2 weeks of consistent use to assess changes in softness and smoothness, with continued use helping maintain a conditioned skin feel. Individual results vary.

What ages can use GHK-Cu?

GHK-Cu products are generally used by adults and are most commonly used by people who are looking to improve the appearance of skin or hair.

We recommend these products for adult use only.

What is GHK-Cu, the beauty peptide?

GHK-Cu is a naturally occurring copper peptide found in the human body. It is commonly used in skincare and hair products to support skin and hair appearance.

In cosmetic products, GHK-Cu is known for helping improve the appearance of:

Skin firmness
Fine lines and wrinkles
Skin texture
Hair thickness appearance

It is often called “the beauty peptide” because of its wide range of cosmetic uses for both skin and hair.

Why is GHK-Cu considered one of the best peptides?

GHK-Cu is popular because it is a multi-purpose cosmetic peptide, meaning it can be used for both skin and hair products. We use it in our formulations due to its stability, compatibility with many skincare ingredients, and its ability to support overall skin and hair appearance.

Many people choose copper peptides because they can be used long-term and fit easily into most skincare and haircare routines.

Can I use GHK-Cu with other products?

Topical GHK-Cu cosmetics can generally be used with most skincare and haircare products. It works well alongside:

Hyaluronic acid
Moisturisers
Niacinamide
Peptides
Most serums

If using multiple active products, it is usually best to apply the topical GHK-Cu cosmetic after cleansing and before heavier creams or oils.

Ensure you do not use the topical GHK-Cu cosmetic with non-compatible products to avoid deteriorating the formulas stability.

Directions for use

Please read product labels for directions of use. Below is general summary of best use practices.

Skin:
Apply a small amount to clean, dry skin once or twice daily before moisturiser.

Hair / Scalp:
Apply a small amount directly to the scalp in the target area once or twice daily and gently massage in. Do not rinse out.

Use consistently for best results.

Do you ship internationally?

Yes, we offer international shipping to select countries, including the United States. Shipping costs and delivery times are calculated at checkout based on your location.

Delivery times for international orders are estimates only and may vary due to customs processing and local postal services.

See our shipping policy here.

How can I track my order?

Once your order has been shipped, you will receive a shipping confirmation email with your tracking number and a link to track your parcel.

You can use the tracking link in the email to see the latest updates on your delivery. Please allow some time for tracking information to appear after your order has been dispatched.

If you cannot find your tracking email, please check your spam or junk folder, or contact us at support@cuhairskin.com.au and we will resend your tracking information.