• CopperTheory GHK-Cu Hair and Scalp Serum 1.0% with free microneedling stamp included
  • CopperTheory GHK-Cu Hair Serum ingredient infographic featuring copper peptide, red clover extract, niacinamide, panthenol and allantoin
  • CopperTheory GHK-Cu Hair Serum results infographic showing improved hair density, thinning-area coverage and cleaner scalp follicles
  • CopperTheory GHK-Cu Hair Serum infographic showing thicker strands, stronger hair fibres and follicle growth support
  • CopperTheory GHK-Cu Hair Serum real user results showing fuller, denser and stronger hair with a healthier scalp
  • CopperTheory GHK-Cu hair serum applied to scalp as part of an easy daily hair care routine
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Rated 4.52/5.0 by 103 customers

GHK-Cu Hair Growth Serum for Thinning Hair & Hair Density

A targeted 1% copper peptide scalp serum for thinning hair, reduced density, hairline, temples and crown.

✓ Hair Growth Support
✓ Thicker Hair
✓ Scalp Health Support
✓ Fuller Density
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$49.00 $69.00
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$44.10 $49.00
GHK-Cu Copper Peptide Hair Growth Serum for Thinning Hair & Hair Density

GHK-Cu Copper Peptide Hair Growth Serum for Thinning Hair & Hair Density

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Complete Copper Routine

Add 2 products + 10% off + free mask + free shipping

$44.10 $49.00
GHK-Cu Copper Peptide Hair Growth Serum for Thinning Hair & Hair Density

GHK-Cu Copper Peptide Hair Growth Serum for Thinning Hair & Hair Density

Main product

Add to My Routine

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Add to My Routine

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GHK-Cu Copper Peptide Hair Growth Serum for Thinning Hair & Hair Density

GHK-Cu Copper Peptide Hair Growth Serum for Thinning Hair & Hair Density

$44.10 $49.00
GHK-Cu Anti-Aging Face Cream for Wrinkles & Firmness

GHK-Cu Anti-Aging Face Cream for Wrinkles & Firmness

$53.10 $59.00
GHK-Cu Copper Peptide Anti-Aging Face Serum for Firm, Clear Skin

GHK-Cu Copper Peptide Anti-Aging Face Serum for Firm, Clear Skin

$53.10 $59.00
GHK-Cu Hydrating Face Mask 5 Pack for Plumper, Glowing Skin

GHK-Cu Hydrating Face Mask 5 Pack for Plumper, Glowing Skin

$26.10 $29.00
GHK-Cu Hair Growth Conditioner for Stronger, Smoother Hair

GHK-Cu Hair Growth Conditioner for Stronger, Smoother Hair

$32.40 $36.00
GHK-Cu Hair Growth Shampoo for Cleaner Scalp & Stronger Hair

GHK-Cu Hair Growth Shampoo for Cleaner Scalp & Stronger Hair

$32.40 $36.00
Complete 3-Step GHK-Cu Hair Growth Routine for Thinning Hair

Complete 3-Step GHK-Cu Hair Growth Routine for Thinning Hair

$116.10 $129.00
Complete 3-Step GHK-Cu Skincare Routine for Wrinkles & Hydration

Complete 3-Step GHK-Cu Skincare Routine for Wrinkles & Hydration

$134.10 $149.00
Complete 6-Piece GHK-Cu Skin, Hair & Scalp Routine

Complete 6-Piece GHK-Cu Skin, Hair & Scalp Routine

$242.10 $269.00
GHK-Cu Copper Peptide Under Eye Recovery Mask

GHK-Cu Copper Peptide Under Eye Recovery Mask

$21.60 $24.00
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GHK-Cu Copper Peptide Purifying Clay Mask

GHK-Cu Copper Peptide Purifying Clay Mask

$26.10 $29.00
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GHK-Cu Copper Peptide Pimple Patches

GHK-Cu Copper Peptide Pimple Patches

$17.10 $19.00
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GHK-Cu Copper Peptide Hair Growth Spray

GHK-Cu Copper Peptide Hair Growth Spray

$35.10 $39.00
Sold out
GHK-Cu Copper Peptide Facial Cleanser

GHK-Cu Copper Peptide Facial Cleanser

$26.10 $29.00
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Quick product guide.

Cu
Ingredients first

Copper peptide formula built for the scalp.

Main ingredients: Copper Tripeptide-1, Acetyl Tetrapeptide-3, Trifolium Pratense Flower Extract, Arginine, Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin.

1Copper Tripeptide-1 (GHK-Cu): the hero copper-binding peptide, supporting scalp condition and the environment around the follicle.
2Acetyl Tetrapeptide-3 with Red Clover: the hair-density pairing focused on weak, thinning areas.
3Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin condition the scalp, support the barrier and hold lightweight hydration.
See full ingredients
★
Reviews

Customer rating.

★★★★★ ★★★★★

4.5/5

See reviews
01
Benefits

Targets the scalp directly.

Built for scalp care, thinning areas, the hairline and crown, with fuller hair and visible density.

Scalp-first Fuller density
See benefits
02
Application

Apply to scalp. Leave on.

Part the hair, apply directly to the scalp, massage in and leave it on as the targeted scalp step.

Do not rinse Use consistently
See application
03
Routine

Shampoo, conditioner, serum.

Serum is the leave-on scalp step after cleansing and conditioning.

Step 3 Leave-on serum
See routine
Cu

Ingredients

Main ingredients: Copper Tripeptide-1, Acetyl Tetrapeptide-3, Trifolium Pratense Flower Extract, Arginine, Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin.

1Copper Tripeptide-1 (GHK-Cu): the hero copper-binding peptide, supporting scalp condition and the environment around the follicle.
2Acetyl Tetrapeptide-3 with Red Clover: the hair-density pairing focused on weak, thinning areas.
3Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin condition the scalp, support the barrier and hold lightweight hydration.
See full ingredients
★

Reviews
★★★★★ ★★★★★

4.5/5

See reviews
01

Benefits

Built for scalp care, thinning areas, the hairline and crown, with fuller hair and visible density.

Scalp-first Fuller density
See benefits
02

How to use

Part the hair, apply directly to the scalp, massage in and leave it on as the targeted scalp step.

Do not rinse Use consistently
See application
03

Routine

Serum is the leave-on scalp step after cleansing and conditioning.

Step 3 Leave-on serum
See routine
GHK-Cu hair growth serum

Target the scalp. Support hair growth. Build fuller density.

CopperTheory GHK-Cu Hair Growth Serum is the leave-on scalp serum in the CopperTheory hair system. It targets thinning hair and reduced density across the hairline, temples and crown while supporting hair growth, stronger hair and a healthier scalp environment.

The formula is built around GHK-Cu / Copper Tripeptide-1, Acetyl Tetrapeptide-3 and Trifolium Pratense Flower Extract, then supported by Arginine, Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin for a serious scalp-first hair growth routine.

Hair growth support Scalp serum Scalp environment Fuller hair Visible density Leave-on GHK-Cu step
Why this serum

Made for hair thinning, weak density and serious scalp goals.

Shampoo and conditioner wash off. A scalp serum stays where the routine matters. This is the targeted daily step for customers focused on hair growth support, stronger density and a better scalp routine.

1

Hair growth support

Built around GHK-Cu, Acetyl Tetrapeptide-3 and Red Clover Extract for a stronger hair-growth routine.

2

Scalp-first targeting

Applied directly to the scalp, not just coated through the hair lengths.

3

Fuller density routine

Supports fuller density and stronger hair with consistent use.

✓

Lightweight leave-on feel

A water-based scalp serum designed for routine consistency, not a heavy oil.

CopperTheory routine order

Shampoo → Conditioner → Hair Serum.

CopperTheory makes the hair growth routine clear. Wash the scalp, condition the hair, then use the leave-on GHK-Cu scalp serum as the targeted step.

1

GHK-Cu Shampoo

Cleanse the scalp and prepare the routine.

2

GHK-Cu Conditioner

Soften hair and support smoother, easier-to-manage strands.

3

GHK-Cu Hair Serum

Apply directly to the scalp as the leave-on hair growth support step.

Ingredients

The formula, ingredient by ingredient.

Every ingredient in this serum has a defined cosmetic role. Copper Tripeptide-1 leads; Acetyl Tetrapeptide-3 with Red Clover carries the density-focused work; and a considered supporting cast of Arginine, Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin conditions the scalp, supports the barrier and holds lightweight hydration.

Copper Tripeptide-1 — GHK-Cu hero copper peptide
The hero copper-binding peptide. It supports scalp condition, renewal signalling and the environment surrounding the hair follicle — forming the foundation of the CopperTheory hair routine and the reason the serum is left on the scalp.
Acetyl Tetrapeptide-3 — hair-density peptide
A targeted cosmetic peptide used in hair-density formulas. It works to support the structures around the hair root and reinforces the formula's focus on weak, thinning areas across the hairline, temples and crown.
Trifolium Pratense Flower Extract — Red Clover Extract
Red Clover Flower Extract complements Acetyl Tetrapeptide-3 and provides botanical support for the DHT pathway. Red Clover contains isoflavones such as biochanin A, studied for inhibiting 5-alpha-reductase — the enzyme involved in converting testosterone into DHT.
Arginine + Panthenol + Niacinamide
Arginine is an amino acid used to condition hair and support the feel and resilience of the hair fibre. Panthenol, a pro-vitamin B5, binds moisture, conditions the scalp and improves the flexibility and strength of dry hair. Niacinamide supports the scalp barrier and helps the scalp retain moisture and remain balanced.
Butylene Glycol + Glycerin + Sodium Hyaluronate + Allantoin
Sodium Hyaluronate is a water-binding form of hyaluronic acid that delivers lightweight hydration at the scalp. Allantoin soothes and conditions dry or uncomfortable scalp skin. Glycerin and Butylene Glycol are humectants and solvents that attract water and help distribute the formula evenly.
Full hair serum ingredient list
Aqua, Butylene Glycol, Glycerin, Copper Tripeptide-1, Acetyl Tetrapeptide-3, Trifolium Pratense Flower Extract, Arginine, Panthenol, Niacinamide, Sodium Hyaluronate, Allantoin, 1,2-Hexanediol, P-Hydroxyacetophenone, Xanthan Gum, Disodium EDTA.
Recommended routine

Build the full hair growth system.

Pair serum with shampoo and conditioner for a complete scalp-to-strand GHK-Cu hair routine.

Customer reviews

Real CopperTheory hair serum reviews.

See what customers say after adding GHK-Cu Hair Growth Serum into their scalp and hair care routine.

FAQ

GHK-Cu Hair Growth Serum questions.

What is CopperTheory GHK-Cu Hair Growth Serum?
CopperTheory GHK-Cu Hair Growth Serum is a lightweight, leave-in copper peptide scalp serum applied directly to the hairline, temples, crown and other thinning areas. Built around Copper Tripeptide-1 with Acetyl Tetrapeptide-3 and Red Clover, it supports the scalp environment and a fuller-density routine. Suitable for men and women; leave it in and do not rinse.
How do I use GHK-Cu Hair Growth Serum?
Part the hair, apply the serum directly to the scalp, massage gently and leave it on. Do not rinse out. Use consistently as the leave-on step after GHK-Cu Shampoo and GHK-Cu Conditioner.
What step is hair serum in the CopperTheory hair routine?
Hair serum is step three: shampoo first, conditioner second, then hair serum directly on the scalp. It is the most targeted step because it is left on instead of rinsed away.
What are the key hair growth support ingredients?
The key hair growth support ingredients are Copper Tripeptide-1, Acetyl Tetrapeptide-3 and Trifolium Pratense Flower Extract. The formula also includes Arginine, Panthenol, Niacinamide, Sodium Hyaluronate and Allantoin for scalp conditioning, barrier support and lightweight hydration.
What are the full ingredients?
Aqua, Butylene Glycol, Glycerin, Copper Tripeptide-1, Acetyl Tetrapeptide-3, Trifolium Pratense Flower Extract, Arginine, Panthenol, Niacinamide, Sodium Hyaluronate, Allantoin, 1,2-Hexanediol, P-Hydroxyacetophenone, Xanthan Gum and Disodium EDTA.
Does hair serum replace shampoo or conditioner?
No. Shampoo and conditioner support the wash routine. Hair serum is the targeted leave-on scalp step — the scalp-first focus of the whole hair-growth routine.
Who is this hair serum best for?
It's best for anyone building a scalp-first hair routine — customers focused on scalp health, hair growth support, and supporting fuller, denser hair over time.
What should I pair it with?
Pair it with GHK-Cu Hair Growth Shampoo, GHK-Cu Hair Growth Conditioner and the Complete GHK-Cu Hair Care Routine.

Build the hair growth routine from the scalp.

Use CopperTheory GHK-Cu Hair Growth Serum as the leave-in scalp treatment for thinning hair, hairline, temples and crown. Every Face Serum and Hair Serum order includes a free microneedling accessory while the offer is active.

Shop GHK-Cu Hair Growth Serum Shop Complete Hair Routine
Product pathway

One clean set of product, collection and guide links matched to this product.

GHK-Cu Hair Growth SerumThe focused leave-on scalp and hair growth serum step. Hair Growth & Scalp CareShop the CopperTheory hair growth and scalp range. Complete Hair Growth RoutineShampoo, conditioner and hair growth serum together. How to Use Hair SerumScalp access, timing and application basics. GHK-Cu for Scalp CareHow copper peptides fit a scalp-first routine. Copper Peptides for HairThe main hair and scalp education hub.

Current availability

This product is currently available. Variant availability and price shown above update directly from Shopify.

Shipping

Read the current shipping policy before ordering.

Returns and support

Read the current returns and refunds policy. For product questions, contact CopperTheory.