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Results that thousands of customers love.

Before and after thicker ponytail results after 8 weeks

"My ponytail feels so much thicker now. This actually works."

Sarah M.

Before and after hairline results after 8 weeks

"Seeing way less hair in the shower drain after some weeks and my hairline is filling in."

- Jessica K.

Before and after baby hairs along hairline after 8 weeks

"I finally have baby hairs growing back along my hairline. Absolutely love this serum!"

- Jennifer R.

Before and after thin spots regrowth after 8 weeks

"The only product that grew back my thin spots without irritating my sensitive scalp."

- Amanda B.

Before and after postpartum hair results after 8 weeks

"Saved my thinning hair after having my baby without making my scalp greasy."

- Lisa T.

GHK-Cu and Acetyl Tetrapeptide-3 peptide droplets in a petri dish

the science

Five Natural Ingredients. Fuller, Thicker Hair.

GHK-Cu helps support thicker, fuller-looking hair, while Acetyl Tetrapeptide-3 helps strengthen and support the hair at the root.

OK MagazineWWDThe DoctorsE! EntertainmentVoyage NYHelloWomen's HealthUs WeeklyDaily MailFirst
OK MagazineWWDThe DoctorsE! EntertainmentVoyage NYHelloWomen's HealthUs WeeklyDaily MailFirst
Exclusive Welcome Kit

Exclusive welcome kit

Get started with this exclusive Welcome Kit today

A first-order ritual kit designed for visibly fuller-looking hair.

Hair Serum Transformation Pack

Buy 2 Get 1 Hair Serum forFree

$29.99/each

First Purchase Includes:

Chance to win a Dyson Airwrap

You could win a Dyson Airwrap™ valued up to $749 (only valid with The Spa Dr. subscription)

$749Chance to win

Nutritional Guide for Hair Growth

Step-by-step nutritional plan for stronger, fuller-looking hair.

$29.99Free

Scalp Massager

Boosts serum absorption and stimulates blood flow to follicles.

$39.99Free

Free Shipping

$4.95Free
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What everyone is loving right now

The Spa Dr.® Restore Shampoo
The Spa Dr.® Restore Shampoo

Our Copper Peptide Hair Serum is trusted by doctors and trichologists for a clinically-tested formula that delivers GHK-Cu, a Copper Peptide, straight to the root

Dr. Jill Zavada

Dr. Jill Zavada

Naturopath FDNP

“A Copper Peptide that actually reaches the scalp and supports visible density”

Dermatology • Hair Health
Dr. Terra Winston

Dr. Terra Winston

Naturopathic Physician

“It targets the root cause of thinning with a Copper Peptide I trust.”

Trichology • Hair Restoration
Dr. Grace

Dr. Grace

Naturopathic Physician

“Clinically inspired Copper Peptide ingredients that support stronger, fuller-looking hair.”

Dermatology • Scalp Health
Dr. Becky Campbell

Dr. Becky Campbell

Board-Certified Doctor of Natural Medicine

“A drug-free, science-backed way to support fuller-looking hair, no minoxidil, no hormones.”

Dermatology • Hair Health
Joyce Jackson

Joyce Jackson

Certified Nutritionist & Midlife Hormone Health Advocate

“For women in midlife, giving the follicle back the Copper Peptide it runs low on just makes sense.”

DERMATOLOGY • HAIR HEALTH

Real women. Real growth. Real results.

4.6 from 17,756+ reviews | 300,000+ customers

Woman applying Copper Peptide serum to wet hair
Woman applying Copper Peptide serum to her scalp
The Spa Dr. Copper Peptide 1% Hair Serum bottle and box

“Chasing the full potential of biomimetic peptides in hair growth cycles is where our curiosity, rigor, and purpose live.”

Women's Health
Woman with wavy hair applying Copper Peptide serum
Woman holding The Spa Dr. Copper Peptide Hair Serum

“Chasing the full potential of biomimetic peptides in hair growth cycles is where our curiosity, rigor, and purpose live.”

HELLO!
Serum droplets in glass dishes

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