Dr. Jill Zavada
Naturopath FDNP
Peptides that actually reach the scalp and support visible density.
Dermatology • Hair Health
FREE Shipping & FREE Gifts
Limited Time
Black Friday
Free Shipping & Free GiftsOver 300,000 Happy Customers30-Day Money-Back GuaranteeFree Shipping & Free GiftsOver 300,000 Happy Customers30-Day Money-Back GuaranteeFree Shipping & Free GiftsOver 300,000 Happy Customers30-Day Money-Back Guarantee
Order by Month 00th AND GET 1 FREEBlack Friday
Peptide-Powered Hair Serum To Support Visibly Thicker, Fuller-Looking Hair
4.6/5 based on 17,756+ reviews
Doctor-formulated serum that strengthens the follicle's anchoring structure to the root, so hair stops shedding and holds stronger.
Select quantity:
Includes 5 free bonuses
Free
Shipping
FREE $4.95
Scalp
Massager
FREE $39.99
Hair Growth
Guide
FREE $29.99
Dyson
Airwrap™
CHANCE TO WIN
Gift Unlocked
Glow
Boost
FREE $27.00
Monthly VIP Benefits
- Unlock 45% OFF FOREVER
- Refill ships in 90 days at $32.99 each
Clinically Tested • Doctor Formulated • Non-Toxic Ingredients
Women loving their hair again
Money-back guarantee:
See less shedding in 30 days or it's free.
Third-party Tested
Clinically Tested to Support Fuller Volume
88%
Saw hair volume increase after just 56 days*
94%
Noticed less hair loss within 56 days*
88%
Improved hair thickness over time.*
*Based on a clinical study with 56 participants over 90 days.
Results that thousands of customers love
"The first thing I noticed was way less shedding. That alone made me want to keep using it."
– Lea
"Seeing way less hair in the shower drain after some weeks and my hairline is filling in."
– Jessica K.
"I finally have baby hairs growing back along my hairline. Absolutely love this serum!"
– Jennifer R.
"The only product that grew back my thin spots without irritating my sensitive scalp."
– Amanda B.
"Saved my thinning hair after having my baby without making my scalp greasy."
– Lisa T.
How it works
Stronger Roots, Fuller Hair
Stronger follicles hold the hair you have and grow new hair in thicker. Less shedding, more thickness, fuller hair.
Shedding Starts At The Root
When the follicle weakens, two things happen: hair sheds before finishing its growth cycle, and the new hair that replaces it grows in finer. Less hair, and thinner hair.
Benefits of our peptide powered Hair serum
Bring Back Thicker, Fuller-Looking Hair
Discover the Hair Care Science Behind This Product
Reinforces the anchor that holds each strand, so hair stays rooted longer and grows back thicker. Less shedding, more density.
What to Expect
From Less Shedding to Fuller Hair
1
Week 2–4
Less Hair in the Drain & Brush.
Most notice noticeably less shedding within two weeks. Your follicles are responding.
2
Month 2–3
Your Hair Starts Looking Fuller.
New growth fills in your part and hairline. You can feel it thicker in your hands.
3
Month 4–6
Your Part Line Fills In. Volume Returns.
Thinning spots are visibly fuller. Your ponytail has weight again. You need fewer styling tricks.
Us vs Them.
The Real Difference
The Spa Dr.Other Brands
Water-based, absorbs clean to the root with no grease
Peptide-powered anchoring support
Targets thinning at the follicle level
Clean, non-toxic formula
Drug-free - no minoxidil, no side effects
We're Serious About Quality
What They're Saying
Women Loving Their Hair Again
4.6 from 17,756+ reviews | 300,000+ customers
Stephanie
The Spa Dr. Hair Serum
My thinning temples were so bad my slick back bun was giving Dr. Evil. This water-based serum changed everything, zero greasy buildup, and I went from bald spots to full Mufasa volume!
Vicky
The Spa Dr. Hair Serum
Stop wasting money on trendy, heavy products! I wasn't getting my desired results until I realized the secret: this water-based formula actually absorbs and works.
Raellishae
The Spa Dr. Hair Serum
My scalp was completely see-through. This water-based serum actually works. My empty areas are finally filling in and I'm seeing the difference in real time!
Stephanie
The Spa Dr. Hair Serum
I so desperately wanted long, beautiful, lush hair and now I'm getting it
Hannaleigh
The Spa Dr. Hair Serum
I used to think losing this much hair was normal. It's not. This is the only serum that actually stopped the fallout!
Isabella
The Spa Dr. Hair Serum
No absorption, no growth. This is the only serum that actually penetrates the scalp instead of just sitting on top!
Bianca
The Spa Dr. Hair Serum
“Omg, yes! The baby hairs are finally coming in. I can actually see the difference!”
Doctor-Recommended.Backed by Science.
Our Hair Serum is trusted by doctors for its clinically-tested formula that targets thinning hair at the root.
Dr. Terra Winston
Naturopathic Physician
Targets the root cause of thinning with a formula I trust.
Trichology • Hair Restoration
Dr. Grace
Naturopathic Physician
Clinically inspired ingredients that support stronger, fuller-looking hair.
Dermatology • Scalp Health
Dr. Becky Campbell
Board-Certified Doctor of Natural Medicine
A smart, science-backed approach to healthier, fuller-looking hair.
Dermatology • Hair Health
Joyce Jackson
Certified Nutritionist & Midlife Hormone Health Advocate
Gives the scalp exactly what it needs to combat hair shedding at the source.
Dermatology • Hair Health
Customer Reviews
4.6/5
Based on 17,756+ Reviews
Reviews (17,756)
Daphne Sinclair
My hair is thicker!
My hair looks fuller after 3 months, and my scalp doesn't itch anymore. It really works.
00
Isabella White
Verified BuyerMy hair is growing!
My hair wouldn't grow with anything. Now it's finally thicker and longer.
00
Emma Brooks
I'm seeing way less hair in my brush!
This helped with shedding and made my scalp feel so much better.
00
Sarah Redmond
Verified BuyerForget the expensive serums...This one works!
Tried so many serums. This is the only one that gave me thicker hair and a healthier scalp.
00
Zoe Gresham
Verified BuyerCan't believe the change!
My scalp feels so much healthier, and my fine hair looks noticeably thicker.
00
Try it risk-free for 30 days.
With our money back guarantee.
Guaranteed Safe Checkout
Frequently Asked Questions
Hurry! Order Today For FREE Gift & FREE Shipping
Limited Time
Black Friday
Free Shipping & Free GiftsOver 300,000 Happy Customers30-Day Money-Back GuaranteeFree Shipping & Free GiftsOver 300,000 Happy Customers30-Day Money-Back GuaranteeFree Shipping & Free GiftsOver 300,000 Happy Customers30-Day Money-Back Guarantee
Order by Month 00th AND GET 1 FREEBlack Friday
Peptide-Powered Hair Serum To Support Visibly Thicker, Fuller-Looking Hair
4.6/5 based on 17,756+ reviews
Doctor-formulated serum that strengthens the follicle's anchoring structure to the root, so hair stops shedding and holds stronger.
Select quantity:
Includes 5 free bonuses
Free
Shipping
FREE $4.95
Scalp
Massager
FREE $39.99
Hair Growth
Guide
FREE $29.99
Dyson
Airwrap™
CHANCE TO WIN
Gift Unlocked
Glow
Boost
FREE $27.00
Monthly VIP Benefits
- Unlock 45% OFF FOREVER
- Refill ships in 90 days at $32.99 each
Clinically Tested • Doctor Formulated • Non-Toxic Ingredients
Women loving their hair again
Money-back guarantee:
See less shedding in 30 days or it's free.
Third-party Tested
Clinically Tested to Support Fuller Volume
88%
Saw hair volume increase after just 56 days*
94%
Noticed less hair loss within 56 days*
88%
Improved hair thickness over time.*
*Based on a clinical study with 56 participants over 90 days.
Results that thousands of customers love
"The first thing I noticed was way less shedding. That alone made me want to keep using it."
– Lea
"Seeing way less hair in the shower drain after some weeks and my hairline is filling in."
– Jessica K.
"I finally have baby hairs growing back along my hairline. Absolutely love this serum!"
– Jennifer R.
"The only product that grew back my thin spots without irritating my sensitive scalp."
– Amanda B.
"Saved my thinning hair after having my baby without making my scalp greasy."
– Lisa T.
How it works
Stronger Roots, Fuller Hair
Stronger follicles hold the hair you have and grow new hair in thicker. Less shedding, more thickness, fuller hair.
Shedding Starts At The Root
When the follicle weakens, two things happen: hair sheds before finishing its growth cycle, and the new hair that replaces it grows in finer. Less hair, and thinner hair.
Benefits of our peptide powered Hair serum
Bring Back Thicker, Fuller-Looking Hair
Discover the Hair Care Science Behind This Product
Reinforces the anchor that holds each strand, so hair stays rooted longer and grows back thicker. Less shedding, more density.
What to Expect
From Less Shedding to Fuller Hair
1
Week 2–4
Less Hair in the Drain & Brush.
Most notice noticeably less shedding within two weeks. Your follicles are responding.
2
Month 2–3
Your Hair Starts Looking Fuller.
New growth fills in your part and hairline. You can feel it thicker in your hands.
3
Month 4–6
Your Part Line Fills In. Volume Returns.
Thinning spots are visibly fuller. Your ponytail has weight again. You need fewer styling tricks.
Us vs Them. The Real Difference
The Spa Dr.Other Brands
Water-based, absorbs clean to the root with no grease
Peptide-powered anchoring support
Targets thinning at the follicle level
Clean, non-toxic formula
Drug-free - no minoxidil, no side effects
We're Serious About Quality
What They're Saying
Women Loving Their Hair Again
4.6 from 17,756+ reviews | 300,000+ customers
Stephanie
The Spa Dr. Hair Serum
My thinning temples were so bad my slick back bun was giving Dr. Evil. This water-based serum changed everything, zero greasy buildup, and I went from bald spots to full Mufasa volume!
Vicky
The Spa Dr. Hair Serum
Stop wasting money on trendy, heavy products! I wasn't getting my desired results until I realized the secret: this water-based formula actually absorbs and works.
Raellishae
The Spa Dr. Hair Serum
My scalp was completely see-through. This water-based serum actually works. My empty areas are finally filling in and I'm seeing the difference in real time!
Stephanie
The Spa Dr. Hair Serum
I so desperately wanted long, beautiful, lush hair and now I'm getting it
Hannaleigh
The Spa Dr. Hair Serum
I used to think losing this much hair was normal. It's not. This is the only serum that actually stopped the fallout!
Isabella
The Spa Dr. Hair Serum
No absorption, no growth. This is the only serum that actually penetrates the scalp instead of just sitting on top!
Bianca
The Spa Dr. Hair Serum
“Omg, yes! The baby hairs are finally coming in. I can actually see the difference!”
Doctor-Recommended.Backed by Science.
Our Hair Serum is trusted by doctors for its clinically-tested formula that targets thinning hair at the root.
Dr. Jill Zavada
Naturopath FDNP
Peptides that actually reach the scalp and support visible density.
Dermatology • Hair Health
Dr. Terra Winston
Naturopathic Physician
Targets the root cause of thinning with a formula I trust.
Trichology • Hair Restoration
Dr. Grace
Naturopathic Physician
Clinically inspired ingredients that support stronger, fuller-looking hair.
Dermatology • Scalp Health
Dr. Becky Campbell
Board-Certified Doctor of Natural Medicine
A smart, science-backed approach to healthier, fuller-looking hair.
Dermatology • Hair Health
Joyce Jackson
Certified Nutritionist & Midlife Hormone Health Advocate
Gives the scalp exactly what it needs to combat hair shedding at the source.
Dermatology • Hair Health
Customer Reviews
4.6/5
Based on 17,756+ Reviews
Reviews (17,756)
Daphne Sinclair
My hair is thicker!
My hair looks fuller after 3 months, and my scalp doesn't itch anymore. It really works.
00
Isabella White
Verified BuyerMy hair is growing!
My hair wouldn't grow with anything. Now it's finally thicker and longer.
00
Emma Brooks
I'm seeing way less hair in my brush!
This helped with shedding and made my scalp feel so much better.
00
Sarah Redmond
Verified BuyerForget the expensive serums...This one works!
Tried so many serums. This is the only one that gave me thicker hair and a healthier scalp.
00
Zoe Gresham
Verified BuyerCan't believe the change!
My scalp feels so much healthier, and my fine hair looks noticeably thicker.
00
Try it risk-free for 30 days.
With our money back guarantee.
Guaranteed Safe Checkout