First thing I noticed was less hair in the drain, maybe week 3 or 4. I'm on my 3rd bottle now and I'm seeing baby hairs along my hairline.
Sue R. | Verified Review
Black Friday
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Visibly Thicker, Fuller Hair,
Powered by Peptides
The water-based serum that reaches the root where others sit on top, so you shed less and grow back thicker. 300,000+ women already have.
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.
Made in USAPeptide powered30 day money back guarantee56 day clinical trialOver 17,000 5 star reviewsMade in USAPeptide powered30 day money back guarantee56 day clinical trialOver 17,000 5 star reviews
REAL WOMEN. REAL RESULTS.
300,000+ Women Have Fuller Hair Thanks To The Spa Dr.
Around week 3 or 4, I saw fewer hairs clogging the drain. Now on my 10, I'm spotting tiny new hairs growing along my hairline.
Lea K. | Verified Review
I noticed less hair shedding on starters. Now, on my 3rd bottle, I'm starting to see almost a new hair line! I'm loving!!.
Kate C. | Verified Review
My part used to look so wide in photos. After two months of consistent use, the crown feels fuller and my ponytail actually has weight again.
Amanda T. | Verified Review
I was self-conscious about thinning at my temples. Halfway through bottle two, the edges filled in enough that I stopped hiding them with hair clips.
Maria L. | Verified Review
First thing I noticed was less hair in the drain, maybe week 3 or 4. I'm on my 3rd bottle now and I'm seeing baby hairs along my hairline.
Sue R. | Verified Review
Around week 3 or 4, I saw fewer hairs clogging the drain. Now on my 10, I'm spotting tiny new hairs growing along my hairline.
Lea K. | Verified Review
I noticed less hair shedding on starters. Now, on my 3rd bottle, I'm starting to see almost a new hair line! I'm loving!!.
Kate C. | Verified Review
My part used to look so wide in photos. After two months of consistent use, the crown feels fuller and my ponytail actually has weight again.
Amanda T. | Verified Review
I was self-conscious about thinning at my temples. Halfway through bottle two, the edges filled in enough that I stopped hiding them with hair clips.
Maria L. | Verified Review
First thing I noticed was less hair in the drain, maybe week 3 or 4. I'm on my 3rd bottle now and I'm seeing baby hairs along my hairline.
Sue R. | Verified Review
Around week 3 or 4, I saw fewer hairs clogging the drain. Now on my 10, I'm spotting tiny new hairs growing along my hairline.
Lea K. | Verified Review
I noticed less hair shedding on starters. Now, on my 3rd bottle, I'm starting to see almost a new hair line! I'm loving!!.
Kate C. | Verified Review
My part used to look so wide in photos. After two months of consistent use, the crown feels fuller and my ponytail actually has weight again.
Amanda T. | Verified Review
I was self-conscious about thinning at my temples. Halfway through bottle two, the edges filled in enough that I stopped hiding them with hair clips.
Maria L. | Verified Review
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
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
Peptide-Powered Hair Serum for Visibly Thicker, Fuller-Looking Hair
- Visibly thicker hair
- Less shedding
- Fuller, healthier-looking hair
Select quantity:
Includes 4 free bonuses
Black Friday discount auto-applied
Free
Shipping
FREE $4.95
Scalp
Massager
FREE $39.99
Hair Growth
Guide
FREE $29.99
Dyson
Airwrap™
CHANCE TO WIN
FREE BONUSES worth $74.93
Monthly VIP Benefits
- Unlock 45% OFF Forever
- Refill ships in 90 days at $32.99 each
Order by Month 00th AND GET 1 FREE
ClinicallyTested
DoctorFormulated
Non-ToxicIngredients
CancelAnytime
Third-Party Lab Tested. Manufactured in a Canadian FDA-registered facility.
Doctor formulated for fuller-looking hair
Women loving their hair again
Money-back guarantee:
See less shedding in 30 days or it's free.
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
★★★★★
17,756 reviewsBased on 17,756 reviews
What women mention most
Summary of verified reviews. Tap a chip to filter.
Photos from customers
L
Lauren P., 41
✓ Verified BuyerConcern: Temples
My temples look better
The thinning around my temples looks less noticeable now.
Was this helpful?
S
Sarah M., 42
✓ Verified BuyerLess shedding
I noticed less hair in the shower after a few weeks.
Was this helpful?
The Spa Dr. replied
Thank you for sharing your experience. Consistency is key — we're glad you're noticing progress.
J
Jennifer L., 48
✓ Verified BuyerFeels fuller at the roots
My hair looks a little fuller around the front.
Was this helpful?
A
Amanda K., 39
✓ Verified BuyerEasy to use
I like that it doesn't make my hair feel greasy.
Was this helpful?
N
Nicole B., 44
✓ Verified BuyerHelped after weight loss
I started shedding more after losing weight. This helped slow it down.
Was this helpful?
The Spa Dr. replied
Thank you for sharing your experience. Consistency is key — we're glad you're noticing progress.
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
Visibly Thicker, Fuller Hair,
Powered by Peptides
The water-based serum that reaches the root where others sit on top, so you shed less and grow back thicker. 300,000+ women already have.
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.
Made in USAPeptide powered30 day money back guarantee56 day clinical trialOver 17,000 5 star reviewsMade in USAPeptide powered30 day money back guarantee56 day clinical trialOver 17,000 5 star reviews
REAL WOMEN. REAL RESULTS.
300,000+ Women Have Fuller Hair Thanks To The Spa Dr.
First thing I noticed was less hair in the drain, maybe week 3 or 4. I'm on my 3rd bottle now and I'm seeing baby hairs along my hairline.
Sue R. | Verified Review
Around week 3 or 4, I saw fewer hairs clogging the drain. Now on my 10, I'm spotting tiny new hairs growing along my hairline.
Lea K. | Verified Review
I noticed less hair shedding on starters. Now, on my 3rd bottle, I'm starting to see almost a new hair line! I'm loving!!.
Kate C. | Verified Review
My part used to look so wide in photos. After two months of consistent use, the crown feels fuller and my ponytail actually has weight again.
Amanda T. | Verified Review
I was self-conscious about thinning at my temples. Halfway through bottle two, the edges filled in enough that I stopped hiding them with hair clips.
Maria L. | Verified Review
First thing I noticed was less hair in the drain, maybe week 3 or 4. I'm on my 3rd bottle now and I'm seeing baby hairs along my hairline.
Sue R. | Verified Review
Around week 3 or 4, I saw fewer hairs clogging the drain. Now on my 10, I'm spotting tiny new hairs growing along my hairline.
Lea K. | Verified Review
I noticed less hair shedding on starters. Now, on my 3rd bottle, I'm starting to see almost a new hair line! I'm loving!!.
Kate C. | Verified Review
My part used to look so wide in photos. After two months of consistent use, the crown feels fuller and my ponytail actually has weight again.
Amanda T. | Verified Review
I was self-conscious about thinning at my temples. Halfway through bottle two, the edges filled in enough that I stopped hiding them with hair clips.
Maria L. | Verified Review
First thing I noticed was less hair in the drain, maybe week 3 or 4. I'm on my 3rd bottle now and I'm seeing baby hairs along my hairline.
Sue R. | Verified Review
Around week 3 or 4, I saw fewer hairs clogging the drain. Now on my 10, I'm spotting tiny new hairs growing along my hairline.
Lea K. | Verified Review
I noticed less hair shedding on starters. Now, on my 3rd bottle, I'm starting to see almost a new hair line! I'm loving!!.
Kate C. | Verified Review
My part used to look so wide in photos. After two months of consistent use, the crown feels fuller and my ponytail actually has weight again.
Amanda T. | Verified Review
I was self-conscious about thinning at my temples. Halfway through bottle two, the edges filled in enough that I stopped hiding them with hair clips.
Maria L. | Verified Review
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
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
Peptide-Powered Hair Serum for Visibly Thicker, Fuller-Looking Hair
- Visibly thicker hair
- Less shedding
- Fuller, healthier-looking hair
Select quantity:
Includes 4 free bonuses
Black Friday discount auto-applied
Free
Shipping
FREE $4.95
Scalp
Massager
FREE $39.99
Hair Growth
Guide
FREE $29.99
Dyson
Airwrap™
CHANCE TO WIN
FREE BONUSES worth $74.93
Monthly VIP Benefits
- Unlock 45% OFF Forever
- Refill ships in 90 days at $32.99 each
Order by Month 00th AND GET 1 FREE
ClinicallyTested
DoctorFormulated
Non-ToxicIngredients
CancelAnytime
Third-Party Lab Tested. Manufactured in a Canadian FDA-registered facility.
Doctor formulated for fuller-looking hair
Women loving their hair again
Money-back guarantee:
See less shedding in 30 days or it's free.
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
★★★★★
17,756 reviewsBased on 17,756 reviews
What women mention most
Summary of verified reviews. Tap a chip to filter.
Photos from customers
L
Lauren P., 41
✓ Verified BuyerConcern: Temples
My temples look better
The thinning around my temples looks less noticeable now.
Was this helpful?
S
Sarah M., 42
✓ Verified BuyerLess shedding
I noticed less hair in the shower after a few weeks.
Was this helpful?
The Spa Dr. replied
Thank you for sharing your experience. Consistency is key — we're glad you're noticing progress.
J
Jennifer L., 48
✓ Verified BuyerFeels fuller at the roots
My hair looks a little fuller around the front.
Was this helpful?
A
Amanda K., 39
✓ Verified BuyerEasy to use
I like that it doesn't make my hair feel greasy.
Was this helpful?
N
Nicole B., 44
✓ Verified BuyerHelped after weight loss
I started shedding more after losing weight. This helped slow it down.
Was this helpful?
The Spa Dr. replied
Thank you for sharing your experience. Consistency is key — we're glad you're noticing progress.
Try it risk-free for 30 days.
With our money back guarantee.
Guaranteed Safe Checkout