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The Spa Dr.® Hair Serum
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Includes 4 free bonuses
Free
Shipping
FREE $4.95
Scalp
Massager
FREE $39.00
Hair Growth
Guide
FREE $22.99
Glow
Boost
FREE $27.00
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A peptide-powered, water-based serum that penetrates the scalp to support visibly thicker, fuller- looking hair — without harsh chemicals, silicones, or oils.
Clinically Tested • Doctor Formulated • Non-Toxic Ingredients
Money-back guarantee:
See less shedding in 30 days or it's free.
300,000+ people have fuller hair thanks to The Spa Dr.
"The first thing I noticed was way less shedding. That alone made me want to keep using it."
– Lea
"My hairstylist couldn't believe the difference."
– Linda
"I finally stopped dreading the shower."
– Jessica
"I finally feel comfortable wearing my hair back again."
– Karen
"Not gonna lie, I almost stopped using it. But a few months later... my hair looks so much better. Totally worth the wait."
– Amy
Third-party Tested
Clinically proven to increase hair thickness
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 33 participants over 90 days.
How it works
Rebuild the root. Stop the thinning.
Our peptide serum strengthens the anchoring structure so hair stays, grows, and thrives.
Shedding starts at the root
When the follicle becomes stressed, hair loses its strong foundation and is more likely to shed before completing its growth cycle.
Benefits of our peptide powered Hair serum
Bring Back Thicker, Fuller-Looking Hair
Benefits of our peptide powered Hair serum
Bring Back Thicker, Fuller-Looking Hair
Discover the Hair Care science behind this product
Reinforces the protein anchoring structure that holds each strand in place — so hair stays rooted longer and sheds less.*
We're Serious About Quality
Customer Reviews
Based on 154 Reviews
Daphne Sinclair
Verified BuyerMy hair is thicker!
My hair looks fuller after 3 months, and my scalp doesn't itch anymore. It really works.
Isabella White
My hair is growing!
My hair wouldn't grow with anything. Now it's finally thicker and longer.
Emma Brooks
I'm seeing way less hair in my brush!
This helped with shedding and made my scalp feel so much better.
Olivia Hart
Verified BuyerScalp feels healthier
I started noticing less fall-out within a few weeks of consistent use.
Sophia Reed
Noticeable difference
Easy to apply and leaves my roots feeling stronger day by day.
Mia Collins
Finally something that works
Great texture, absorbs quickly, and fits into my nightly routine.
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