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Hair Serum For Thicker Fuller-Looking Hair
A doctor-formulated serum made to address the signs of aging hair — like thinning, shedding, and scalp imbalance — without toxic ingredients.
Reduce thinning and shedding
Stronger, healthier hair
Reduces breakage
$49.00
$24.50
50% OFF | save $24.50
Fall Sale Special - FREE gift with your order!
Scalp Massager
FREE
$39.00
Save 50% on first order. After 1st-month trial, receive a 3-month supply $40 each.
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Pause or cancel anytime
Free shipping
Try it risk-free for 30 days. If you’re not totally in love with the product, we’ll refund you 100%.
Clinically
Tested
Tested
Doctor
Formulated
Formulated
Clean & Non-Toxic
Ingredients
Ingredients
Benefits
Helps reduce visible shedding and breakage for thicker, fuller-looking hair
Nourishes and rebalances the scalp microbiome to support healthy growth
Promotes stronger strands and a denser-looking hairline over time
Doctor-formulated with clean, non-toxic ingredients for safe, everyday use
Recommended usage
Apply serum directly to your scalp, sectioning wet or dry hair with the dropper tip as you go. Use enough serum to lightly cover areas of concern. Massage gently with fingertips for absorption. Leave in. Use once daily for best results.
Formulated without harsh chemicals
Parabens, phthalates, gluten, silicones, sulfates, synthetic fragrance.
Drug-free. Safe for color-treated and extension-friendly hair
Drug-free. Safe for color-treated and extension-friendly hair
FALL SALE
SELLING FAST
Hair Serum For Thicker Fuller-Looking Hair
A doctor-formulated serum made to address thesigns of aging hair — like thinning, shedding, and scalp imbalance — without toxic ingredients.
Reduce thinning and shedding
Stronger, healthier hair
Reduces breakage
$49.00
$24.50
50% OFF | save $24.50
Fall Sale Special - FREE gift with your order!
Scalp Massager
FREE
$39.00
Save 50% on first order. After 1st-month trial, receive a 3-month supply $40 each.
SHOP NOWPause or cancel anytime
Free shipping
Try it risk-free for 30 days. If you’re not totally in love with the product, we’ll refund you 100%.
Clinically
Tested
Tested
Doctor
Formulated
Formulated
Clean & Non-Toxic
Ingredients
Ingredients
Benefits
Helps reduce visible shedding and breakage for thicker, fuller-looking hair
Nourishes and rebalances the scalp microbiome to support healthy growth
Promotes stronger strands and a denser-looking hairline over time
Doctor-formulated with clean, non-toxic ingredients for safe, everyday use
Recommended usage
Apply serum directly to your scalp, sectioning wet or dry hair with the dropper tip as you go. Use enough serum to lightly cover areas of concern. Massage gently with fingertips for absorption. Leave in. Use once daily for best results.
Formulated without harsh chemicals
Parabens, phthalates, gluten, silicones, sulfates, synthetic fragrance.
Drug-free. Safe for color-treated and extension-friendly hair
Drug-free. Safe for color-treated and extension-friendly hair
AS SEEN ON:
Real Women. Real Results.
Linda
Fuller hair in 2 months? My photo says it all
"This serum is amazing. In two months my hair is fuller, it doesn't feel weighed down, and I can finally style it how I want again. The photo says it all!"
Jessica
A lifesaver for postpartum shedding
"The postpartum hair loss hit me hard and was honestly freaking me out. I'm so relieved this started working in about 6 weeks. Seeing less hair fall out feels like I'm finally myself again."
Susana
Those sparse areas look so much fuller
"The hair on the sides of my head was so thin and fragile... After 3 months, you can see the difference, those sparse areas look so much fuller!"
Stop Hiding Thinning Hair:
Start Loving How You Look Again!
No woman should feel embarrassed by shedding, thinning, or a visible scalp. You deserve to feel confident — with every strand.
That’s why we created one of the most advanced, doctor-formulated serums to reduce shedding, boost fullness, and restore your hair’s natural beauty from the root up.
That’s why we created one of the most advanced, doctor-formulated serums to reduce shedding, boost fullness, and restore your hair’s natural beauty from the root up.
Visibly fuller and thicker-looking hair
Enjoy a healthier-looking scalp
Reduce the look of visible scalp
For every hair type
Clinically-Backed Results
Saw hair volume after just 56 days*
Noticed less hair loss within 56 days*
Reported hair thickness over time.*
*Based on a Clinical Study with 33 participants over 56 days
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Why Thousands of Women Have Switched to This
Powerful Clean Ingredients
Doctor-Formulated powerful blend of clean, non-toxic and effective ingredients, each chosen for their ability to promote healthier and thicker-looking hair.
PEPTIDES
Support the appearance of fuller and healthier-looking hair
RED CLOVER FLOWER EXTRACT
Rich in bioactive compounds, Promote a thickness and fuller hair appearance
PEA SPROUT EXTRACT
Rich in phytonutrients, promotes fuller and thicker-looking hair
CENTELLA ASIATICA (GOTU KOLA)
A soothing herb that supports healthier-looking hair
Full Ingredient list
Water, Pentylene Glycol, Propanediol, Gluconodeltalactone, Niacinamide, Sodium Citrate, Acetyl Tetrapeptide-3, Trifolium Pratense (Clover) Flower Extract, Pisum Sativum (Pea) Sprout Extract, Cucurbita Pepo (Pumpkin) Seed Extract, Centella Asiatica (Gotu Kola) Extract, Panax Ginseng Root Extract, Macrocystis Pyrifera (Kelp) Extract, Glycerin, Butylene Glycol, Dextran, Sodium Benzoate, Citric Acid.
We’re Serious About Quality
Full Ingredients' list
Water, Aloe Leaf Juice Powder*, Pineapple Fruit Extract*, Acerola Cherry Fruit Extract*, Green Algae Extract*, Pichia/Resveratrol Ferment Extract, Sodium Hyaluronate, Olive Leaf Extract*, Rosemary Leaf Extract*, Bergamot Fruit Oil*, Ylang Ylang Flower Oil*, Mandarin Peel Oil*, May Chang Fruit Oil*, Amethyst Powder, Pullulan, Lysolecithin, Sclerorium Gum, Xanthan Gum, Phytic Acid, Citric Acid, Gluconolactone, Sodium Benzoate, Calcium Gluconate, Citral, Limonene, Linalool.
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Easy to Use In 2 Simple Steps
Drop, massage, and glow
Simply apply 2-3 drops directly to your scalp, then massage gently. It’s a targeted, no-mess ritual for fuller-looking hair.
Ready to go with just 2-3 drops
Formulated by the renowned Dr. Cates
"We developed perfectly balanced formulas containing my favorite clean, safe, organic & effective ingredients. It is the only product I know that uses them in the right dosage and without being combined with potentially harmful chemicals.”
2-TIMES BEST-SELLING AUTHOR
BOARD-CERTIFIED NATUROPATHIC DOCTOR
AS SEEN ON THE DOCTORS, FOX & EXTRA
Raving Reviews
4.6/5 17,756+ Reviews
Try it risk-free for 30 days.
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Frequently Asked Questions
How should I use this Hair Serum?
For optimal results, apply the Hair Serum daily. Dr. Cates recommends using it once in the morning and once in the evening. Simply part your hair into sections, apply a few drops directly onto the scalp, and gently massage with your fingertips to support better absorption. It takes just a couple of minutes to complete.
Is this Hair Serum fragrance-free?
Yes, our Hair Serum is completely fragrance-free. We've carefully crafted this formula to focus on supporting the appearance of you hair and scalp without the potential irritation that fragrances can cause. Enjoy a clean, natural experience that prioritizes your hair and scalp’s comfort.
Can I use this Hair Serum if I have sensitive skin?
Absolutely. Dr. Cates has designed this Hair Serum to be gentle yet effective for all scalp types, including sensitive skin. However, if you’re concerned, we recommend performing a patch test on the inside of your elbow to ensure compatibility with your skin.
How long will it take to see results?
Results may vary depending on the individual, but many of our users notice a reduction in the appearance of hair shedding and a healthier-looking scalp within the first few weeks. For best results, consistent use over 4-8 weeks is recommended.
What ingredients are in this hair serum?
Water, Pentylene Glycol, Propanediol, Gluconodelta- lactone, Niacinamide, Sodium Citrate, Acetyl Tetrapeptide-3, Trifolium Pratense (Clover) Flower Extract, Pisum Sativum (Pea) Sprout Extract, Cucurbita Pepo (Pumpkin) Seed Extract, Centella Asiatica (Gotu Kola) Extract, Panax Ginseng Root Extract, Macrocystis Pyrifera (Kelp) Extract, Glycerin, Butylene Glycol, Dextran, Sodium Benzoate, Citric Acid.
Is this product safe for color-treated hair?
Yes, our Hair Serum is safe for color-treated hair. Its gentle formula is designed to nourish and support your hair's appearance without stripping or fading color.
Is the Hair Serum gluten and soy-free?
Yes, our Hair Serum is both gluten-free and soy-free, making it suitable for those with sensitivities to these ingredients.
What is the shelf life of the Hair Serum?
Our Hair Serum has a shelf life of 2 years when unopened. Once opened, it should be used within 12 months to ensure maximum efficacy and freshness.
Do you offer refunds?
Yes, we stand by the quality of our products. If you're not completely satisfied with your purchase, you can request a refund within 30 days of the ship date. Please contact our customer service team for assistance.
Will the Hair Serum leave my hair greasy?
No, our Hair Serum is formulated to be lightweight and non-greasy, ensuring your hair feels natural and clean after application.
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