Home / Hair / Re:GRO Anti-Thinning Scalp Serum

Re:GRO Anti-Thinning Scalp Serum

4.6
Rated 4.6 out of 5 stars
90
4.6 | 90 reviews
$ 19.99
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Re:GRO Anti-Thinning Scalp Serum
Home / Hair / Re:GRO Anti-Thinning Scalp Serum

Re:GRO Anti-Thinning Scalp Serum

4.6
Rated 4.6 out of 5 stars
90
4.6 | 90 reviews
$ 19.99
Free Shipping over $40+30-day free returns

A 30-day supply of our clinically proven* formula for longer, stronger hair—powered by 5% Capixyl™

Why You'll Love It
100% of participants saw measurably fuller, thicker hair in just 48 hours.*
97% reported less breakage and shedding*
94% reported fuller, more voluminous hair*
Is this for me
For those experiencing thinning, fine strands, split ends, or postpartum shedding.
Why it works

5% Capixyl™
The holy grail for fuller, stronger hair. Made from clinically proven*, high-performance natural ingredients that help boost thickness at the root—for all the results of minoxidil without major side effects.

Biotin & Caffeine
A dream duo that kicks slow-growing scalps into gear while strengthening fine, brittle strands

Saw Palmetto
Helps block DHT—the hormone linked to hair loss—so hair grows back stronger

Rosemary, Castor & Pumpkin Seed Oils
Nourish the scalp & strengthen strands while protecting against split ends & breakage

Rice Silica
An instant root lift that volumizes & boosts shine

Clinically studied: 30 panelists used Re:GRO™ Anti-Thinning regimen as directed for 90 days. Fullness, volume, thickness, density, strength, breakage, and growth rate measured via instrumental analysis; improvements observed as early as 48 hours. Results vary by metric and individual.

*Source: Capixyl™ Lucas Meyer Cosmetics by Clariant
SHIPPING & RETURNS

Enjoy free shipping on all orders over $40. Orders ship on business days, with 2 to 3 days for processing and 5 to 7 days for delivery.

We offer free returns within 30 days. Items must be unopened and in their original packaging.
full ingredient list

Aqua/Water/Eau, Capixyl™, Aloe Barbadensis Leaf Juice, Panthenol (Vitamin B5), Biotin, Caffeine, Rosmarinus Officinalis (Rosemary) Leaf Oil1, Adenosine, PhytoCellTec™, Cucurbita Pepo (Pumpkin) Seed Oil, Serenoa Serrulata Fruit Extract, Malus Domestica Fruit Cell Culture Extract, 1, 2-Hexanediol, Caprylyl Glycol, Xanthan Gum, Sodium Benzoate, Ricinus Communis (Castor) Seed Oil, Silica, Ethylhexylglycerin, Caprylyl/Capryl Glucoside, Carbomer
SCENT

Free of added or synthetic fragrances. Made with calming botanical extracts that naturally give off a subtle fragrance—there to soothe, never to scent.

Our fragrances are formulated with up to 94% natural ingredients per ISO 16128 and are gentle enough for even the most sensitive scalps & skin.
Vegan
Vegan
Cruelty Free
Cruelty Free
Sulfate & silicone free
Sulfate & silicone free
Paraben & phthalate free
Paraben & phthalate free
No artificial fragrance
No artificial fragrance
No synthetic dyes
No synthetic dyes

Pairs well with
4.5
Rated 4.5 out of 5 stars
113

Re:GRO Anti-Thinning Conditioner

STRONGER HAIR FROM ROOT TO TIP

$ 11.99
4.4
Rated 4.4 out of 5 stars
124

Re:GRO Anti-Thinning Shampoo

STRONGER HAIR FROM ROOT TO TIP

$ 11.99
Re:GRO Anti-Thinning Scalp Serum
4.6
Rated 4.6 out of 5 stars
90
 4.6 | 90 reviews
$ 19.99

Frequently Asked Questions

What results will I see instantly vs. over time?

Instantly: your scalp feels refreshed and energized, and hair looks lifted at the roots. Over time: with regular use 4x/week for 12 weeks, hair appears thicker, stronger, and more resilient, with reduced shedding and breakage.
Who is this for?

This serum is great for thinning hair, weak or brittle strands, stress- or postpartum-related shedding, or tension from tight hairstyles like braids, buns, or ponytails. Perfect if you’re starting a scalp care routine and safe for color-treated, chemically treated hair, and extensions.*

*Consult your doctor if pregnant or breastfeeding.
What’s the difference between the Women’s and Men’s Scalp serum?

 It's the same formula. We made the best serum we possibly could and it works for everyone. We just offer it in men's and women's versions because that's how most people shop, but the actual product is identical. Same great results across the board!
How clean is this formula?

Actually clean. Really natural. Totally transparent. This serum is 98% naturally derived and free from irritants, hormone disruptors, toxins, and synthetic fragrance.
How does it help with hair strength and shedding?

Key ingredients like 5% Capixyl®, caffeine, biotin, saw palmetto, and botanical oils help nourish the scalp, support stronger follicles, reduce shedding, and give hair a fuller, healthier look over time. In a 90-day clinical study, 97% of participants reported less breakage and shedding.*
Can it be used with any wash routine?

Yes! It works with any shampoo and conditioner, but for best results, we recommend pairing it with our Re:GRO™ Anti-Thinning Shampoo & Conditioner. Lightweight and non-sticky, it won’t weigh hair down and suits all hair types.
NO ARTIFICIAL FRAGRANCE OR SYNTHETIC DYES
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98% CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH RECYCLED PLASTIC
SAFE FOR COLOR TREATED HAIR
NATURALLY SCENTED
VEGAN
NO ARTIFICIAL FRAGRANCE OR SYNTHETIC DYES
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98% CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH RECYCLED PLASTIC
SAFE FOR COLOR TREATED HAIR
NATURALLY SCENTED
VEGAN
NO ARTIFICIAL FRAGRANCE OR SYNTHETIC DYES
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98% CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH RECYCLED PLASTIC
SAFE FOR COLOR TREATED HAIR
NATURALLY SCENTED
VEGAN
NO ARTIFICIAL FRAGRANCE OR SYNTHETIC DYES
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98% CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH RECYCLED PLASTIC
SAFE FOR COLOR TREATED HAIR
NATURALLY SCENTED
VEGAN
NO ARTIFICIAL FRAGRANCE OR SYNTHETIC DYES
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98% CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH RECYCLED PLASTIC
SAFE FOR COLOR TREATED HAIR
NATURALLY SCENTED
VEGAN

KIND WORDS

What they said

Switched from Native!

I had to restock with your brand because it's sooo good!! Switched from Native shampoo/cond and loving California Naturals!!

@LILYSLOCALE

CLASSIC CLEAN SHAMPOO & CONDITIONER

INSTAGRAM

IT'S ALL GOOD

We’re California Naturals.
Clean, natural, everyday essentials that actually work.

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WOMEN FOUNDED & LED

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SULFATE, PARABEN, & SILICONE FREE

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PCR PLASTIC BOTTLES

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for all hair types

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MIXED & POURED IN CALIFORNIA

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vegan & cruelty free

Learn more
4.6
Rated 4.6 out of 5 stars
Based on 90 reviews
Total 5 star reviews: 62
Total 4 star reviews: 22
Total 3 star reviews: 5
Total 2 star reviews: 0
Total 1 star reviews: 1
96%would recommend this product
Write a Review (Opens in a new window)
90 reviews
  • L
    LyssLyss52
    Verified Buyer
    7 months ago
    Rated 5 out of 5 stars
    Great growth serum for color treated hair! All natural!!

    I always am weary of introducing new hair products since i dye my hair, but I do have breakage from the bleach. This serum is great! I use it when I do my slick backs, but it's not too sticky so you could use it on your cleaner hair days. I haven't seen too much growth yet as it's only been a few weeks, but I will continue to use it since it's so simple! I also have a friend who just finished chemo, and she's looking for clean products. Since this is all natural, she's also giving it a try!

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  • O
    Olivia
    1 year ago
    Rated 5 out of 5 stars
    Changed my hairline!!!

    I've struggled with hair thinning & loss around my hairline, and using this a few times per week has completely changed the game for my hair growth around my hairline. It's thicker, and I've seen re-growth even in the bald spots! Having something affordable and effective is SO hard to find and this actually worked. Be sure to keep up with it and you will see results!

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  • M
    Mel
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    I would by this product again

    I love this brands. This serum is so good I really enjoyed how affordable this product is.

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  • R
    Rox36330
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Works very well

    I've been using the California Naturals Re:GRO Anti-Thinning Scalp Serum consistently, and I'm really impressed so far. It's lightweight, doesn't leave my hair feeling greasy, and absorbs into my scalp quickly. I also love that it contains ingredients like rosemary oil, biotin, and caffeine without sulfates, parabens, or silicones. My hair feels healthier, and I've noticed less shedding when I brush and wash it. Hair growth takes time, but this serum has become a staple in my routine, and I'm excited to keep using it. Definitely worth trying if you're looking to support fuller, healthier-looking hair!

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  • A
    Amber
    Verified Buyer
    2 weeks ago
    Rated 4 out of 5 stars
    Clean ingredients

    I'm super picky about what products I use. This product has clean ingredients which was a huge plus for me.

    Was this helpful?
  • K
    Kira
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Hair Growth

    I've been using this product for about a month. Its easy to apply due to its design with tip. Doesn't leave your hair greasy which I love. Does make your scalp feel a little itchy which I assume that's what is supposed to do to stimulate hair growth. I haven't seen any hair growth but i would assume you need more than a month to see growth. I would def buy another bottle to see full results.

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  • P
    prncss08
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    I would buy this product again

    I used this product every other day.y scalp loves this product. I like that there is a little bit of a refreshing feel when you apply it. It doesn't leave a greasy residue; the scalp just soaks it up and I can go about my typical styling. I am now adding this product to my hair care lineup

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  • D
    Deasy
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Amazing Product

    I am so in love with this ReGro Scalp Serum. This product meets my expectations. It works really well, and super easy to apply. To see the best result of this product is the consistency and the patient, it takes a while to see the result. But once you started, you can really really tell that this product gives the impact to your hair. I highly recommend this product to everyone.

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