Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
Re:GRO Anti-Thinning Shampoo
4.5
Rated 4.5 out of 5 stars
61
4.5 | 61 reviews

Re:GRO Anti-Thinning Shampoo

For Fullness & Length  • 16.5 oz / 468 g

A clean, scalp-boosting shampoo powered by Biotin, Caffeine, Zinc, Rosemary, and Saw Palmetto to strengthen strands, support scalp health, and promote fuller-looking hair—without harsh ingredients.
Helps strengthen & reduce breakage
Helps strengthen & reduce breakage
Helps nourish scalp & reduce flakes
Helps nourish scalp & reduce flakes
Helps balance your scalp
Helps balance your scalp
DETAILS

Re:GRO Anti-Thinning Shampoo gently cleanses while nourishing both scalp and strands to help reduce breakage, flakes, and thinning over time. Designed to support a healthy scalp environment, the lightweight formula delivers essential nutrients that strengthen hair from root to tip without weighing it down.

Formulated with Rosemary to stimulate follicles and support growth, Zinc to help reduce flakes and balance the scalp, Caffeine to energize the scalp and reduce thinning, Biotin (Vitamin B7) to strengthen strands and minimize breakage, and Saw Palmetto to help block DHT and reduce shedding. Safe for color-treated and chemically treated hair and ideal for daily use as the foundation of your Re:GRO routine.
KEY INGREDIENTS
  • Rosemary - Stimulates follicles, promotes scalp health & hair growth
  • Zinc - Reduces flakes, balances scalp environment
  • Caffeine - Stimulates scalp, encourages growth, reduces thinning
  • Biotin (Vitamin B7) - Strengthens strands, reduces breakage & brittleness
  • Saw Palmetto - Blocks DHT to reduce shedding & fallout

Aqua/Water/Eau, Aloe Barbadensis Leaf Juice*, Cocamidopropyl Hydroxysultaine (Coconut Derived), Sodium Methyl 2-Sulfolaurate (Coconut Derived),  Disodium 2-Sulfolaurate (Coconut Derived), Sodium Lauroyl Methyl Isethionate (Coconut Derived), Glycerin, Ricinus Communis (Castor) Seed Oil*, Cucurbita Pepo (Pumpkin) Seed Oil, Nigella Sativa Seed Oil, Argania Spinosa (Argan) Kernel Oil*, Persea Gratissima (Avocado) Oil, Biotin, Tocopherol, Rosmarinus Officinalis (Rosemary) Leaf Extract*, Urtica Dioica (Nettle) Extract, Zinc Gluconate, Caffeine, Saccharomyces/Xylinum/Black Tea Ferment, Serenoa Serrulata Fruit Extract, Panthenol (Vitamin B5), Lactobacillus Ferment (probiotic),  Adenosine, Potassium Sorbate, Sodium Benzoate, Ethylhexylglycerin, Lactic Acid (vegan), Guar Hydroxypropyltrimonium Chloride, Triethyl Citrate

*Certified Organic Ingredient

SEE ALL SEE LESS
SCENT

Smells like fresh rosemary, naturally. Clean, herbal, a little wild around the edges. Scalp Serum: Fragrance free. Totally clean, vegan, and cruelty-free, with zero junk—no parabens, phthalates, preservatives, or synthetic fragrance and dyes. Just smells you’d actually find in nature.
HOW TO USE

Lather a quarter-size (or more!) dollop between palms and massage in, concentrating on your scalp and roots. Let it sit for 1-2 mins. Rinse. Follow with Re:GRO™ Anti-Thinning Conditioner to complete the magic.
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.

Complete the Routine

Re:GRO Anti-Thinning Scalp Serum

Re:GRO Anti-Thinning Conditioner

Frequently Asked Questions

How does it support scalp and hair health?

Zinc helps reduce flakes and balance your scalp. Caffeine energizes follicles to encourage growth and reduce thinning. Biotin strengthens strands and promotes growth, while Saw Palmetto helps block DHT to keep hair stronger, longer.
Who is this shampoo for?

Ideal for thinning hair, weak or brittle strands, stress- or postpartum-related shedding*, or anyone starting a scalp care routine. Safe for color-treated and chemically treated hair. *If you pair with Re:GRO™ Scalp Serum, consult your doctor if you are pregnant or breast feeding.

How clean is this formula?

Actually clean. 99% naturally derived, sulfate, paraben, and silicone-free. Vegan, cruelty-free, and free from irritants, hormone disruptors, toxins, and synthetic fragrance.
Are there men’s and women’s versions?

Yes—only the scent differs. Women’s: Rosemary with sweet eucalyptus and garden basil undertones. Men’s: Fresh herbs with rosemary, basil, and nettle. Both are clean, vegan, and cruelty-free, with zero junk.
What other products should I use in my anti-thinning routine?

Works with any conditioner, but we pair with Re:GRO™ Anti-Thinning Conditioner and Re:GRO™ Anti-Thinning Scalp Serum for best results. In a 90-day clinical study, 97% of participants reported less breakage and shedding.*

*Clinical Study: 30+ panelists used Re:GRO™ Scalp Serum, Re:GRO™ Shampoo & Re:GRO™ Conditioner for 90 Days. Third Party Verified Clinic. USA 2025.
NO ARTIFICIAL FRAGRANCE OR SYNTHETIC DYES
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
MADE WITH 100% PCR PLASTIC
99% NATURALLY DERIVED INGREDIENTS
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
MADE WITH 100% PCR PLASTIC
99% NATURALLY DERIVED INGREDIENTS
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
MADE WITH 100% PCR PLASTIC
99% NATURALLY DERIVED INGREDIENTS
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
MADE WITH 100% PCR PLASTIC
99% NATURALLY DERIVED INGREDIENTS
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
MADE WITH 100% PCR PLASTIC
99% NATURALLY DERIVED INGREDIENTS
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

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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

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4.5
Rated 4.5 out of 5 stars
Based on 61 reviews
Total 5 star reviews: 38 Total 4 star reviews: 17 Total 3 star reviews: 5 Total 2 star reviews: 0 Total 1 star reviews: 1
92%would recommend this product
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61 reviews
  • DM
    Dana M.
    Verified Reviewer
    1 year ago
    Rated 5 out of 5 stars
    My Go-To Shampoo

    This has become my go-to shampoo! Not only does it smell amazing but it actually delivers on what it says it does...I have not had that much hair fall/ shedding since using this product ( a little over a month), my hair strands feel stronger and most importantly for me, my hair has more volume. Overall, my hair appears healthier (shiny, no frizz, volume). Highly recommend!

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  • J
    Jessicaf1
    Verified Buyer
    3 days ago
    Rated 4 out of 5 stars
    Good shampoo

    I have been using the Re-Gro Anti-Thinning Shampoo and have been pleased with the results. The shampoo doesn't leave my hair dry and the formula is gentle, has a pleasant scent, and leaves my hair soft. While hair growth products require consistent use and time, I have noticed less shedding, which is amazing as I was suffering from post-partum hair loss.

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  • K
    Kate
    Verified Buyer
    4 days ago
    Rated 3 out of 5 stars
    dandruff

    I didn't have dandruff before, but after about 3 uses of this shampoo, I started noticing flakes. I stopped using it immediately.

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  • M
    Mac
    Verified Buyer
    4 days ago
    Rated 4 out of 5 stars
    I would buy this product!

    I would recommend this product to anyone looking to add moisture to their hair! This product feels and smells like clean ingredients and left my hair feeling so moisturized! The only thing I did not like is when I wet my hair and added the shampoo there is no lather to it! Leading me to have to use even more. No big deal. The results were a lot better than I expected!

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  • J
    Jesse
    Verified Buyer
    4 days ago
    Rated 5 out of 5 stars
    I would buy this product again

    I love this product and I can tell you the difference after I used it. The scent is amazing and is for all type of hair.

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  • J
    Jac
    Verified Buyer
    4 days ago
    Rated 5 out of 5 stars
    Excellent shampoo

    This is probably one of the best shampoos I've used in a while. The scent isn't too overwhelming. The only con is that the instructions require you to leave the shampoo on for 1-2 minutes prior to washing off. I used the product as instructed. One thing I noticed is that this shampoo doesn't dry out my hair or make it rough like other shampoos do. It doesn't strip my hair and feels clean at the same time. One time I even forgot to put conditioner on afterward and my hair was still smooth. I don't usually get this type of result with other shampoos. After using this for a week I can't say if it helps with hair regrowth but it definitely made my hair feel healthier, smoother and have more volume. Overall I'm extremely pleased with this shampoo and I'll definitely buy it again.

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  • LH
    Lisa H.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    Amazing

    My husband is using this and so far it smells amazing and his hair looks fantastic

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  • K
    Kathy
    3 months ago
    Rated 3 out of 5 stars
    3 Stars

    I like the scent of the shampoo and conditioer but feel it dries my hair out. Not sure I can use this long term for my hair loss issues. I already have dry hair to begin with. This probably wont be a issue for someone with normal hair.

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