Before & After

Before & After

Melanie before Re:GRO Anti-Thinning Scalp Serum versus after 12 weeks of use*

*Recommended for best results

Before
After

Frequently Asked Questions

Who is this set for?

Ideal for anyone with 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 pregnant or breastfeeding, consult your doctor before using the scalp serum.

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.

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.

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.

What else should I pair it with?

For best results, you want to use these three together. After Shampoo and Conditioner, use the serum 4×/week for 12 weeks to help hair appear thicker, stronger, and more resilient. In a 90-day clinical study, 97% of participants reported less breakage and shedding.*

*Clinical Study: 30+ panelists used Re:GRO™ Scalp Serum, Shampoo & Conditioner for 90 days. Third Party Verified Clinic. USA 2025.

NO SYNTHETIC FRAGNANCE
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98%+ CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH 100% PCR PLASTIC
VEGAN
NO SYNTHETIC FRAGNANCE
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98%+ CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH 100% PCR PLASTIC
VEGAN
NO SYNTHETIC FRAGNANCE
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98%+ CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH 100% PCR PLASTIC
VEGAN
NO SYNTHETIC FRAGNANCE
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98%+ CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH 100% PCR PLASTIC
VEGAN
NO SYNTHETIC FRAGNANCE
FOR ALL HAIR TYPES
CRUELTY-FREE (LEAPING BUNNY CERTIFIED)
SULFATE, SILICONE, PARABEN, HORMONE DISRUPTOR & PHTHALATE FREE
98%+ CLEAN, NATURALLY DERIVED INGREDIENTS
MADE WITH 100% PCR PLASTIC
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.

Value icon

WOMEN FOUNDED & LED

Value icon

SULFATE, PARABEN, & SILICONE FREE

Value icon

PCR PLASTIC BOTTLES

Value icon

for all hair types

Value icon

MIXED & POURED IN CALIFORNIA

Value icon

vegan & cruelty free

4.5
Rated 4.5 out of 5 stars
Based on 169 reviews
Total 5 star reviews: 115 Total 4 star reviews: 38 Total 3 star reviews: 12 Total 2 star reviews: 1 Total 1 star reviews: 3
91%would recommend these products
169 reviews
  • L
    LyssLyss52
    Verified Buyer
    4 months ago
    Reviewing
    Re:GRO Anti-Thinning Scalp Serum
    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!

  • W
    Weezy
    Flag of United States
    Verified Buyer
    4 months ago
    Reviewing
    Re:GRO Anti-Thinning Conditioner
    Rated 5 out of 5 stars
    Great for Postpartum Hair Loss

    I'm 5 months postpartum and have had a lot of hair loss but since using this product I've noticed a lot less shedding! Also seems to be very natural ingredients and I do enjoy the scent and color it's very earthy but might be too much for some people.

  • K
    Kenny
    Flag of United States
    Verified Buyer
    4 months ago
    Reviewing
    Re:GRO Anti-Thinning Conditioner
    Rated 5 out of 5 stars
    The best conditioner

    One of the best I've ever tried. I like how it's made with natural ingredients and it helps prevent thinning hair. The smell is really nice and not overpowering.

  • O
    Olivia
    9 months ago
    Reviewing
    Re:GRO Anti-Thinning Scalp Serum
    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!

  • DM
    Dana M.
    Verified Reviewer
    12 months ago
    Reviewing
    Re:GRO Anti-Thinning Shampoo
    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!

  • R
    Roxanne
    3 weeks ago
    Reviewing
    Re:GRO Anti-Thinning Conditioner
    Rated 5 out of 5 stars
    5 Stars

    Great shampoo!

  • M
    Mariela
    4 weeks ago
    Reviewing
    Re:GRO Anti-Thinning Scalp Serum
    Rated 5 out of 5 stars
    5 Stars

    I've only used it twice a already feel the difference in my hair! Feels healthier and thicker than before!! I'll leave another review when I've used it for a month.

  • L
    Lex
    Flag of United States
    Verified Buyer
    1 month ago
    Reviewing
    Re:GRO Anti-Thinning Conditioner
    Rated 5 out of 5 stars
    Amazing conditioner

    I've been using this anti-thinning conditioner for a few weeks now, and I'm honestly impressed with the results so far. My hair tends to shed a lot, especially when detangling, but I've noticed significantly less breakage since adding this to my routine. It leaves my hair feeling soft, hydrated, and much easier to manage without weighing it down. One thing I really like is that it doesn't make my scalp feel greasy or heavy, which is something I've struggled with when trying other "thickening" products. My hair also looks a bit fuller and healthier overall, which gives me more confidence when styling. The only downside is that it takes consistent use to really see results, so you have to be patient. But if you're dealing with thinning or shedding and want something that supports healthier hair over time, this is definitely worth trying.