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Fine Hair

GRO Hair Serum

4.4
Rated 4.4 out of 5 stars
5,535 Reviews

#1 Prestige Hair Serum* for Thinning & Shedding

A plant-powered, clinically tested and scientifically proven serum that reduces shedding and thinning with visible results in as soon as 3 months.**

  • Reduces shedding and helps prevent hair thinning
  • Supports visibly fuller, healthier hair over time
  • Strengthens strands while promoting scalp health

Perfect for: Moderate to severe hair loss and thinning
Hair Concerns: Stress-related hair loss, post-partum, menopause, aging, medical conditions, harsh styling

One Time Purchase
For best results, we recommend 3-6 months of consistent use
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  • Reduces shedding and helps prevent hair thinning
  • Supports visibly fuller, healthier hair over time
  • Strengthens strands while promoting scalp health

There’s Power in Numbers

Up to 90%

reduction in signs of shedding**

Up to 56%

increase in appearance of hair density**

93%

saw less shedding†

90%

saw an improvement in appearance of their hair†

83%

said their hair was stronger and more resilient†

#1 Prestige Hair Serum* for Thinning & Shedding

Vegamour’s plant-powered, clinically tested solutions are designed to deliver real, visible results — because it’s not just about hair, it’s about feeling like yourself again.

Our Standards

  • Check

    Clinically Tested

  • Check

    Science-Backed

  • Check

    Trusted by Experts

  • Check

    Vegan

  • Check

    Clean

  • Check

    Cruelty-Free

See It to Believe It

Real women, real results, real confidence.

Based on consistent use for at least 90 days. Individual results may vary.

Based on consistent use for at least 90 days. Individual results may vary.

How to Use GRO Hair Serum

Visibly fuller, healthier hair in as soon as 3 months.**

Transform Your Hair & Your Confidence

With daily use of GRO Hair Serum, you may begin to notice:

Your GRO Timeline

  • Month 1

    Less breakage, with a healthier, more hydrated scalp**

  • Month 2

    Thicker, fuller hair with

    noticeable improvement**

  • Month 3

    Visibly less shedding and more resilient hair**

  • Month 4+

    Ongoing results and

    unmatched confidence

The Viral Hair Serum Trusted by Millions

4.4
Rated 4.4 out of 5 stars
Based on 5,535 reviews
Total 5 star reviews: 3.8k Total 4 star reviews: 972 Total 3 star reviews: 375 Total 2 star reviews: 172 Total 1 star reviews: 221
5,535 reviews
  • Megan M.
    Verified Buyer
    Reviewing
    GRO Hair Serum
    I recommend this product
    Age Range 35-44
    What is your hair length? Short
    What are your concerns? Thinning hair, Hair loss from hormonal changes (incl postpartum), Bald spots, Dry or damaged hair, Overall health and wellness (sleep / nutrition)
    What is your hair type? Thick, Wavy, Dry, Color Treated
    How often are you using the product? 5 - 6 times per week
    How long have you been using the product? 30 days (1 month)
    What improvements have you noticed? Less shedding, Improved volume/body
    Rated 5 out of 5 stars
    2 hours ago
    Like it so far

    Only 1 month in but happy with how my hair feels. The smell is mild, it's easy to apply.

  • Amanda R.
    Verified Buyer
    Reviewing
    GRO Hair Serum
    I recommend this product
    Age Range 35-44
    What is your hair length? Medium
    What are your concerns? Thinning hair, Hair loss prevention, Hair loss from hormonal changes (incl postpartum)
    What is your hair type? Fine, Chemically Treated, Wavy, Normal
    How often are you using the product? Every day
    How long have you been using the product? 150 days (5 months) or more
    What improvements have you noticed? Hair growth, Improved volume/body, Hair thickness, Easy to incorporate in daily routine, Improved overall hair health
    Rated 4 out of 5 stars
    2 days ago
    It works slowly but surely

    It works slowly but surely. I have fine long hair and it has thinned throughout the years. I use the GRO serum everyday after I wash my hair for about 1 year now, in addition to women's whole foods multivitamin and biotin supplement. I continue to see noticable growth around my hairline. I'll continue to use.

  • Heather N.
    Verified Buyer
    Reviewing
    GRO Hair Serum
    I recommend this product
    Age Range 25-34
    What is your hair length? Medium
    What are your concerns? Hair loss from hormonal changes (incl postpartum), Dry or damaged hair
    What is your hair type? Fine, Dry, Color Treated, Wavy, Curly
    How often are you using the product? Every day
    How long have you been using the product? 150 days (5 months) or more
    What improvements have you noticed? Hair thickness, Hair growth, Hair length
    Rated 5 out of 5 stars
    2 days ago
    Saved my hair!

    I was experiencing hair loss after having surgery, and it helped it to grow back in fuller than ever before! I definitely recommend!!

    Don’t mind the last picture, I need to go get it trimmed. Haha

  • Nancie
    Reviewing
    GRO Hair Serum
    Rated 3 out of 5 stars
    3 days ago
    3 Stars

    Product leave somewhat of a film and clean hair, not able to evaluate the product as of yet.

  • Franci B.
    Verified Buyer
    Reviewing
    GRO Hair Serum
    I recommend this product
    Age Range 65+
    What is your hair length? Short
    What are your concerns? Thinning hair, Bald spots, Hair loss prevention
    What is your hair type? Fine
    How often are you using the product? 5 - 6 times per week
    How long have you been using the product? 150 days (5 months) or more
    What improvements have you noticed? Less shedding, Hair growth
    Rated 4 out of 5 stars
    3 days ago
    A work in progress

    While this serum hadn’t restored my hair to complete fullness yet my stylist confirmed she’s seeing new growth. Plus I’m not seeing so many lost hairs when I shampoo.

    So progress is why I keep reordering.

  • *Based on 2024 USA unit sales of GRO Hair Serum. Source: YipitData
  • **Based on a 120-day independent, third-party clinical study with 40 participants using GRO Hair Serum once daily.
  • †Based on a 120-day consumer perception study of 40 participants using GRO Hair Serum once daily.
  • *Based on a 120-day independent, third-party clinical study with 40 participants using GRO+ Advanced Hair Serum once daily.
  • **Based on a 120-day consumer perception study of 40 participants using GRO+ Advanced Hair Serum once daily.
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