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The Details

• Boosts hair growth from the roots and strengthens hair to reduce breakage

• Powered by Burgeon Up, Redensyl, and Capilia Longa to boost growth, add volume, and strengthen from the root

• Your scalp? Handled. Your hair? Not going anywhere

Ditch The Fuss!

Just The Good Stuff!

Burgeon Up 2% Japan

Burgeon Up - 2%
Stimulates and strengthens for visibly fuller, healthier growth

Redensyl® 2% Switzerland

Redensyl
Activates hair stem cells for denser, stronger growth

Capilia Longa™ 1% Spain

Capilia Longa
Reactivates growth, boosting hair thickness

Rosemary Oil

Rosemary
Encourages hair growth

Witness the Difference

Before

After

Before

After

Before

After

Numbers don’t lie!

New hair on average in 90 days

+ 0 *

New hair on average in 150 days

+ 0 *

Increased hair growth by*

+ 0 %*

Increased hair density by*

+ 0 %*

Burgeon Up 2%

BURGEON-UP is a plant-based hair care ingredient made from fresh watercress grown in Japan. What makes it special is R-spondin 1, a powerful protein that activates the roots of your hair follicles to spark visible hair growth.

What It Does?

BURGEON-UP works at a deep, cellular level to help bring thinning or weakened hair back to life. The secret? R-spondin 1, a protein known in regenerative medicine for its role in tissue repair. In hair science, it’s proven to activate outer root sheath cells—the foundation of hair follicles responsible for making thick, strong hair.

Award-Winning Ingredient
  • Finalist, in-cosmetics Asia 2019 – Best Ingredient
  • BSB Innovation Award 2020, 2nd Prize – Hair & Scalp Care
Backed by Science

In vitro studies (on human dermal papilla cells):

  • Increased R-spondin 1 secretion at 0.5–1% concentration
  • Suppressed DKK1 and IL-6, both linked to hair thinning caused by male hormones (DHT)

Ex vivo tests (on cultured human hair follicles):

    • Follicles treated with 1% BURGEON-UP showed longer growth over 5 days

In vivo clinical trial (40 men, twice-daily application for 6 months)

in total hair count compared to the control group

+ 0 %

hair growth rate

+ 0 %

in hair diameter

+ 0 %

Redensyl® 2%

Redensyl® stimulates hair growth, reduces hair fall, and increases hair density. Clinical studies have shown significant improvement in hair density and strength within 84 days of use.
What it does?

  • Hair Growth Stimulation

Redensyl® targets hair follicle stem cells and dermal papilla cells, key players in hair growth. It enhances stem cell proliferation and prevents apoptosis (cell death) of these cells, leading to healthier, denser hair.

  • Reduction of Hair Fall

Clinical studies showed that Redensyl reduced hair fall by up to 17% after 3 months of use. The product reactivated hair follicle stem cells and improved hair anchorage, significantly reducing daily hair loss.

  • Improvement in Hair Density

Redensyl demonstrated a +8% increase in hair density and a +9% increase in hair thickness after 3 months. Volunteers experienced visibly fuller hair, with over 85% showing positive results in clinical evaluations.

Award-Winning Ingredient
  • Silver in cosmetics Innovation Zone Best Ingredient Award 2014
Backed by Science
  • +10,200 hair on average in 3 months: better results than one hair transplantation procedure
  • Increased hair follicle growth by 214%
  • Increased hair density by 17%
  • New anagen hair growth by 9% to 20% in different age categories
  • Decreased skin irritation by 21%

Capilia Longa™ 1%

Capilia Longa is a high-performance ingredient made from turmeric plant stem cells. It’s designed to wake up tired hair follicles, reduce hair fall, and bring back fuller-looking hair naturally.

What it does?

This smart botanical ingredient works at the root level. It helps reactivate dormant hair follicles and provides them with the boost they need to start growing stronger, healthier strands. Think of it like a reset button for your scalp.

Capilia Longa encourages your scalp to produce the same growth signals it did when your hair was at its best. It supports the natural cycle of hair growth, making it easier for more hair to remain in the growth phase for longer.

  • Boosts natural growth signals in your scalp
  • Reactivates hair follicles that have stopped producing new strands
  • Helps reduce hair thinning and visible hair loss
  • Promotes thicker, denser, and healthier-looking hair
Award-Winning Ingredient
  • 2019 FINALIST BEAUTY INDUSTRY AWARDS
Backed by Science
  • In a 150-day study, it reduced hair loss by up to 89%
  • Increased hair density by up to 52%
  • Boosted the activity of key growth factors like VEGF, HGF, and FGF7 that are essential for hair regeneration
  • Safe for regular use—non-irritant, hypoallergenic, and gentle on skin

Source: PharCos, Vytrus Biotech, Induchem

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The COCKY Way

Drop it like it’s hot, straight onto your roots (or your beard, no judgment here)! Massage in a few drops and let it work its magic. Your hair will start looking thick, healthy, and ready to turn heads. Oh, and your beard? It’s about to get some serious love too, because why should your face miss out on all the good stuff?

Things That Need Notice

When?

AM & PM
AM & PM

Where?

Hair
Scalp

How?

Dry
Dry
Apply
Apply
Hair Massage
Massage

Visible Results In

Visible Results In
60 Days

Min. Usage

Min. Usage
180 Days

Cycle In

Cycle In
180 Days, 15 Days Break

Shelf Life

Shelf Life
18 Months
THE ONE Collection
THE ONE Collection
One Formula Many Benefits
Fragrance Free
No Added Fragrance
Microplastic Free
Microplastic Free
Sulphate & Paraben Free
Sulphate & Paraben Free
Clinically Precise Formulas
Clinically Precise Formulas
Dermatologically Tested
Dermatologically Tested
Cruelty Free & Ethically Sourced
Cruelty-Free & Ethically Sourced

Recommended Products

QUESTIONS? WE’VE GOT ANSWERS.

Frequently Asked
Questions

This serum is powered by Redensyl®,Capilia Longa™ and Burgeon Up, which reactivate hair follicles and support new hair growth. It also contains pea peptide, making it a true peptide serum for hair that strengthens strands and targets regrowth at the roots.

Absolutely. The One – Hair Serum is an excellent hair growth serum for men. Its blend of Redensyl®, Capilia Longa™, Burgeon Up and caffeine helps achieve thicker, fuller hair by reducing hair fall and supporting follicle health.

Yes, it delivers the results you’d expect from a rosemary serum for hair growth. Alongside rosemary benefits, Redensyl® and caffeine work together to reduce hair fall and encourage regrowth.

Redensyl® targets hair follicle stem cells, stimulating new hair growth and making your hair look denser and healthier over time.

Capilia Longa™ is a plant-based active that improves scalp health, hydrates, and encourages new hair growth, helping your hair become thicker and stronger.

For optimal results, use The One – Hair Serum daily. Consistent use helps improve hair thickness and density, making it a reliable hair growth serum for men.

No, the formula is lightweight and absorbs quickly, so you get all the benefits of a peptide serum for hair without any greasy residue.

Definitely. The combination of Redensyl®, Capilia Longa™, Burgeon Up, caffeine, rosemary oil and pea peptide works together to reduce hair fall and promote thicker, fuller hair.

Yes, whether your hair is straight, wavy, or curly, this hair growth serum for men is designed to work for every guy looking to improve hair health and regrowth.

Most users notice reduced hair fall and increased thickness within 6-8 weeks of daily use. Consistency is key to getting the best results from this rosemary serum for hair growth.

Test Reports
Add a review
The One Hair Serum The One Hair Serum
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4.2
Based on 13 reviews
5 star
39
39%
4 star
46
46%
3 star
15
15%
2 star
0%
1 star
0%
1-5 of 13 reviews
  1. Y
    Yash

    Not greasy

  2. P
    Pranav

    I’ve been consistent for a month and my hair feels stronger. Too soon for growth results though.

  3. R
    Rahul

    I like the dropper, easy to use without wasting product.

  4. K
    Kabir

    Doesn’t make my scalp greasy, that’s the best part for me

  5. S
    Sameer

    Still waiting to see results on hair growth but my hair texture has become softer

Product Information

Weight 150 g
Dimensions 5 × 5 × 11 cm
Quantity

30 ml
Ingredients List

Aqua, Burgeon up, Butylene Glycol, Caffeine, Capila Longa, Ethylhexylglycerin, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Hydrolyzed Wheat Protein, Panthenol, Pea Peptide, PEG-40 Hydrogenated Castor Oil, Pentavitin, Phenoxyethanol, Propanediol, Redensyl, Rosmarinus Officinalis (Rosemary) Leaf Oil, Sodium gluconate, Sodium Hyaluronate
Caution

Avoid contact with eyes & keep out of reach of children, For External use only, Patch test recommended before use

13 reviews for The One Hair Serum

  1. Kshitij –

    First impressions – smooth, not sticky or oily, science looks solid.. will write a follow up in sometime

  2. Angad –

    Love the packaging, specially the mat bottle and box. very nice

  3. Abhinav –

    It is a long term game but initial signs look promising. Using for my MAA, seeing some changes.

  4. Abhinav –

    Works

  5. Dhruv –

    Easy to use, no buildup my hair feels soft

  6. Hriday Yadav –

    I have curly hair and it’s so difficult to maintain them but this serum has improved my hair texture, have been using it for a month consistently

  7. Prakhar –

    Nice hair serum

  8. Deep –

    Yet to see any results but I like how it doesn’t make my hair greasy

  9. Sameer –

    Still waiting to see results on hair growth but my hair texture has become softer

  10. Kabir –

    Doesn’t make my scalp greasy, that’s the best part for me

  11. Rahul –

    I like the dropper, easy to use without wasting product.

  12. Pranav –

    I’ve been consistent for a month and my hair feels stronger. Too soon for growth results though.

  13. Yash –

    Not greasy

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The One Hair Serum
₹775.00 Original price was: ₹775.00.₹736.00Current price is: ₹736.00. (Tax included) You save 5% + 5% on checkout