SH1

Daily Thickening
Shampoo
4.8★
  • Hair Thickening
  • Hair Growth
  • Made in the USA
  • 200ML
Tested on 700 guys and ranked #1 for thickening, SH1 is our best seller. It contains 14 powerful active ingredients designed to block DHT (the hormone responsible for hair loss), promote hair growth and increase density.
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4.8 Stars (379 Reviews)

// Instant Thickening

// Promotes Growth

// Blocks DHT

// Clinically Proven Ingredients

// Anti-Hair Loss Results In 2-4 Months

// Improves Scalp And Hair Health

// 14 Powerful Active Ingredients

// Award Winner

Scent Notes

Citrus, Aromatic, Warm Spicy, Woody, Earthy

Aroma

A scent that’s only amplified by the heat of the shower. A lot of guys tell us they find it suspiciously similar to David Beckham Instinct.
Key Actives
  • Acetyl Tetrapeptide-3 – Follicle Support
  • Red Clover Extract – DHT Defence
  • Saw Palmetto Extract – Shedding Reduction
  • Ginkgo Biloba – Scalp Circulation
Fragrance

SCENT NOTES

Citrus, Aromatic, Warm Spicy, Woody, Earthy

AROMA

A scent that’s only amplified by the heat of the shower. A lot of guys tell us they find it suspiciously similar to David Beckham Instinct.

Ingredients

Water (Aqua), Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Betaine, Sodium Cocoyl Isethionate, Decyl Glucoside, Cocamide Mipa, Peg-120 Methyl Glucose Dioleate, Fragrance (Parfum), Hexylene Glycol, Stearyl Alcohol, Sodium Chloride, Propylene Glycol, Cetyl Palmitate, Butylene Glycol, Behenyl Alcohol, Guar Hydroxypropyltrimonium Chloride, Coconut Acid, Citric Acid, Tetrasodium Edta, Polyquaternium-7, Sodium Isethionate, Sodium Laurate, Glycereth-26, Glycerin, Ppg-5-ceteth-20, Tabasco Pepper (Capsicum Frutescens) Fruit Extract, Kigelia Africana Fruit Extract, Rosemary (Rosmarinus Officinalis) Leaf Extract, Saw Palmetto (Serenoa Serrulata) Fruit Extract, Coffee (Coffea Arabica) Leaf/seed Extract, Clary Sage (Salvia Sclarea) Extract, Ginkgo Biloba Leaf Extract, Sodium Hydroxide, Sodium Benzoate, Cinnamon (Cinnamomum Zeylanicum) Bark Extract, Tocopherol, Methylchloroisothiazolinone, Phenoxyethanol, Hydrogen Peroxide, Potassium Chloride, Dextran, Arginine Levulinate, Potassium Sorbate, Sunflower (Helianthus Annuus) Seed Oil, Methylisothiazolinone, Acetyl Tetrapeptide-3, Trifolium Pratense (Clover) Flower Extract, Benzyl Salicylate, Citrus Aurantium Peel Oil, Limonene, Linalyl Acetate, Linalool

How to Use

Guys ask us all the time – how much do I use, and how often do I use it? You need to be using it at least 3-4 times a week for scalp health, and not getting buildup. Like Liam Gallagher said, "I might be a rockstar, but at least I wash my hair." Less is more, and you only need 1-2 pumps unless you have super long hair.

Shipping & Returns

Returns Policy Shipping Policy

SH1 | DAILY THICKENING SHAMPOO

Performance

Fight Hair Loss Every Time You Shower

Ranked #1 For Thickening

The Hearst Institute tested every shampoo they could get their hands on with 700 guys, and SH1 came out on top.

Product statement

statement

Most shampoos clean your hair. SH1 is designed to help keep it.

We formulated SH1 with 14 clinically backed active ingredients at the levels they're tested to work. Ingredients designed to support hair density, reduce shedding, improve scalp health and strengthen existing hair. And as you simply replace your shampoo it seamlessly slots into your routine without having to form a new habit. Consistency = success.

Accolades

  • Esquire

    [2026]

    Best Shampoo For Thickening

  • GQ

    [2024]

    Best Thickening Shampoo

  • Esquire

    [2026]

    Best Luxury Thickening Shampoo

  • Robb Report

    [2026]

    Best Thickening Shampoo For Men

SCIENTIFICALLY BACKED, CLINICALLY PROVEN

Scientifically backed, clinically proven

A peptide complex designed to help support thicker, denser-looking hair by strengthening the follicle environment.

You've Tried The Rest, Now Try The Best

You've Tried The Rest, Now Try The Best
You've Tried The Rest, Now Try The Best
SH1
SH1
SH+
SH+
Hair Type Mild to moderate hair loss Moderate to advanced hair loss
DHT Blockers Yes, moderate concentration Yes, multiple clinical grade blockers
Awards Yes, recognised by GQ, Esquire, Men's Health and more Yes, recognised by GQ, Esquire, Men's Health and more
Active Ingredients 14 20
Fragrance Vetiver and Baltic Amber Bergamot, Rose and Patchouli
Daily Cost Around $1/day depending on usage Around $2/day depending on usage
Product actions

PRODUCT INFO

Designed To The Last Detail

Application

Precision Airless Pump

Amount

200ML

Lab

Formulated in Miami, Florida at a Good Manufacturing Practices ISO22716:2007 Certified Laboratory. SH1 is made using the highest quality ingredients and advanced manufacturing practices.

Design Inspiration

Our packaging and colourways are inspired by the industrial brilliance of Dieter Rams for Braun. All our product barcodes feature a ‘007’ as a tribute to Patrick’s favourite film franchise, James Bond.

Materials
  • 50% Post Consumer Recycled Tube
  • FSC-Certified Cardboard Outer
Certifications

Our lab has been Certified Organic since 2017.

Ethically Sourced
  • Paraben-Free
  • Cruelty-Free
Results

Instant hair thickening via cosmetic thickeners. Anti-hair loss results usually visible in 3–4 months.

Questions?
We're Here To Help

What is SH1?

SH1 is a high-performance daily thickening shampoo designed to help improve hair density, reduce thinning and support healthier-looking hair over time.

How does SH1 help with hair loss?

SH1 contains a blend of active ingredients including Acetyl Tetrapeptide-3, Red Clover Extract and Saw Palmetto Extract, which help target factors associated with hair thinning including DHT buildup and poor follicle health.

What is DHT?

DHT (Dihydrotestosterone) is a hormone linked to male pattern hair loss. Over time, DHT can shrink hair follicles, leading to thinner, weaker hair and reduced density. SH1 helps to stop the absorption of DHT which helps slow hair loss.

Does SH1 regrow hair?

SH1 contains ingredients that help promote hair growth, stimulating blood flow to the scalp and lengthening the hair growth phase. Results vary depending on the individual, consistency of use and how advanced their hair loss is.