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Allure Best of Beauty 2024

Strengthen Concentrated Shampoo

$30.004.5 · 123 reviews

  • Free shipping $90+
  • Ships in 2 business days
  • 60-day returns

Our gentle, sulfate-free shampoo cleanses without stripping + leaves dry or damaged hair feeling stronger and looking healthier over time.

Made with no added water — typical shampoos can contain up to 85% — and powered by Rootbiomic Ferment™, so hair is left resilient rather than coated.

What it does
  • Maintains scalp balance for stronger, healthier-looking hair
  • Concentrated formula with no added water is less wasteful and more powerful
  • Reduces frizz, and improves moisture, strength + shine
Why you'll love it

Unlike any shampoo you’ve seen before, this formula is ultra-concentrated. The result? A rich, luxe lather, sans sulfates, that’s second to none.

Who it's for
  • HAIR TYPE: Weak, damaged hair
  • SCALP TYPE: All

Our shampoo is made for all hair types, especially weak and damaged hair, and is also suitable for chemically-treated, color-treated hair and all scalp types.

Ingredients (INCI)

Lactobacillus/(Centella Asiatica/Coffee Seed/Ganoderma Lucidum/Hops/Panax Ginseng Root/Scutellaria Baicalensis Root) Extract/Pea Extract/Rice Seed Extract Ferment Filtrate, Water/Aqua/Eau, Sodium Lauroyl Methyl Isethionate, Sodium Lauroyl Lactylate, Sodium C14-18 Olefin Sulfonate, Cocamidopropyl Hydroxysultaine, Sodium Cocoyl Alaninate, Lauryl Glucoside, Glyceryl Laurate, Sodium Chloride, Glycerin, Butylene Glycol, Glycol Stearate, Hydrolyzed Yeast Protein, Citrus Junos Fruit Extract, Niacinamide, Inulin, Hydroxypropyltrimonium Inulin, Alpha-Glucan Oligosaccharide, Arginine, Glycine Soja Extract, Glycolipids, Betaine, 1,2-Hexanediol, Sodium Cocoate, Guar Hydroxypropyltrimonium Chloride, Citric Acid, Sodium Sulfate, Lecithin, Sodium Benzoate, Tetrasodium Glutamate Diacetate, Ethyl Lauroyl Arginate HCL, Potassium Sorbate, Caramel, Cetyl Alcohol*, Limonene, Fragrance/Parfum [ILN 157166] *Conditioning agent

Goes with it

  • Hair

    Weak or damaged

    Made for all hair types, especially weak and damaged hair.

  • Scalp

    All scalp types

    Sulfate-free, and made with no added water.

  • Color

    Suitable for color-treated hair

    And for chemically treated hair.

Before: long blonde hair, seen from behind
After one use of Strengthen Concentrated Shampoo + Conditioner, blow dried with a round brush
BEFOREAFTER

Results after one use of Strengthen Concentrated Shampoo + Conditioner.

Unretouched photos, individual results will vary. Blow dried with a round brush.

How to use Strengthen Shampoo

Strengthen Concentrated Shampoo bottle standing in lather and water
  1. Wet hair thoroughly.
  2. Pump a little into your palm. You can always add more.
  3. Massage the lather into your scalp and let it carry down the lengths.
  4. Rinse well.
  5. When empty, recycle the rinsed aluminum bottle and move the pump to your next one.

What’s in it, and what isn’t.

  • Rootbiomic Ferment™

    Our multivitamin superfood: clinically effective proteins, roots and mushrooms, fermented into micronutrients for active, anchored roots, a balanced, hydrated scalp and visibly stronger, healthier hair.

  • Bio-Peptides

    Target collagen and keratin to help fortify strands from root to tip.

  • Yuzu Ceramide

    Citrus junos fruit extract. Intensely moisturizes, smooths and helps protect hair from future damage.

  • I am in love with this concentrated shampoo. Not just because I use half the amount I would normally use, but because it smells amazing and has a long lasting fragrance that I love, my hair is healthier and stronger, and I am seeing less hair in my brush every day.

    Amanda MVerified Reviewer

  • Very concentrated, don't need a lot to get my scalp clean.

    Molly TVerified Reviewer

Questions about Strengthen Shampoo?

Still curious? Email hello@therootist.com and a team member will be happy to help.

Will this shampoo work on my hair?

Our shampoo is made for all hair types and textures, especially weak and damaged hair, and is also suitable for chemically-treated and color-treated hair. It’s also suitable for all scalp types.

How often should I use the Strengthen Concentrated Shampoo?

Our shampoo is meant to be used regularly whenever you wash your hair as part of your wellness ritual for roots, scalp, and hair.

Do I need to dilute this shampoo? What if I’m not seeing lather?

You don’t need to dilute the shampoo. If you need more lather, apply the shampoo, then slightly wet your head while working it through your hair. If that doesn’t do it, the issue may be build up on your scalp and hair. Try incorporating a pre-shampoo into your wash routine, such as our Pre-Shampoo Scalp Clarifying Rinse, to exfoliate your scalp before shampooing. Think of it like a double cleanse for your hair.

Can I use the Strengthen Concentrated Shampoo and the AHA ACV Pre-Shampoo Rinse together?

Yes, they are a dream team and work perfectly together. Use the rinse as directed, and follow with the shampoo for a double cleanse ritual that promotes a balanced scalp and strong, healthy hair.

Are these bottles recyclable? Is your shampoo sustainable?

Yes, our aluminum bottles are easily recyclable. Keep your pump for shampoo refills. ALL Rootist products are silicone-free, prioritizing the holistic health of roots, scalp, and hair. Unlike conventional formulas, we avoid silicones, which are non-biodegradable and may pose unknown risks in the environment.

Strengthen Concentrated Shampoo among soap bubbles

Worth Rooting For

Typical shampoos are mostly water. Our eco-conscious shampoo is made with no added water and ultra-concentrated. Our smaller, lighter, and easily recyclable bottles help us minimize the impact of shipping our products, too.