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The Scalp Duo | Hyaluronic Acid

4.4
Rated 4.4 out of 5 stars
674 Reviews

The Necessary™ | Care For Your Body | Care For Your Planet

Treat Your Scalp Like Your Skin™

The Scalp Duo is a treatment cleanse and conditioning system for scalp and hair health. The Shampoo and The Conditioner are infused with Hyaluronic Acid, Vitamin B3, Vitamin B5 and ApiScalp™ to hydrate, balance and soothe a dry, sensitive scalp. The Hyaluronic Acid complex used in The Shampoo and The Conditioner has seven (7) Molecular Weights for multi-level hydration. ApiScalp™ – a plant based, natural extract of Apium Graveolens Seeds - helps calm itchiness and irritation. All ingredients are delivered in a fragrance-free, gentle, and lightweight gel and cream. Safe for daily use. Dermatologist-Tested. Hypoallergenic. Non-comedogenic. Color-Safe. The Shampoo and The Conditioner hold The Seal of Approval by The National Eczema Association. 2 x Full-Size.

Clinical Perception Study | The Hair Essentials. 50+ participants used The Shampoo, The Conditioner and The Scalp Serum for 90 days. USA 2022. Topline below.

  • 90% Saw Thicker Hair
  • 94% Saw Fuller Hair
  • 96% Saw Healthier Hair

$60

Free US Shipping $75+ | Free Returns

The Necessary™ | Care For Your Body | Care For Your Planet

Treat Your Scalp Like Your Skin™

The Scalp Duo is a treatment cleanse and conditioning system for scalp and hair health. The Shampoo and The Conditioner are infused with Hyaluronic Acid, Vitamin B3, Vitamin B5 and ApiScalp™ to hydrate, balance and soothe a dry, sensitive scalp. The Hyaluronic Acid complex used in The Shampoo and The Conditioner has seven (7) Molecular Weights for multi-level hydration. ApiScalp™ – a plant based, natural extract of Apium Graveolens Seeds - helps calm itchiness and irritation. All ingredients are delivered in a fragrance-free, gentle, and lightweight gel and cream. Safe for daily use. Dermatologist-Tested. Hypoallergenic. Non-comedogenic. Color-Safe. The Shampoo and The Conditioner hold The Seal of Approval by The National Eczema Association. 2 x Full-Size.

Clinical Perception Study | The Hair Essentials. 50+ participants used The Shampoo, The Conditioner and The Scalp Serum for 90 days. USA 2022. Topline below.

  • 90% Saw Thicker Hair
  • 94% Saw Fuller Hair
  • 96% Saw Healthier Hair

Free US Shipping $75+ | Free Returns

SET CONTAINS

Full Ingredients

Aqua/Water/Eau
Sodium Lauroyl Methyl Isethionate
Aloe Barbadensis Leaf Juice
Cocamidopropyl Betaine
Sodium Methyl Oleoyl Taurate
Sodium Cocoyl Isethionate
Propanediol
Niacinamide
Sodium Hyaluronate
Panthenol
Apium Graveolens (Celery) Seed Extract
Persea Gratissima (Avocado) Oil
Glycerin
Disodium Cocoyl Glutamate
Caprylic/Capric Triglyceride
Citric Acid
Caprylhydroxamic Acid
Sodium Chloride
1,2-Hexanediol
Caprylyl Glycol
Sodium Benzoate

For the most complete and up-to-date list of ingredients, please refer to the product packaging.

Full Ingredients

Water
Cetearyl Alcohol
Glycerin
Cocos Nucifera (Coconut) Oil
Caprylic/Capric Triglycerides
Behentrimonium Methosulfate
Persea Gratissima (Avocado) Oil
Aloe Barbadensis Leaf Juice
Niacinamide
Ceramide AG
Ceramide AP
Ceramide EOP
Ceramide NG
Ceramide NP
Sodium Hyaluronate
Linoleic Acid
Linolenic Acid
Centella Asiatica Extract
Panthenol
Acetyl Tetrapeptide-3
Apium Graveolens (Celery) Seed Extract
Trifolium Pratense (Clover) Flower Extract
Tocopherol
Oleic Acid
Palmitic Acid
Stearic Acid
Butylene Glycol
Glyceryl Caprylate
Hydroxyethylcellulose
Caprylhydroxamic Acid
Hydrogenated Lecithin
Propylene Glycol
Sucrose Distearate
Glyceryl Stearate
Dextran
Cholesterol

For the most complete and up-to-date list of ingredients, please refer to the product packaging.

TARGETS

Scalp Health

TREATMENT

Hyaluronic Acid
Vitamin B3
Vitamin B5
ApiScalp™

TESTED

  • Dermatologist-Tested
  • Hypoallergenic
  • Non-Comedogenic
  • EU Compliant

SCENT

Fragrance-Free

USAGE

See Usage

FOOTPRINT

  • 1% For The Planet
  • Certified B Corp
  • Certified Climate Neutral
  • Certified Plastic Neutral
  • Certified FSC
  • Certified Vegan
  • Cruelty-Free
  • How2Recycle

USAGE

See Usage

AWARDS

2022 Allure Best Of Beauty
2023 SELF
2021 OK!

See Awards

Can I use The Shampoo and The Conditioner daily?

Yes. Use The Shampoo and The Conditioner daily or on wash day. The Shampoo and The Conditioner are dermatologist-tested, hypoallergenic and non-comedogenic. No SLS/SLES. No Silicones. No Phthalates. No Parabens. No PEGs. Formulas hold The Seal of Approval by The National Eczema Association.

Answer

Can all hair types and hair textures use The Shampoo and The Conditioner?

Yes. The Shampoo and The Conditioner are safe for all hair types and textures. The Shampoo and The Conditioner are dermatologist-tested, hypoallergenic and non-comedogenic. No SLS/SLES. No Silicones. No Phthalates. No Parabens. No PEGs. Formulas hold The Seal of Approval by The National Eczema Association.

Answer

When should I use Fragrance-Free vs Rosemary Franchise?

Fragrance-Free Shampoo and Conditioner is a balancing cleanse and conditioning duo for a dry, sensitive scalp. Rosemary Shampoo and Conditioner is a strengthening cleanse and conditioning duo for weak, thinning hair. All formulas are dermatologist- tested, hypoallergenic and non-comedogenic. No SLS/SLES. No Silicones. No Phthalates. No Parabens. No PEGs.

Answer

Is The Shampoo and The Conditioner gluten-free, soy-free and nut-free?

The Shampoo and The Conditioner are not certified gluten-free, soy-free or nut-free. Nécessaire is manufactured in a facility where gluten, soy and nuts may be used. If you have an allergy to gluten, soy, or nuts, we recommend that you do not use these products. If you still wish to try, please consider a patch test.

Answer

Is The Shampoo and The Conditioner pregnancy-safe

At Nécessaire we formulate without ingredients on the EU's prohibited substances list (Regulation No.1223/2009, Annex II). All of our products are dermatologist-tested, hypoallergenic and non-comedogenic. If you have any specific questions or concerns, we recommend consulting your doctor.

Answer

4.4
Rated 4.4 out of 5 stars
Based on 674 reviews
Total 5 star reviews: 494 Total 4 star reviews: 60 Total 3 star reviews: 47 Total 2 star reviews: 34 Total 1 star reviews: 39
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674 reviews
  • darlene g.
    Verified Buyer
    Reviewing
    The Shampoo | Hyaluronic Acid
    I recommend this product
    What are your hair concerns? Frizz, Damage, Dryness
    Rated 5 out of 5 stars
    3/31/25
    THE best fragrance free shampoo

    Seriously, I have tried probably 20 other brands and they didn’t come close. I pair it with the fragrance free conditioner.

    Was this helpful?
  • Angela P.
    Verified Buyer
    Reviewing
    The Shampoo | Hyaluronic Acid
    I recommend this product
    What are your skin concerns? Dryness, Aging
    What are your hair concerns? Frizz, Damage, Dryness, Thinning
    Rated 5 out of 5 stars
    3/30/25
    Excellent. Need bigger bottles!

    The perfect shampoo when you haven’t washed your hair in days, or when you just washed it yesterday. Cleans thoroughly and makes a perfect base for a thicker treatment, mask, or any conditioner. Can’t think of a reason to use any other shampoo.

    Was this helpful?
  • Brad F.
    Verified Buyer
    Reviewing
    The Scalp Essentials Mini
    I recommend this product
    What are your skin concerns? Dryness
    What are your hair concerns? Dryness
    Rated 5 out of 5 stars
    3/26/25
    Perfect for Travel

    This was great for a recent weeklong vacation - these were the right size and I had no spills in my suitcase. 10/10!

    Was this helpful?
  • Elizabeth B.
    Verified Buyer
    Reviewing
    The Shampoo | Hyaluronic Acid
    I recommend this product
    Rated 5 out of 5 stars
    3/24/25
    Nice shampoo, but you NEED the conditioner.

    This shampoo cleanses really well, but I can't use it without the conditioner. It's quite drying and using it alone makes it difficult to even comb my hair afterward. However, when used with the conditioner, my hair dries shiny and healthy looking. As to the claim of helping thicken hair...? I can't say I've noticed any difference after months of using it. Still makes my hair clean and shiny so I like it.

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  • Tracey
    Reviewing
    The Scalp Essentials | Hyaluronic Acid | 5% Capixyl™
    I recommend this product
    Rated 5 out of 5 stars
    3/22/25
    5 Stars

    Great products

    Was this helpful?