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The Scalp Serum Trio | 1% Hyaluronic Acid | 5% Capixyl™

3 x 30 ml Save $15
4.3
Rated 4.3 out of 5 stars
63 Reviews

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

Treat Your Scalp Like Your Skin™

The Scalp Serum / 90 Day-Supply (3 x 30 ml) is a leave-in treatment serum for the scalp. This foundational formula helps hydrate, balance and soothe, while supporting visibly thicker, fuller, and healthier-looking hair. 1% Hyaluronic Acid (7 Molecular Weights) delivers intense multi-level hydration while Vitamin B3 and Vitamin B5 help balance and soothe a dry, sensitive scalp. 5% Capixyl™ delivers visibly thicker, fuller, healthier-looking hair. The Scalp Serum is a quick-dry, water-light, and no-residue serum. The Scalp Serum must be used daily for results. Can be used in damp or dry hair. Fragrance-Free. Dermatologist-Tested. Hypoallergenic. Non-Comedogenic. Color-Safe. The Scalp Serum holds The Seal of Approval by The National Eczema Association.

Clinical Results | 50+ participants used The Shampoo, The Conditioner and The Scalp Serum for 12 Weeks. USA 2022. Q3.

  • 96% Said My Hair Looks Healthy
  • 96% Said My Scalp Feels Hydrated
  • 96% Said My Scalp Feels Less Itchy
  • 94% Said My Scalp Feels Less Flaky
  • 94% Said My Scalp Feels Healthy


    $120

    $135 3 x 30 ml Save $15
    30 ml | $45 3x 30 ml | $120

    Free US Shipping $75+ | Free Returns

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

    Treat Your Scalp Like Your Skin™

    The Scalp Serum / 90 Day-Supply (3 x 30 ml) is a leave-in treatment serum for the scalp. This foundational formula helps hydrate, balance and soothe, while supporting visibly thicker, fuller, and healthier-looking hair. 1% Hyaluronic Acid (7 Molecular Weights) delivers intense multi-level hydration while Vitamin B3 and Vitamin B5 help balance and soothe a dry, sensitive scalp. 5% Capixyl™ delivers visibly thicker, fuller, healthier-looking hair. The Scalp Serum is a quick-dry, water-light, and no-residue serum. The Scalp Serum must be used daily for results. Can be used in damp or dry hair. Fragrance-Free. Dermatologist-Tested. Hypoallergenic. Non-Comedogenic. Color-Safe. The Scalp Serum holds The Seal of Approval by The National Eczema Association.

    Clinical Results | 50+ participants used The Shampoo, The Conditioner and The Scalp Serum for 12 Weeks. USA 2022. Q3.

    • 96% Said My Hair Looks Healthy
    • 96% Said My Scalp Feels Hydrated
    • 96% Said My Scalp Feels Less Itchy
    • 94% Said My Scalp Feels Less Flaky
    • 94% Said My Scalp Feels Healthy


      Free US Shipping $75+ | Free Returns

      TARGETS

      Scalp Health

      TREATMENT

      1% Hyaluronic Acid
      5% Capixyl™

      Vitamin B3
      Vitamin B5

      See Ingredients

      TESTED

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

      USAGE

      See Usage

      TEXTURE

      Liquid

      Clear
      Quick-Dry
      Water-Light
      Non-Sticky
      Non-Greasy
      No Residue

      SCENT

      Fragrance-Free

      pH

      4.7 - 5.7

      FOOTPRINT

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

      AWARDS

      2023 Harper’s Bazaar
      2023 Women's Health
      2022 CEW UK | Best Prestige Brand
      2019 NewBeauty Best Unisex Body Brand

      How does The Scalp Serum work?

      The Scalp Serum is formulated with 5% Capixyl™, a clinically-proven active ingredient which has been shown to support hair growth and visibly minimize thinning. 1% Hyaluronic Acid - 7 Molecular Weights - provides instant relief for a dry, sensitive scalp. Formula can be used in damp or dry hair. Oil-Free. Non-Sticky. Non-Greasy. No Residue. No Alcohol. No Silicones. No Synthetic Fragrance. Formula can be used on color-treated hair.

      Answer

      How soon will I see results?

      The Scalp Serum is formulated with 5% Capixyl™, a clinically-proven active ingredient which has been shown to support hair growth and visibly minimize thinning. Please see the results of the Clinical Perception Study above. 50+ participants used The Shampoo, The Conditioner and The Scalp Serum for 90 days. Consistent daily use is required for results.

      Answer

      What is Capixyl™?

      Capixyl™ is an anti-thinning agent for hair. It is a synergistic combination of biomimetic peptide and red clover flower extract rich in Biochanin A. This hair treatment helps support and improve the hair growth cycle. Capixyl™ helps provide fuller, thicker, healthier hair. Capixyl™ should be used every day for best results. It is preservative free.

      Answer

      Will The Scalp Serum help with dry, itchy scalp?

      The Scalp Serum is formulated with 1% Hyaluronic Acid (7 Molecular Weights) for instant hydration and a proprietary Celery Seed Extract for itch-relief.

      Answer

      Is The Scalp Serum Oil-Free? Will it leave a residue?

      The Scalp Serum is Oil-Free and Non-Comedogenic. The Scalp Serum has a water-light texture and is non-sticky, non-greasy and will leave no residue.

      Answer

      4.3
      Rated 4.3 out of 5 stars
      Based on 63 reviews
      Total 5 star reviews: 45 Total 4 star reviews: 5 Total 3 star reviews: 4 Total 2 star reviews: 4 Total 1 star reviews: 5
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      63 reviews
      • Maria L.
        Verified Buyer
        Reviewing
        The Scalp Serum | 1% Hyaluronic Acid | 5% Capixyl™
        I recommend this product
        What are your skin concerns? Aging
        What are your hair concerns? Thinning, Frizz, Dryness
        Rated 5 out of 5 stars
        4/23/25
        Great product

        I have used many serums since serums are a thing. I have thinning hair due to menopause and older age. This product is by far my favorite. It really makes my hair look fuller, shinier, softer and less frizzy. I noticed the difference from the first time I tried it.

        I will continue to use indeed!

        Was this helpful?
      • Gina C.
        Verified Reviewer
        Reviewing
        The Scalp Serum Trio | 1% Hyaluronic Acid | 5% Capixyl™
        I recommend this product
        What are your hair concerns? Thinning
        Rated 5 out of 5 stars
        2/17/25
        Where did it go??

        What happened to the 60ml bottles?! 😔

        Was this helpful?
      • Patricia
        Reviewing
        The Scalp Serum | 1% Hyaluronic Acid | 5% Capixyl™
        I recommend this product
        What are your skin concerns? Aging
        What are your hair concerns? Thinning
        Rated 5 out of 5 stars
        2/13/25
        Question

        Can this be used on eyebrows?

        Was this helpful?
      • Jayla
        Reviewing
        The Scalp Serum | 1% Hyaluronic Acid | 5% Capixyl™
        I recommend this product
        Rated 5 out of 5 stars
        2/1/25
        5 Stars

        Love this product so so much

        Was this helpful?
      • Rafaela H.
        Verified Buyer
        Reviewing
        The Scalp Serum | 60-Day Supply | 5% Capixyl™
        I recommend this product
        What are your skin concerns? Aging, Eczema/Psoriasis, Uneven Skin/Spots
        What are your hair concerns? Frizz, Dryness, Thinning
        Rated 5 out of 5 stars
        1/14/25
        Love it

        My hair looks and feels healthier

        Was this helpful?