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Save $19

Rosemary Serum | 90-Day Supply

3x 30 ml Save $19
4.5
Rated 4.5 out of 5 stars
15 Reviews

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

The Rosemary Serum (90-Day Supply) is an advanced leave-in serum for daily use. A combination of 70% Rosemary Water, Oil, Extract and 5% Capixyl™ helps support denser, fuller, healthier looking hair. The Rosemary Serum also includes a micro-dose of plant proteins and essential ceramides. The Rosemary Serum is a clear, quick-dry, and no-residue serum. The Rosemary Serum smells like pure Rosemary. No fine fragrance has been added. The Rosemary Serum does not smell like the Rosemary Shampoo or the Rosemary Conditioner. Dermatologist-Tested. Hypoallergenic. Non-Comedogenic. Vegan. Color-Safe.

$125

$144 3x 30 ml Save $19
30 ml | $48 3x 30 ml | $125

Free US Shipping $75+ | Free Returns

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

The Rosemary Serum (90-Day Supply) is an advanced leave-in serum for daily use. A combination of 70% Rosemary Water, Oil, Extract and 5% Capixyl™ helps support denser, fuller, healthier looking hair. The Rosemary Serum also includes a micro-dose of plant proteins and essential ceramides. The Rosemary Serum is a clear, quick-dry, and no-residue serum. The Rosemary Serum smells like pure Rosemary. No fine fragrance has been added. The Rosemary Serum does not smell like the Rosemary Shampoo or the Rosemary Conditioner. Dermatologist-Tested. Hypoallergenic. Non-Comedogenic. Vegan. Color-Safe.

Free US Shipping $75+ | Free Returns

SET CONTAINS

TARGETS

Hair Health

TREATMENT

Formula Contains:

Rosemary Water
Rosemary Oil
Rosemary Extract
5% Capixyl™
Proteins
Ceramides

See Ingredients

TESTED

Product Is:

  • Dermatologist-Tested
  • Hypoallergenic
  • Non-Comedogenic
  • EU Compliant
  • Certified Vegan
  • Cruelty-Free

TEXTURE

Liquid

SCENT

Rosemary

Note: The Rosemary Serum smells like pure Rosemary. No fine fragrance has been added to this formula. The Rosemary Serum does not smell like the Rosemary Shampoo or the Rosemary Conditioner.

pH

4.7 - 5.7

USAGE

See Usage

APPLICATION

FOOTPRINT

Brand Is:

  • 1% For The Planet
  • Certified B Corp
  • Certified Climate Neutral
  • Certified Plastic Neutral
  • Certified FCS
  • How2Recycle

What Is Capixyl™?

Capixyl™ is an anti-thinning agent for hair. It is a synergistic combination of a biomimetic peptide and red clover flower extract rich in Biochanin A. Capixyl™ helps support denser, fuller, healthier-looking hair. Daily used is required for results.

Answer

Why Is pH Level Mentioned On The Package?

During the formulation process we optimize the pH of the formula. We believe it directly impacts the safety and efficacy of the formula. The pH objective will vary based on product purpose. On the secondary packaging (carton) we provide a pH range. The reason pH range is indicated is that pH may vary during the manufacturing process and/or slightly change over time. Formula that do not contain enough water, will not have a pH.

Answer

Is This Product Certified Eczema-Safe?

No. This product does not hold The Seal of Approval by the National Eczema Association.

Answer

Can I Use The Product If I Am Pregnant?

We formulate without ingredients on the EU's prohibited substances list (Regulation No.1223/2009, Annex II). This formula is Dermatologist-Tested and Hypoallergenic. If you have any specific concerns, we recommend consulting your doctor prior to use.

Answer

Is This Product Certified Gluten-Free, Soy-Free And Nut-Free?

This product is not certified gluten-free, soy-free or nut-free. This product 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 this product. If you still wish to try, please consider a patch test.

Answer

4.5
Rated 4.5 out of 5 stars
Based on 15 reviews
Total 5 star reviews: 13 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 2
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15 reviews
  • Nadine
    Reviewing
    Rosemary Serum | 30-Day Supply
    I recommend this product
    Rated 5 out of 5 stars
    3/26/26
    5 Stars

    Great product and timely delivery. Thank you!

    Was this helpful?
  • Sophia
    Reviewing
    Rosemary Serum | 30-Day Supply
    I recommend this product
    Rated 5 out of 5 stars
    1/27/26
    5 Stars

    Rosemary has numerous benefits for scalp and hair care so it’s nice to see a product that includes this ingredient. At first I was a little timid to use the oil because I was afraid it would leave my scalp greasy, but, to my surprise, this serum did not do that at all! I used the dropper to apply to my scalp after showering and it dried without a trace of oily appearance. It was so easy to use. Can’t wait to watch my hair benefit from this serum. I absolutly love every product from Necessaire’s rosemary hair care line. Also- anyone else love their packaging style? I love the simplicity and how it looks on my counter- what a good bonus!

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  • Janine H.
    Verified Buyer
    Reviewing
    Rosemary Serum | 90-Day Supply
    I recommend this product
    What are your skin concerns? Dryness, Aging
    What are your hair concerns? Frizz, Thinning
    Rated 5 out of 5 stars
    12/28/25
    So Far, I Like

    Have only been using for a few weeks but have already noticed less shedding and roots looking stronger. I have also been using the travel sizes of the Rosemary Shampoo and Conditioner for a few weeks as well. So far, I am very pleased with the whole system. My 50% grey natural hair is smooth, shiny and soft. My scalp feels great, no itchiness. Recommended products!

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  • Kim S.
    Verified Buyer
    Reviewing
    Rosemary Serum | 30-Day Supply
    I recommend this product
    What are your hair concerns? Thinning
    Rated 5 out of 5 stars
    12/24/25
    It works

    I noticed thinning around my temples and had been prescribed topical minoxidil by my doctor. It irritated my scalp along with any other topical I tried. This one does not aggravate my skin and has helped in regrowth and thickness in the area. I would definitely recommend.

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  • Ryane B.
    Verified Buyer
    Reviewing
    Rosemary Serum | 30-Day Supply
    I recommend this product
    Rated 5 out of 5 stars
    10/20/25
    Love!

    Makes my scalp happy and I can already tell I have more growth up front where I have been thinning.

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