NEW! Milk it, spritz it. Hydration from AM to PM. Shop now >

Free full size cleanser* (worth $19) Take our Skincare Quiz >

Free shipping on orders over $35

Hyaluronic Acid Hydrating Hair Treatment product on green background
Before and after of using Hyaluronic Acid Hydrating Hair Treatment
Hyaluronic Acid Hydrating Hair Treatment bottle infographic with bottle dimensions and text that reads 'Amount to apply: enough to thinly coat all of your hair', 'When to apply: AM or PM' and 'How often: 1-2 times a week'
Hyaluronic Acid Hydrating Hair Treatment bottle with model holding

Hyaluronic Acid Hydrating Hair Treatment | The INKEY List

Helps to de-frizz, hydrate & boost shine

4.4
Rated 4.4 out of 5 stars
4.4 Stars (229 Reviews)
$12.00 / 100ml
A lightweight serum formulated with optimized high and low molecular weight Hyaluronic Acids, helps to hydrate, reduce frizz and brittleness to improve shine, whilst helping to protect hair from the impact caused by environmental pollution.

Hyaluronic acid is a classic ingredient, traditionally known in skincare for its highly hydrating properties. Lack of hydration in the hair can be caused by a number of things, including over washing, water temperature being too high, using heated tools without heat protection or humidity. When your hair becomes dry, the hair cuticle is rough and open, causing hair to lose moisture and become frizzy.

Suitable for:

  • All Hair Types
  • Colored Hair
  • Pregnancy & Breastfeeding

Targets:

  • Frizzy Hair
  • Lacklustre Hair
  • Dry Hair

Proud to be:

  • Carbon Net-Zero
  • B-Corp
  • Cruelty Free
  • Recyclable
  • Vegan
  • Silicon Free
  • Sulphate Free
  • Alcohol Free
  • Gluten Free
  • Fragrance Free

Shipping info

Standard tracked shipping

  • $5.95 or FREE on your first order & orders over $35
  • (2-5 business days*)

Express tracked shipping

  • $15
  • (2-3 business days*, when ordered before 3pm EST)

*Find out more about shipping here.

Track the status of your parcel with
our trusted couriers

Compare with...

This product

Have you tried?

This product

Hyaluronic Acid Hydrating Hair Treatment

Hyaluronic Acid Hydrating Hair Treatment

  • •Helps to hydrate, reduce frizz and brittleness to improve shine.
  • •Helps to protect hair from the impact caused by environmental pollution.

or

Have you tried?

  • •Helps to repair, protect and strengthen damaged hair bonds.
  • •Helps repair, strengthen and protect hair from damage caused by excessive bleaching, color dyeing, or heat styling.

Still not sure?

Take our Hair & Scalp Quiz and get a personalised routine.

Take The Quiz
4.4
Rated 4.4 out of 5 stars
Based on 229 reviews
Total 5 star reviews: 150 Total 4 star reviews: 46 Total 3 star reviews: 14 Total 2 star reviews: 10 Total 1 star reviews: 9
Reviews Summary
Customers say this hair treatment makes their hair smoother and less frizzy. Many reviews mention its lightweight formula works well on both wet and dry hair. The treatment leaves hair feeling soft and manageable without weighing it down. While most users report improved shine and hydration, some note a tacky texture. Reviews are mixed on application timing, with many preferring to use it on damp hair after washing. Those with fine hair particularly appreciate how it adds moisture without creating greasiness.
229 reviews
  • MichelleE E.
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Hair Type Wavy
    Hair Goals Hydration, Anti-Frizz, Flake Free Scalp, Curl Definition, Increased Volume
    Skin Type Combination
    Skin Concerns Redness, Hyperpigmentation, Under Eye Circles, Fine Lines and Wrinkles, Acne Scars
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    1 week ago
    My HG hair serum

    This is the best hair serum. I love TIL products but this one is the best, I have to have this on hand always. I mix a few drops with my Leave in conditioner after towel drying my hair. It's easier to brush through and adds hydration to reduce frizz. It's an HG product, highly recommend.

  • Despina B.
    Verified Buyer
    I recommend this product
    Age Range 35 - 44
    Hair Type Straight
    Hair Goals Hydration
    Skin Type Oily
    Skin Concerns Oiliness, Plumping, Fine Lines and Wrinkles
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    1 week ago
    Nice!

    Just started the use, so far so good with hydration

  • Rosália P. P.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    Only product i use in my hair after wash nowadays

    I sarted to use only this product since the first time i tryed it. It's amazing. My hair is much more shiny and it doesn't frizz so much even in rainy days!