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The Ordinary Hair Care Natural Moisturizing Factors + Hyaluronic Acid, Lightweight Hydrating Scalp Serum with Hyaluronic Acid and Squalane, 2 Fl Oz

  • Based on 441 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
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Size: 2 Fl Oz (Pack of 1)


Product Dimensions ‏ : ‎ 1.53 x 1.53 x 5.14 inches; 4.64 ounces


Item model number ‏ : ‎ 1


UPC ‏ :


Manufacturer ‏ : ‎ DECIEM


Best Sellers Rank: #8,776 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #30 in Scalp Treatments


#30 in Scalp Treatments:


Customer Reviews: 4.4 4.4 out of 5 stars (827)


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If you place your order now, the estimated arrival date for this product is: within 30 days

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Top Amazon Reviews


  • Best hair serum ever for 4c hair
Size: 2 Fl Oz (Pack of 1)
When I got this product I found it out by Ted talk from a black product developer name Jordan any recommended a couple products that are good for the scalp and I got it from my Ulta and I played it once my hair was washed and everything and when I tell you you can feel instead hydration to this product on your scalp you can really feel it it feels nice and soothing and it feels really good and you can feel literally the moisture going on your scalp and I put it on my hairline too so I can help your hair be healthy & it is very lightweight moisturizer for the scalp since build up and stuff is not really good for your scalp so I apply it in my hair every now and then without feeling too bad if my scalp is going to be dirty or anything or going to have build up on it. And it's especially good on your scalp so your hair can grow longer and healthier this definitely helped my hair grow thanks to this product I just wish there was a jumbo size or way bigger size this is probably the fourth time I got in this product for my scalp I highly recommended ... show more
Reviewed in the United States on February 18, 2026 by Angelina Jelly

  • Dandruff? Maybe not.
Size: 2 Fl Oz (Pack of 1)
If you think you have dandruff but dandruff shampoos seem to make the problem worse, you may not have dandruff at all but a dry scalp. This serum soothes itchy skin on contact and gives your scalp that "drinking it in" hyaluronic acid moisturizer feeling. Dramatic decrease in flakes after a single use. It does make your hair a little greasy - I use the night before I shampoo. ... show more
Reviewed in the United States on January 23, 2026 by GreenMeansGo

  • Lightweight scalp serum that relieves dryness without greasing roots
Size: 2 Fl Oz (Pack of 1)
I started using The Ordinary Natural Moisturizing Factors + Hyaluronic Acid Scalp Serum because my scalp gets dry/tight (especially in winter or when I use clarifying shampoo). After a few weeks, I’d say it’s a genuinely helpful product if your main goal is scalp comfort and hydration, not dramatic hair growth. Texture / feel: It’s very lightweight more like a watery gel-serum than an oil. It spreads easily across the scalp and doesn’t make my roots look greasy as long as I don’t overdo it. I can use it on dry hair or right after a shower, and it absorbs pretty fast. Results: The biggest difference for me was less itchiness and less flaky dryness around my hairline and part. My scalp feels calmer, and I’m not constantly wanting to scratch my head on day 2–3 after washing. It also plays well with other hair products (no weird residue or buildup so far). How I use it: I part my hair in a few sections, apply a few drops, then massage it in for ~30 seconds. I use it 3–5 times a week, usually at night or after showering. Scent / irritation: No strong fragrance (big plus). I didn’t get stinging or redness, but if your scalp is super sensitive, I’d still start slow. What I like • Actually helps dry, tight, itchy scalp • Lightweight and not oily • No heavy scent • Easy to apply and doesn’t weigh hair down What to know • If you expect “thicker hair” or major growth, this isn’t really that kind of product • You can accidentally make roots look a bit flat if you apply too much • Works best as a consistent routine product, not a one-time fix. Overall: For scalp hydration, this is a solid 4/5. It’s simple, effective, and easy to use but it’s not transformational, and you still need good wash/conditioning habits to fully fix dryness. ... show more
Reviewed in the United States on February 6, 2026 by Anonymous

  • Smooth Shopping Experience, Great Item!
Size: 2 Fl Oz (Pack of 1)
Works flawlessly. Exactly as advertised.
Reviewed in the United States on March 10, 2026 by Aly

  • Great for dry scalp
Size: 2 Fl Oz (Pack of 1)
I had a dry flaky scalp because my previous shampoos were too deep cleansing and ruining my barrier. This serum plus a more gentle shampoo really helped me! Will get another one soon
Reviewed in the United States on February 17, 2026 by Alina

  • Helps with dry scalp!
Size: 2 Fl Oz (Pack of 1)
I use this after I get out of the shower on damp hair. I find that if I use it on dry hair that it makes it a bit oily! I think it has helped with my dry scalp and flaking! My scalp is especially bad in the winter.
Reviewed in the United States on January 31, 2026 by L. Hoffer

  • Not for my hair
Size: 2 Fl Oz (Pack of 1)
I have short, coarse hair(4C) and this was very drying. I used it at night and it felt great at first, but once it dries it made my hair feel hard and crunchy. I love The Ordinary brand for skincare but this serum just didn't work for my hair.
Reviewed in the United States on January 2, 2026 by rd

  • Helps with itchy scalp, no buildup.
Size: 2 Fl Oz (Pack of 1)
I'm really liking this stuff. I never had dandruff or redness or anything but I definitely got itchy scalp and a bit of sebum sometimes. The dry winter season is here and I recently shaved down to 2mm so my scalp is probably drying out faster than normal. I started using a few drops of this daily after my shower and it only took a couple of days to essentially eliminate any itching. I can't feel it on my scalp once I rub it in, and it doesn't seem to be causing any sebum buildup or anything. I highly recommend trying this if you just have an otherwise essentially normal, but itchy head. ... show more
Reviewed in the United States on December 2, 2025 by Negative459

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