The Ordinary Hair Care Natural Moisturizing Factors + Hyaluronic Acid, Lightweight Hydrating Scalp Serum with Hyaluronic Acid and Squalane, 2 Fl Oz
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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
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Manufacturer : DECIEM
Best Sellers Rank: #3,077 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #7 in Scalp Treatments
#7 in Scalp Treatments:
Customer Reviews: 4.4 4.4 out of 5 stars (669)
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Top Amazon Reviews
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.
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Reviewed in the United States on January 23, 2026 by GreenMeansGo
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.
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Reviewed in the United States on December 2, 2025 by Negative459
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.
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Reviewed in the United States on February 6, 2026 by Anonymous
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
Size: 2 Fl Oz (Pack of 1)
I’ve only used this a few times but I LOVE the way it makes my scalp feel. It instantly makes my scalp feel more hydrated. I use it at night and it doesn’t make my hair greasy the next morning unless I use a lot.
Reviewed in the United States on January 8, 2026 by Mitch K.
Size: 2 Fl Oz (Pack of 1)
this product really does help your scalp, im significantly less itchy and flakey. the problem is fresh out the shower its extremely greasy. i have very thin hair and bangs that attract grease easily, so there is that. it may be better for thicker denser hair, but wouldnt recommend to anyone with bangs or thin hair
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Reviewed in the United States on September 12, 2025 by Bella Lyn Bella Lyn
Size: 2 Fl Oz (Pack of 1)
This is great, affordable, hydrating Sclap serum. I have dry Sclap a lot and this does feel good on the scalp when you apply it. It’s great if you’re starting to get into scalp serums.
Reviewed in the United States on December 9, 2025 by Mariah
Size: 2 Fl Oz (Pack of 1)
I’m really not sure how this works but it does. I am suffering from dry scalp related to winter weather/ indoor dry heating. Just a few drops on the scalp clears it up. It’s a little hard to believe since I have tried tons of different shampoos and colloidal oatmeal products which are okay but not as effective
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Reviewed in the United States on February 9, 2026 by A. Cooke