Beauty Best Pure Squalane Vs The Ordinary Serum: Hair Compared
The Ordinary's pure squalane and its NMF + HA scalp serum share a brand but serve different masters. The 100% Plant-Derived Squalane is a weightless finishing oil for shine and frizz control. The Natural Moisturizing Factors + HA serum is a scalp treatment for dryness and flaking. One polishes lengths, the other comforts skin. This comparison breaks down their formulas, uses and ideal buyers. Lengths versus scalp decides everything. Some routines happily include both.
| Factor | The Ordinary 100% Plant-Derived Squalane | The Ordinary Hair Care Natural Moisturiz |
|---|---|---|
| Formula | 100% plant-derived squalane, single ingredient | Squalane plus natural moisturizing factors and hyaluronic acid |
| Purpose | Weightless shine and frizz control for lengths | Hydration and comfort for dry, flaky scalps |
| Texture | Dry oil that vanishes into hair | Lightweight milky serum for scalp application |
| Application | Drops smoothed over damp or dry ends | Dropper applied directly to the scalp |
| Best for | Fine to medium hair wanting shine without weight | Dry, tight scalps needing hydration |
Our Verdict
Pure squalane wins for shine, frizz control and everyday polish on the lengths. Its weightless feel suits fine hair better than any other oil. The NMF + HA serum wins for dry, flaky scalps that need real hydration. Choose the oil for cosmetic finishing and the serum for scalp comfort. If you can only buy one, pick the one matching your bigger complaint. Both are affordable, gentle and effective. Your hair goal should make this an easy call. Pick the oil for shine and the serum for scalp comfort. Your bigger complaint decides. Your hair goal should make this an easy choice. Both options are affordable and effective.
More Top Picks in This Category
Not sold on either of these two? Here are more bestselling options worth considering.
Best for: Committed nightly users wanting the two-pack value.
The Ordinary Hair Care Natural Moisturizing Factors + Hyaluronic Acid, Lightweight Hydrating Scalp Serum with Hyaluronic Acid and Squalane, 2 Fl Oz (Pack of 2)
- Two-pack of the squalane scalp serum
- Better value for nightly users
- Same NMF plus hyaluronic acid formula
- Two 2 ounce bottles
Pros
- Stock up and save per bottle
- Great for shared bathrooms
Cons
- Two bottles upfront cost
- Serums expire, use within a year
Want the Full Picture?
Squalane vs Other Oils: The Penetration Question
Squalane occupies a specific niche among hair oils: it is a lightweight, stable hydrocarbon that mimics the skin's natural squalene, absorbs quickly, and does not go rancid like plant oils. Compared with coconut oil, which penetrates the hair shaft, squalane sits more on the surface as a smoothing and frizz-control agent; it will not provide the deep conditioning that penetrating oils offer. Compared with argan or jojoba, squalane is lighter and less likely to weigh down fine hair, which makes The Ordinary's serum above a strong pick for fine-haired users who find most oils too heavy. The tradeoff: squalane's lightness means it does not protect as well against mechanical damage or provide the occlusive barrier that heavier oils give in harsh winter. The practical framework: use squalane as a daily finisher and frizz tamer on dry hair, and use a heavier penetrating oil as the weekly treatment for actual conditioning. On the scalp, squalane is one of the safer oils for acne-prone or sensitive scalps because it is non-comedogenic and stable; it moisturizes without the yeast-feeding risk of heavier plant oils. But it is not a treatment for dandruff or dermatitis; it soothes dryness only. For flake-specific oil guidance, the best oil for dandruff roundup matches oils to flake types.
How Much Squalane: Dosing by Hair Length and Density
Oil dosing is the most practical gap in hair oil content, and squalane's lightness makes over-application easy to miss until the hair looks limp. The dosing framework: for fine or short hair, two to three drops warmed between palms, applied to the mid-lengths and ends only. For medium-density shoulder-length hair, four to six drops. For thick or long hair, up to eight drops, still keeping it off the roots. The over-application fix that avoids a full rewash: dust a small amount of dry shampoo or arrowroot powder on the greasy sections, wait five minutes, and brush through; it absorbs the excess without stripping. Prevention beats correction: apply to damp hair rather than dry, because damp application distributes oil more evenly and you naturally use less. Never apply squalane or any oil to the scalp as a finisher unless the scalp is dry; oily scalps plus added oil equal buildup by evening. The weighed-down next-day problem that fine-haired users know well is almost always a dosing issue, not a product issue; halve the amount before blaming the formula. For scalp-specific application technique with massage benefits, the gua sha scalp guide covers tool-assisted methods.
Squalane Storage and Shelf Life: The Stability Advantage
Squalane's standout practical advantage is stability: unlike rosehip, flaxseed, or unrefined plant oils that oxidize within months, squalane resists rancidity for years. This matters because rancid oils do real harm; oxidized oils contain free radicals and off compounds that irritate the scalp and leave hair smelling stale. The signs any oil has gone bad: a sour, paint-like, or crayon smell replacing the neutral scent, a color shift toward yellow or brown, and a sticky rather than smooth texture. With squalane, these signs rarely appear before the two-year mark even at room temperature, but the bottle still deserves a cool, dark spot away from the shower's heat and humidity. Do not store any hair oil on the shower ledge; the heat and moisture cycling degrades even stable oils faster. Buy sizes you will finish: a huge bottle of a trendy oil that sits for two years is worse than a small fresh bottle, because oxidation starts at opening. Pump bottles beat droppers for longevity since they limit air exposure. If an oil smells off, discard it regardless of the expiration date; the nose knows before the label does.