Best Argan Oil and Hair Serum for Frizz and Shine (UK Buying Guide)

A bottle of argan oil hair serum on a cloth
Photo by Denise Chan on Unsplash

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Quick answer

The best argan oil for hair is cold-pressed, 100% pure argan (ideally with no added silicones if you want a clean oil), used a few drops at a time on damp or dry ends to smooth frizz and add shine. A silicone-based hair serum gives faster, glossier smoothing and humidity resistance — many people keep both.

A few drops of argan oil or a good hair serum is the classic finishing touch for frizzy hair — instant shine and smoothness. The catch is choosing the right one and using a tiny amount. Here's the guide.

Argan oil vs hair serum

  • Pure argan oil — a natural, single-ingredient oil rich in fatty acids and vitamin E. Smooths, nourishes and adds shine; a "cleaner" choice.
  • Hair serum — usually silicone-based, giving faster, glossier smoothing and stronger humidity resistance. More high-performance, but it sits on the hair rather than nourishing it.

Many people keep both: a serum for sleek, humidity-proof days and pure oil for nourishing shine.

How to choose

For argan oil:

  • Cold-pressed, 100% pure argan (look for "Argania Spinosa Kernel Oil" as the main ingredient).
  • Ideally no fillers if you want a clean oil.
  • Dark glass bottle (protects the oil from light).

For a serum:

  • Look for dimethicone/cyclomethicone for smoothing + humidity resistance.
  • Lightweight if your hair is fine; richer if coarse.
  • Bonus: heat/UV protection.

Our specialist picks

How to use it (the key is "less")

  1. Dispense 1–3 drops and warm between your palms.
  2. Smooth over mid-length to ends — never the roots.
  3. Add to damp hair before drying for smoothing, or to dry hair to finish and tame flyaways.
  4. Build up only if needed — too much looks greasy, especially on fine hair.

Argan oil and serums are the finishing step of a good anti-frizz routine — pair with a leave-in conditioner, a sulfate-free shampoo and heat protection. For frizz handled at the source, explore our smoothing treatments.

Frequently asked questions

Is argan oil good for your hair?

Yes — used sparingly, it smooths the cuticle, tames frizz and adds shine, and it's rich in fatty acids and vitamin E. The trick is a few drops on the ends, not the roots, so it doesn't look greasy.

Argan oil vs hair serum — which is better?

Pure argan oil is a natural single-ingredient option; a hair serum usually contains silicones that give faster, glossier smoothing and better humidity resistance. Neither is 'better' — oil is cleaner, serum is more high-performance.

How much argan oil should I use?

Start with 1–3 drops warmed between your palms, applied to mid-length and ends. Build up only if needed — too much weighs hair down.

Can I use argan oil on keratin-treated hair?

Yes, a small amount on the ends adds shine and helps frizz control between washes, complementing your treatment.

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