Argan oil earned its reputation honestly, then got put in everything until the word stopped meaning much. It is genuinely useful for a specific set of jobs and useless for others, and the difference comes down to how much of it you use and where you put it.
The short answer
Argan oil is a sealant and a smoother, not a moisturiser. It does not add water to hair — it slows water leaving. That makes it excellent applied over damp hair and largely pointless applied to bone-dry hair as a rescue.
What it does well
- Smooths a raised cuticle, which reduces frizz and increases shine.
- Reduces friction, so hair tangles less and breaks less when you comb it.
- Adds slip and heat protection before a blow-dry — a small amount, on the lengths.
- Locks in a leave-in or mask applied underneath it.
What it does not do
It does not repair damage. Oils sit on the outside of the strand; they do not enter the cortex and rebuild it. Hair feels dramatically better after oiling because the surface is smooth, which is why oil is so often mistaken for repair.
It also does not moisturise on its own. Sealing an already-dry strand traps the dryness in. This is the single most common way argan oil disappoints people — used as the only step rather than the last step.
How to actually use it
On damp hair, after washing. One to three drops for fine hair, up to a pea-sized amount for thick or long hair. Warm it between your palms, apply from the mid-lengths down, and keep it off the roots entirely.
As a finishing touch on dry hair. Half the amount you think, on the ends only, to knock down flyaways.
As an overnight treatment. A heavier application through the lengths, plaited, washed out in the morning. Once a week is plenty.
The failure mode is always the same: too much, too close to the roots. Argan oil is difficult to wash out, so an over-application usually means a second shampoo, which undoes the point.
Serum or mask?
A serum is for daily smoothing and shine — light, fast, sits on the surface. A mask pairs the oil with conditioning agents and time, so it does more for hair that is genuinely dry underneath. If your hair is both rough and thirsty, the mask is the one that changes anything; the serum finishes it.
Where to start
The Argan line is two products doing those two jobs: the Luxury Hair Serum for daily smoothing — free of sulfates, parabens and mineral oil — and the Luxury Moisture Therapy Repair Mask, which is formulated for chemically and colour-treated hair.
If your hair is dry rather than rough, moisture has to come before sealing — start on the dry and dehydrated hair page instead, then use the oil to lock it in.
