Oils for Your Hair Type

How oils actually differ

• Viscosity — how thick and slow-moving the oil is
• Spreading — how readily it distributes over the fibre surface
• Lubrication — how much it reduces friction between strands
• Penetration — whether the oil enters the fibre, which varies by oil and is better supported for some than others
• Film and deposition — what it leaves behind on the surface
• Perceived weight — how rich or heavy it feels once applied

A note on penetration

Laboratory work has found differences between oils in how they interact with the fibre. Coconut oil, with its predominant lauric acid and straight-chain structure, has been reported to reduce protein loss in treated hair, while some other oils showed less of this effect.

That's a real finding, but it's a narrow one. It does not make coconut oil correct for everyone, and it does not rank oils overall.

Practical starting points

These are starting points to try, not universal rules. Any oil can work or fail depending on amount, method and the rest of your routine.

If your strands are fine

Fine strands can become weighed down more easily by rich layering. Lighter applications may be a useful starting point.

This doesn't mean fine hair cannot use richer oils. Amount and total formula matter. A few drops in a formulated serum are different from coating the hair in pure oil.

If your strands are coarse

Coarser fibres are stiffer and may tolerate richer conditioning and deposition without the style visibly collapsing.

Richer does not automatically mean better. Heavy layering can still leave hair dull, limp at the roots or harder to cleanse.

Porosity behaviour is a separate question

Porosity describes how the fibre exchanges water, not how much weight it can carry. Hair that wets and dries quickly may benefit from products that slow moisture loss; hair that resists wetting may do better with warmth, water-first application and lighter layers.

Never collapse the two traits. Fine hair with higher-porosity behaviour and coarse hair with lower-porosity behaviour are both common, and they want different things.

Method changes the outcome as much as the oil

• Applying to damp hair distributes far less product than the same amount on dry hair.
• Pre-wash oiling and leave-in oiling are different jobs with different amounts.
• Emulsifying between palms before application prevents concentrated patches.
• Start with less than you think and add if needed — you can't take it off.