Argan oil is the better choice for most hair types. It’s lighter, absorbs faster, and works well as a daily treatment without leaving hair greasy or weighed down. Olive oil has its place as a deep conditioning treatment for very dry or coarse hair, but its heavier texture and potential scalp drawbacks make it a more limited tool.
The real answer depends on your hair type and what you’re trying to accomplish. Here’s how the two oils compare on the specifics that actually matter.
Weight and Texture on Hair
This is the single biggest practical difference between the two oils. Olive oil is thick and heavy. It takes longer to absorb into the hair and can easily leave a greasy residue, especially on fine or medium-textured hair. If you don’t rinse it out thoroughly, it will weigh your hair down and make it look flat and oily.
Argan oil is noticeably lighter. It absorbs quickly and leaves a non-greasy finish, which is why so many hair products use it as a key ingredient. You can apply a small amount to damp or dry hair and leave it in without your hair looking like it hasn’t been washed. For fine or oily hair, this difference alone makes argan oil the clear winner. For thick, coarse, or extremely dry hair that needs intense moisture, olive oil’s heaviness actually becomes an advantage when used as a pre-shampoo mask or deep treatment that gets washed out.
How Each Oil Moisturizes
Both oils are rich in oleic acid, the fatty acid most associated with penetrating the hair shaft rather than just sitting on the surface. Olive oil contains roughly 65 to 80 percent oleic acid, while argan oil averages about 47 percent. That higher oleic acid concentration helps olive oil penetrate deeper into the hair cortex, delivering moisture to the interior structure of the strand. This makes it effective for hair that’s severely dried out or damaged, where surface-level conditioning isn’t enough.
Argan oil takes a different approach. It contains about 33 percent linoleic acid alongside its oleic acid, and research in the International Journal of Trichology notes it has strong water-holding capacity. Rather than soaking deep into the shaft, argan oil excels at smoothing the outer cuticle layer and locking existing moisture in. The result is hair that feels softer and looks shinier without needing a heavy application. It also contains between 600 and 900 mg of vitamin E per kilogram, a potent antioxidant that helps protect hair from environmental damage and keeps strands looking healthy over time.
Heat Protection
If you regularly use flat irons, curling irons, or blow dryers, argan oil has a notable advantage. Its smoke point sits around 420°F, which means it can withstand the heat from most styling tools without breaking down. When applied before heat styling, argan oil forms a lightweight barrier around the hair strand that helps seal in moisture and reduce the drying, brittling effect of high temperatures.
This doesn’t make argan oil a replacement for a dedicated heat protectant spray, but it does add a meaningful layer of defense. Olive oil is less commonly used for this purpose because of how heavy it feels on hair and how difficult it is to apply in the small amounts heat protection requires.
Scalp Health: A Caution With Olive Oil
This is where olive oil has a real downside that most people don’t know about. Olive oil’s high oleic acid content can feed Malassezia, the yeast naturally present on your scalp that’s involved in dandruff and seborrheic dermatitis. In lab settings, Malassezia requires a lipid supplement like olive oil just to grow. One study found that after seven days, Malassezia grew well in olive oil, prompting researchers to suggest that applying common hair oils like olive oil directly to the scalp may encourage yeast overgrowth and worsen flaking and irritation.
If you’re prone to dandruff, an itchy scalp, or seborrheic dermatitis, applying olive oil to your scalp is worth avoiding. Argan oil, with its lower oleic acid content and higher linoleic acid ratio, is generally better tolerated. Linoleic acid has been associated with healthier skin barrier function, and argan oil doesn’t carry the same level of concern for feeding scalp yeast.
Best Uses for Each Oil
- Argan oil as a daily leave-in: Apply a few drops to damp hair after washing, focusing on the mid-lengths and ends. It adds shine and softness without buildup, and works on virtually every hair type.
- Argan oil before heat styling: A light application before blow drying or using hot tools helps protect strands from heat damage up to 420°F.
- Olive oil as a deep conditioning mask: For thick, coarse, or very dry hair, coat your hair with olive oil 30 minutes before shampooing. The heavy texture works in your favor here because you’re washing it out. This is not an everyday treatment; once a week or every two weeks is typical.
- Olive oil for split ends: A tiny amount smoothed over dry, damaged ends can temporarily seal and smooth them. Use sparingly to avoid greasiness.
Which Oil to Choose
For most people, argan oil is the more versatile and practical choice. It works across hair types, absorbs without residue, protects against heat, and is gentle enough to use daily without weighing hair down or irritating the scalp. If your hair is fine, normal, color-treated, or oily, argan oil is the straightforward pick.
Olive oil earns its spot in a more specific role. If you have thick, coarse, or extremely dry hair that needs deep, penetrating moisture, an occasional olive oil treatment can deliver results that lighter oils can’t match. Just keep it on the hair shaft rather than the scalp, and always shampoo it out thoroughly. Using both oils for different purposes is a perfectly reasonable approach: argan for everyday care, olive oil for occasional intensive conditioning when your hair needs it most.