Olive Oil: Rich oil used in hot oil treatments

“`html

What is Olive Oil?

Olive oil is a natural plant oil that moisturizes and protects hair. It works by coating the hair shaft to seal in hydration and smooth the outer cuticle layer.

Think of it as a nourishing shield for your strands. Most people don’t know this: its main fatty acid, oleic acid, has a molecular size that closely matches the natural lipids in our hair’s cortex, allowing it to penetrate deeper than many other oils.

How Olive Oil Coats and Protects Your Hair

Olive oil acts as a physical barrier on each hair strand. Your hair cuticle, the outer layer, lifts up when it’s dry or damaged.

The oil fills in those gaps and lays the cuticle scales flat. Think of it like smoothing down the shingles on a roof to keep the rain out.

This seal prevents your inner cortex, the hair’s core, from losing its vital moisture. I see this sealing effect clearly under my microscope when clients use it consistently on dry ends.

When Olive Oil Penetrates vs. When It Just Sits

Not all hair absorbs olive oil the same way. Its ability to sink in depends heavily on your hair’s porosity, which is how open your cuticle layer is.

Think of high porosity hair like a sponge—it soaks up the oil quickly. Low porosity hair is more like a plastic bag; the oil mostly slides on the surface.

I advise clients with low porosity hair to use a tiny amount and apply heat from a warm towel. This slight warmth helps the cuticle open just enough for some absorption without causing greasy buildup.

The Surprising Downside of Olive Oil for Scalps

Putting olive oil directly on your scalp can backfire for many people. While it’s fine for some, it can worsen issues like seborrheic dermatitis or fungal overgrowth.

This happens because the oil can feed the natural yeast on your scalp. I’ve had clients come in with increased itching and flaking after nightly scalp oiling.

For scalp health, I prefer lighter oils like jojoba oil that mimic our skin’s sebum more closely. Save the olive oil for your mid-lengths to ends.

Olive Oil as a Pre-Shampoo Damage Blocker

One of my favorite clinical uses is as a pre-wash treatment. Applying it 20 minutes before shampooing creates a protective layer that reduces water absorption and swelling.

Hair swells and its protein structure weakens when wet. The oil barrier minimizes this. Think of it like putting lotion on your hands before doing the dishes.

This single step can cut down on hygral fatigue—the stress from repeated swelling and drying. My clients who do this notice their color fades slower and their hair feels stronger.

Mixing Olive Oil with Other Ingredients: The Good and Bad

Olive oil plays well with others, but not with everything. Combining it with honey or aloe vera can boost its moisturizing power for a deep treatment.

However, never mix it with protein-heavy ingredients like raw egg for a mask. The oil can trap the protein on the surface, creating a weird, rubbery film on your hair that’s hard to wash out.

I’ve seen this strange film cause more tangles and breakage. If you want protein, use a dedicated protein treatment separately in your routine.

Will It Work For You?

Yes

• If you have medium to high porosity hair that drinks up moisture.
• When your ends are dry, brittle, and feel like straw.
• If you frequently use heat styling or chemical services like hair color and need a sealant.

No

• If you have fine, low porosity hair that gets weighed down easily.
• When you have an oily scalp or active scalp conditions like dermatitis.
• If you dislike rich textures and prefer lightweight, dry-feeling oils.

From My Experience

In my clinic, the biggest mistake is using too much. A quarter-sized amount for thick, long hair is often plenty. Warm it between your palms first to make it easier to spread evenly.

I consider it a “repair and maintain” oil, not a “grow and stimulate” oil. It won’t magically make hair grow faster from the follicle, but it will drastically reduce breakage along the length.

This means you retain more of your growth. For the best results, use it as a targeted treatment on ends, not an all-over hair and scalp cure-all. Consistency with small, correct amounts beats a heavy, occasional soak every time.

“`