Why Oils Matter for Curly Hair (and How to Use Them the Right Way)

Curly hair and oil have a complicated relationship. A lot of people assume oil hydrates hair. It doesn't. Oil is fantastic for curls when you use it properly, but it can also leave hair feeling dry if you apply it the wrong way. Here's how I explain it to clients in the chair.

Oil vs. Hydration: What's the Difference?

First, it helps to separate two ideas.

• Hydration means water. Curls get hydrated when water-based products, like leave-in conditioners, creams, or gels with water listed first, penetrate the hair shaft. Hair absorbs water best when it's wet.
• Oil means sealing. Oil doesn't deliver water. It acts as a barrier that holds hydration inside the strand. Once water is in, oil slows down evaporation and protects the cuticle.

Think of your hair like skin. You'd apply a moisturiser first, then finish with body oil to keep that moisture from escaping.

How Oil Can Work Against You

Trouble starts when oil goes on dry hair before hydration. Here's why.

1. Oil coats the hair shaft.
2. That coating repels water.
3. When you try to spray water or apply a hydrating product, it can't get through.

The result is hair that feels greasy on the outside but stays thirsty inside. That's where the myth that "oil dries hair out" comes from. Oil doesn't remove moisture, but it can trap dryness if you use it in the wrong order.

How to Use Oil for Healthy, Defined Curls

Used correctly, oil transforms curls. It brings shine, tames frizz, and helps define your natural pattern. Here are three ways I use it with clients.

1. On Soaking Wet Hair (Most Effective)

• Wash and condition as usual.
• While hair is dripping, apply a water-based leave-in or curl cream.
• Add gel for hold if you use it.
• Finish with a few drops of oil rubbed between your palms and glazed over your wet hair before drying.

This technique seals in hydration and keeps curls bouncy for longer.

2. As a Finisher

• Once your hair is fully dry, take 1 to 2 drops of oil, rub it between your hands, and scrunch lightly.
• This softens the gel cast, adds shine, and reduces frizz without flattening curls.

3. As a Pre-Shampoo Treatment

• Shields strands from harsh shampooing.
• Helps break down build-up.
• Protects the scalp.

Because you wash it out, it won't block hydration later.

Which Oils Work Best?

• Light oils for fine or medium hair: jojoba, argan, grapeseed, almond.
• Richer oils for thick or coarse hair: coconut, avocado, olive.

Choosing the right oil depends on your hair's density and porosity. Start light and adjust from there.

I formulated my SILK Enriched Argan Oil Serum to work well across hair types, so it's a solid starting point whether you're fine and wavy or thick and coarse.

The Golden Rule: Water First, Oil Last

To keep curls strong and healthy:

1. Hydrate with water-based products.
2. Seal with oil to lock it in.
3. Skip applying oil to dry hair unless it's before a wash.

Stick to this order and you'll get shiny, defined curls without losing the hydration they need.