Whether you’re looking to reduce frizz, grow longer hair, add shine, or show your scalp a little love, hair oils are a true miracle. But with so many options, which oils are best for your hair - and how should you apply them? We explain all.
There’s something quietly powerful about running oil through your hair. Maybe it’s the ritual… warming a few drops between your palms, smoothing it through your ends and breathing in the soft, natural scent. Or maybe it’s that moment of calm where you’re doing something that’s purely nourishing.
But while hair oils have been used for centuries, knowing exactly how to oil hair can feel confusing. What’s the difference between hair treatment oils and finishing oils? Should you apply it every day, or once a week? Is coconut oil for hair really a miracle, or just another trend?
In this guide, we’ll walk through common questions, demystify the science behind different hair oils, and help you choose the best hair oil for your hair type, goals and routine.
Treatment oils vs. finishing oils: what’s the difference?
Let’s start with the basics. Not all hair oils are used the same way, and knowing the difference is key.
- Hair treatment oils are your go-to when your hair needs serious TLC. These oils are massaged into the scalp and lengths before washing, then left to soak in. Sometimes for 30 minutes, sometimes overnight. This gives oils time to penetrate the hair shaft, nourish the scalp, and improve elasticity, strength and hydration. They work like a deep conditioning mask but with natural, plant-based ingredients.
Common examples of treatment oils include coconut oil, olive oil, or blends that feature ingredients like rosemary oil for hair growth. These oils are richer and heavier, designed to soak-in over time.
- Finishing oils, on the other hand, are much lighter. They’re applied after washing and styling - just a few drops smoothed through the mid-lengths and ends. They help lock in moisture, add shine, smooth flyaways and even protect against pollution or UV exposure. They’re an easy yet luxurious habit. Think of them like your favourite daily moisturiser, but for your hair.
Knowing which type of oil to use (and when!) is key to making the most of your hair oil routine.
What oils are best for hair?
Now let’s talk about ingredients. With so many options (such as argan, linseed, coconut, tea tree and even olive oil), it helps to understand which oils actually work for hair, and why. Each oil has a different composition. Some are richer in fatty acids, others are high in antioxidants or vitamins. And that chemical makeup determines how they behave on your hair.
Here are eight of the most effective hair oils and the science behind them.
1. Argan oil
Nicknamed “liquid gold”, argan oil for hair is one of the most versatile and universally loved oils. Used for centuries in Moroccan beauty rituals, it’s now found in salons and routines worldwide.
One of the reasons argan oil works so well is its high content of vitamin E, antioxidants and fatty acids, which deeply nourish and seal the hair cuticle. This makes it especially useful for reducing frizz, adding shine and preventing breakage. It even helps guard against UV and heat damage and improves hair health after colouring. Unlike heavier oils, it won’t sit on top of your hair and weigh it down. Instead, argan oil absorbs quickly, working its magic behind the scenes to hydrate and smooth.
So if you’re asking what is argan oil good for, the answer really is: almost everything. It strengthens weak strands, restores moisture to dry ends, and adds a soft, luminous shine.
2. Coconut oil
Coconut oil has been used for generations in South Asian and Afro-Caribbean hair traditions, and with good reason. It contains lauric acid, a fatty acid that binds with the natural proteins in your hair. This helps reduce protein loss during washing, which is especially helpful if your hair is coloured, bleached or frequently heat-styled.
Coconut oil has also been shown to improve the scalp’s microbiome (which in turn reduces issues like dandruff) as well as reduce damage associated with routine washing.
As a hair treatment oil, it works beautifully before washing, helping protect the hair shaft during cleansing. That said, coconut oil is relatively heavy. Its small molecular size means it penetrates easily. If used in large amounts on finer hair types, it can sit on the surface and cause build-up. That’s why it’s often a luxurious addition to hair finishing oils - just enough to soften and condition, without any greasiness.
3. Linseed (flaxseed) oil
Linseed oil, also known as flaxseed oil, is an unsung hero in haircare.
It’s rich in antioxidants and omega-3 fatty acids, essential for healthy hair growth and elasticity. These fatty acids soothe inflammation, moisturise the scalp, reduce flaking and support strong, smooth, flexible strands that resist frizz, snapping or breaking. Yes, it’s a lot!
What’s unique about linseed oil is how well it pairs with other ingredients. On its own, it offers gentle strength-building and shine. But when blended, it acts as a natural binder giving hydration and nourishment.
4. Almond oil
Lightweight, nourishing and full of vitamin E, almond oil is a brilliant choice for everyday use, especially on fine or straight hair. Studies have shown that almond oil helps prevent UV damage, softens hair, increases elasticity and reduces protein loss. It smooths frizz without weighing the hair down and is often used in vegan hair care blends due to its mild, hypoallergenic profile.
5. Jojoba oil
What makes jojoba oil special is how closely it mimics the natural sebum our scalps produce. This makes it a great choice for balancing oily or dry scalps, restoring moisture and promoting hair growth. It’s also a safe carrier for stronger essential oils like tea tree or rosemary.
6. Tea Tree oil
Known for its antifungal and antimicrobial properties, tea tree oil is excellent for dandruff or scalp irritation. It’s not used alone (you’ll have to dilute it with a carrier oil), but it adds scalp-soothing power to any oil mix.
7. Rosemary oil
Rosemary oil for hair has been shown to stimulate blood flow in the scalp, encouraging healthy hair growth. Some studies even show it performs similarly to minoxidil (the active ingredient in many hair loss treatments), without the side effects. As such, it’s a great addition to any hair growth oil blend.
8. Olive oil
A classic for a reason. Olive oil is thicker and heavier than most hair oils, but it’s excellent for moisturising coarse or highly porous hair. It protects against UV damage due to something called “hydroxytyrosol” as well as helping with conditions like psoriasis.
However, olive oil is generally best used as an occasional pre-wash treatment, due to its weight and slow absorption.
What’s the healthiest oil for your hair?
It’s hard to name a one-size-fits-all winner (as different oils work hard for different issues!), but if we had to pick a top contender, argan oil takes the crown.
Why? Because it offers an ideal balance between nourishment and manageability. It’s rich in nutrients like vitamin E and essential fatty acids, but it’s still lightweight and fast-absorbing. It works across multiple hair types, from straight and fine to thick and coily, and offers benefits at every stage of your hair care routine.
Argan oil is also one of the safest oils for colour-treated hair and is often used to reduce the appearance of split ends, smooth the cuticle, and protect against environmental damage. So if you’re after shine, softness and strength, without grease or buildup, argan oil for hair is a brilliant choice.
Which oil mixture is best for hair?
As we’ve seen, some oils are powerful on their own. But often, the best results come from blends.
Our bespoke Phoenix Crown Hair Oil is crafted with a luxurious mix of argan, linseed and coconut oils - each selected for their unique benefits and how they complement one another. Here’s why we think it’s the best combination:
- Argan oil hydrates dry strands, gives instant gloss and lightweight protection
- Linseed oil supports long-term strength, elasticity and scalp health
- Coconut oil adds softness, deep moisture and prevents protein loss.
Together, they make a balanced, high-performance oil that works beautifully on most hair types. Whether you’re straightening your hair, embracing your curls or simply air-drying, this trio nourishes and protects from root to tip.
Plus, it’s part of our commitment to vegan certified hair care, meaning it’s cruelty-free and made from natural plant oils. Better for your hair, better for the planet.
How to use finishing oil on hair: step-by-step
We’ve explored the best oils and winning combinations for your hair. But knowing how to apply finishing oil is just as important as selecting the right one. A few drops, applied with care, can make all the difference - smoothing frizz, protecting against damage, and leaving your hair with a natural, healthy-looking finish.
Used well, finishing oil becomes more than just a styling product. It’s a quiet yet powerful final step in your routine: sealing in moisture, adding softness and offering a subtle layer of protection with every use.
Here’s how to get the most out of any finishing oil.
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Start with clean hair: Finishing oil can be used on freshly washed, towel-dried hair, or lightly applied to dry, styled hair for a touch of refinement
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Dispense 1–3 drops into your palm: For fine or shorter hair, begin with just one drop. You can always add more if needed
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Rub your hands together: Warming the oil gently in your hands ensures an even, delicate application
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Apply through the mid-lengths and ends: Focus on areas that become dry or prone to frizz. Avoid the roots unless your scalp feels particularly dry
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Use your fingers like a comb: This distributes the oil evenly and enhances softness and manageability
- Tame flyaways as needed: With any oil left on your hands, lightly smooth down flyaways or add polish to areas that need it.
A small amount is often enough. Over time, regular use of finishing oil helps protect against environmental stress, softens ends and enhances the natural texture of your hair - bringing strength, shine and balance with every drop.
How often should I oil my hair?
This is one of the most frequently asked questions, and rightly so. But the answer isn’t simple. It depends on your hair type, lifestyle, and whether you’re using a treatment oil or a finishing oil. The key is consistency - paired with a little intuition about what your hair really needs.
If you’re using a hair treatment oil
Start once a month. Apply generously to dry hair and scalp, letting it soak in for at least 30 minutes. For deeper nourishment, leave overnight. Then rinse thoroughly with a gentle shampoo.
If your hair is dry, textured or prone to breakage, you might increase to weekly. But always let your hair guide you. Over time, you’ll find the rhythm that feels right.
If you’re using a finishing oil
Finishing oils can be used daily or every other day, particularly after washing, blow-drying or using heat tools. A small amount on the mid-lengths and ends will seal in moisture, reduce frizz and maintain softness throughout the week.
Just a reminder: less is more. Applying too much oil, especially on fine or low-porosity hair, can weigh things down. But when used thoughtfully, oils can bring strength, protection and a lasting sense of self-care to your routine.
Do you put hair oil on wet or dry hair?
This is another question that comes up, and the good news is there’s no “right” answer. Hair oil can be applied to wet or dry hair, depending on the effect you’re looking for.
On damp hair
Apply a few drops after washing, while your hair is still towel-dried but not dripping. This locks in moisture, reduces tangles and creates a smooth base for styling—whether you’re blow-drying or letting your hair dry naturally.
On dry hair
A light touch of oil on dry hair is perfect for smoothing flyaways, adding a soft sheen and reviving your style between washes. It’s also an elegant finishing step before heading out - or simply adding a bit of polish to your day.
Many people find the best results come from a combination of the two: a little oil post-wash to protect and condition, and another light application on dry hair to maintain shine and softness. As with all things in hair care, a little experimentation helps. Let your hair and your daily routine guide you.
Should a hair treatment oil be used overnight?
To finish off, let’s talk about deep nourishment. Leaving a hair treatment oil overnight can be incredibly rewarding. But it isn’t essential, and it won’t suit everyone.
Overnight oiling gives your hair and scalp more time to absorb all the goodness. This can be especially helpful if your hair is coarse, highly porous, or in need of repair. Heavier oils like olive or coconut are commonly used overnight due to their deep conditioning properties.
That said, there are a few things to keep in mind:
- Use a silk scarf, bonnet or towel to protect your pillow
- Don’t overdo it. Start with a few teaspoons, not handfuls
- Wash thoroughly the next morning to avoid residue, product build-up or greasiness. Choose gentle, high-quality shampoos and conditioners like the carefully-crafted Phoenix Crown range
- If you have acne-prone skin, avoid applying thick oils too close to your hairline. If oils get on your skin, they can sometimes clog pores.
Hair oil is a beautiful thing. But like all good things, it’s best used in moderation and with the right technique. The key? Choose high-quality, natural oils. Use small amounts. And build a routine that suits your hair’s unique needs.
Final thoughts: hair oils as a daily act of care
Hair oils aren’t just products - they’re part of a ritual. A way to connect with yourself and your hair. Whether you’re adding a few drops for shine, doing a deep treatment before bed, or choosing the best hair oil for hair growth, it’s an act of self-care.
At Phoenix Crown, we believe in luxurious simplicity. Our natural, cruelty-free, vegan certified hair care range is designed to give results you can feel. No fuss, no compromise. The Phoenix Crown Hair Oil is a carefully balanced blend of argan, linseed and coconut oil, helping you nurture, protect and love your hair - day by day, drop by drop.
