Our best-selling Oi Oil delivers extraordinary softness, intense shine, and frizz control in every drop. This multi-purpose hair oil hydrates, detangles, and enhances combability. The film-forming properties of the oil tame the frizz while the naturally rich anti-oxidant Roucou oil, contribute to protecting the hair from environmental stressors without weighing it down.
Ideal for multiple hair types—dry, damaged, frizzy, curly, or colour-treated —Oi Oil is especially suited for medium to coarse textures. Whether used before styling or as a finishing touch, this hair oil leaves hair silky-smooth and radiant with a warm, long-lasting fragrance for an indulgent experience.
Trusted by professionals, Oi Oil is your go-to for healthy, luminous hair—every day.
Vegan friendly
This product does not contain any ingredients of animal origin.
Free delivery on orders over £50
Free samples when you create an account
How to get silky-smooth hair and control frizz with OI OIL:
Oi Oil can be used before styling or as a finishing touch.
Roucou oil is extracted from the seeds of Achiote, a plant native to the Amazon. The benefits of Roucou oil for hair are incredible: this oil has a high content of carotenoids, vitamin A and selenium, with protective and antioxidant properties which help reduce damage from external aggressors and treatments, contributing to a silky hair effect.
Feels like: Silky oil for a luxurious shine
Smells like: This hair oil will embrace your hair with an aromatic with hints of thyme and pine, sweet and floral, warm with musk and amber
For a sleek, silky finish and maximum frizz control, apply 2–3 pumps of oil to towel-dried hair before styling and drying. Then, reapply to dry hair, focusing on the lengths and ends. For curly hair, smooth the product through your curls, following their natural shape to ensure even hydration, and a natural frizz-free texture.
OI Oil is formulated to help hair feel soft and smooth. One of the most beneficial ingredients is Roucou oil, which is rich in beta-carotene and antioxidants. This ingredient, along with vitamin E and sunflower seed oil, helps to moisturize and nourish. The OI Oil also has a unique and long-lasting scent to help your hair smell fresh and clean for days.
Yes! OI Oil naturally adds shine and moisture to your hair, which helps to tame frizz and nourish strands. This oil won’t weigh down your hair or make it greasy.
We recommend applying OI Oil to your hair after washing and before styling. For added shine and moisture, you can also apply a small amount after styling. OI Oil works on both wet and dry hair. Typically, you only need to apply it during and after styling, but if you feel the need to reapply later, that's fine too. Just be careful not to overdo it—a little goes a long way to avoid making your hair too oily.
Yes! OI Oil works well for all hair types but it is especially beneficial for coarse and damaged hair. Coarse hair can be difficult to manage, being more prone to frizz and sensitive to environmental factors like humidity. The nourishing ingredients in OI Oil will help smooth the texture and control the frizziness of your coarse strands while repairing and preventing damage from styling and colouring.
Although OI Oil has protective properties that make it a styling staple for your hair care routine, we still recommend using a true heat protectant before applying heat. The OI All in One Milk is the perfect complement to OI Oil, helping to hydrate and detangle hair while also providing heat protection for up to 230°.
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