Hair & Sun: 5 Plant Oils That Really Help Protect Hair from UV Rays

UV rays, combined with sea salt and swimming pool chlorine, weaken keratin, the main structural protein of the hair fibre. As a result, hair can become dry, dull and more prone to breakage. Plant oils rich in fatty acids help reinforce the hair's natural lipid barrier, making it more resilient against these external stressors.

Unlike the chemical UV filters sometimes found in sun care products for hair, plant oils are free from these types of ingredients. They offer a natural, sensorial way to help protect and nourish the hair, with a range of lightweight to richer textures and subtle natural scents. However, they are not a substitute for sunscreen on the skin and are best used alongside other protective measures, such as wearing a hat, braiding long hair and rinsing your hair after swimming.

If you're looking for a natural, ready-to-use solution, Aroma-Zone's Karanja & Raspberry Protective Hair Oil is an excellent choice. Formulated with Karanja oil, renowned for its natural UV-filtering properties, and antioxidant-rich raspberry seed oil, it helps protect the hair fibre from sun-induced damage while enhancing shine. Its lightweight, non-greasy texture is easy to apply to dry or damp hair before or during sun exposure. The perfect travel-friendly treatment for summer, it combines effective hair care with a luxurious sensory experience.

Naturally rich in pongamol, a plant-derived compound recognised for its photoprotective properties, Organic Karanja Oil is an excellent choice for sun-exposed hair. Applied before swimming or as a nourishing hair mask, it coats the hair fibre with a protective film while providing lasting nourishment. At Aroma-Zone, it is recommended as an ideal ingredient for DIY sun care formulations, particularly for dry or colour-treated hair.

Recognised for its deep orange-brown colour, Buriti Oil owes its rich hue to its exceptionally high content of provitamin A (beta-carotene). A powerful antioxidant, it helps neutralise the free radicals generated by sun exposure. It helps protect hair from the damaging effects of the sun while enhancing its natural shine. It can be used on its own or blended with a lighter oil, such as jojoba oil, for a more lightweight finish.

Often used as a base in natural tanning oils, Organic Sesame Oil is also an excellent choice for protecting your hair from sun exposure. It is particularly valued for its ability to help filter some UV rays while keeping the hair soft, supple and naturally shiny.

Very similar to human sebum, organic macadamia oil penetrates the hair shaft easily. It is particularly useful for protecting fine or limp hair that tends to dry out in the sun. Thanks to its unsaturated fatty acids, it helps retain moisture within the hair shaft and reduces breakage caused by UV rays.

Although well known for its nourishing properties, organic coconut oil also offers some ability to filter out UV rays. It is ideal as a pre-sun treatment, especially for exposed lengths and ends. Applied in a thin layer, it coats the hair without weighing it down, whilst leaving it delicately scented. At Aroma-Zone, it is available in its pure form or in ready-to-use blends for summer hair care.

For effective UV protection, apply a small amount of plant-based oil to the lengths and ends of your hair before any sun exposure. If you’re heading to the beach, opt for a bun or a plait to minimise friction and dehydration. In the evening, a gentle wash followed by a moisturising treatment such as an aloe vera gel mask will help rid your hair of salt or chlorine without stripping it. These oils can also be incorporated into your serums or homemade hair treatments, depending on the desired texture.

To choose the right oil for your hair in summer, see our feature: Hair oil in summer: an underestimated danger?