Hair oil in summer: 5 myths vs. reality!

You’d think we’d have learned by now. Every summer, we talk about sunscreen, SPF, and staying hydrated when the heat hits. But when it comes to hair care, we fall back into the same bad habits: a quick spritz of sea salt spray, a dab of serum on the ends and above all, no oil. Because “it makes your hair greasy”, “oil burns in the sun”, or worse: “it damages your hair”. Urban legends, often spread by hairdressers or brands that rely on ultra-chemical formulas… Yet none of these claims are actually true.

But what if the very product they demonize, oil, is exactly what your hair needs? What if a natural hair oil didn’t just nourish, but also protected? What if it didn’t weigh your hair down, but actually strengthened it? What if it didn’t make your hair greasy, but instead helped balance sebum production?

At Hairborist, we’ve known this for over 30 years: a natural hair oil isn’t a risk, it’s your savior, your secret weapon, your best ally. Especially in summer, when your hair faces constant attacks from sun, salt, chlorine, and wind. That’s when oil makes all the difference, between breakage and shine, between straw-like strands and radiant locks.

In this article, we’ll debunk the five most persistent myths about using hair oil in summer. More importantly, we’ll show you how to use it the right way, so your hair can truly shine this season. After reading this, don’t be surprised if you find yourself unpacking your suitcase just to add a bottle of hair oil.

Myth 1: “Hair oil makes your hair greasy”

What many people believe:

If your hair tends to get oily quickly, oil treatments are probably the last thing on your mind. Especially in summer, when heat makes you sweat more and your scalp gets oilier even faster. Adding oil on top of that? Sounds like a terrible idea… right?

The reality:

This line of reasoning makes sense and seems logical at first. But in truth, it’s the type of oil you use that makes all the difference.

Silicone-based or mineral oils, often found in chemical hair serums or shine sprays, sit on the surface of the hair like an occlusive film. They seal the hair cuticle without actually nourishing it. Under the summer sun, these oils can weigh the hair down or build up on the scalp, leading to residue, itchiness… and eventually imbalance. Even some vegetable oils, if poorly chosen, can be comedogenic, clogging the pores and disrupting the scalp’s natural sebum production.

However, when you choose the right natural hair oils, selected for their properties and low comedogenic rating, the result is completely different.

Cold-pressed oils like jojoba, argan, macadamia, or sesame are great examples. Their composition closely mimics human sebum, making them highly compatible with the scalp. As a result, they are easily absorbed, penetrate deep into the hair fiber, and nourish the scalp without making it greasy.

This process soothes the sebaceous glands, which no longer feel the need to overproduce sebum to make up for a deficiency. Contrary to popular belief, an oily scalp is often the result of an initial lack of sebum: the glands go into overdrive trying to restore balance. By providing this nourishment externally, you actually help to naturally regulate sebum production.

The result? Softer, stronger hair, a calmer scalp, and less greasy roots over time.

Hairborist’s tip:

Our Repair oil treatment was specially formulated to nourish and repair hair without making it greasy. It combines cold-pressed plant oils like jojoba, wheat germ, argan, and macadamia, delivering intense nutrition while respecting the scalp’s natural balance.

If your roots tend to get oily, add a few drops of Aromasynergie Balans. This essential oil blend, featuring Cypress and Litsea, was designed specifically to rebalance oily scalps over the long term.

It’s not a harsh, stripping treatment (a common mistake when dealing with oily hair), but rather a regulating and harmonizing care solution.