How often should you apply a hair oil?
Two to three times a week. Not every day. And the reason is not the one you think: the problem is not the oil, it is what the oil forces you to do next.
Every application is also a wash
A rinse-off oil does not come out with plain water. It requires a shampoo. Applying every day therefore means washing your hair every day — and it is daily washing, not the oil, that eventually irritates a scalp.
The right reasoning is therefore not « how often can I apply oil », but « how often do I wash my hair ». Line one up with the other and the question disappears.
In practice
- You wash 2 to 3 times a week — apply the oil before each shampoo. This is the simplest and most common case.
- You wash every day — do not add an oil every time. Two to three applications a week are enough; on other days you simply wash.
- You wash once a week — then it is once a week, and you can be generous with quantity and leave-on time.
The « more is better » trap
Doubling the frequency doubles nothing. What happens with hair care happens over weeks, not over one extra application: hair follows a slow biological cycle that sets its own pace — which we explain here. A routine kept up for three months at twice a week is infinitely better than one intensive week followed by forgetting about it.
Two signals telling you to ease off
- Your roots turn greasy faster than before. Space it out, and above all stop applying to the scalp — the lengths are enough.
- Your hair stays heavy after drying. That is not a frequency question but a rinsing one: some is left behind. Rinse longer, or reduce the quantity before reducing the number of applications.
At comai.
Both oils are designed for 2 to 3 applications a week, 5 to 7 mL each time. A 100 mL bottle therefore covers about six weeks at that pace — which is deliberate: it is roughly half a three-month course, hence the two bottles in the full course.
