For many it's part of the morning routine while others can go days without doing this.
But an expert has revealed how often we should really be washing our hair.
And it turns out we should probably be reaching for the shampoo a lot less than expected.
Stylist Julian Farel says that while there's no rule and everybody's hair is different, most of us should probably be cutting back.
And he claims our hair will actually be less greasy if we do so, recommending washing your hair every two to three days.
Warning over potentially deadly POLLEN BOMB set to hit Edinburgh on Saturday
He said: "If you shampoo every day, it will strip your scalp of all its natural oils and could lead to dry, brittle hair."
Celebrity stylist Paul Cucinello told Women's Health that for hair that is badly damaged from too much styling people should probably take extra care and shampoo once a week.
The same goes for dry hair, although you can still condition your hair without shampooing every day.
And if you've been working out and are worried about sweaty hair, you can simply rinse it with hot water.
We at Edinburgh Live are in the business of asking all the really hard-hitting questions. So we really want to know – how often do you wash your hair? Feel free to vote in our poll below.
To receive one WhatsApp message a day with Edinburgh Live's headlines, as well as breaking news alerts, text NEWS to 07899067815. Then add the number to your contacts as 'Edinburgh Live'.
For more stories from across the Edinburgh area like our Facebook page or follow us on Twitter.
You can also subscribe to our newsletter: enter your email in the blue box at the top of this article.
