Depending on the amount and length of your hair, washing it can feel like a chore. But if you lean on dry shampoo a lot, you may miss the signs that you don’t wash your hair enough – all of which risks scalp problems that could, in extreme cases, even lead to hair loss.

How often should I wash my hair?

Ah, the million dollar question. It’s actually difficult to generalise about how often you should wash your hair as this routine depends on a few factors. If your scalp is dry or your hair is very thick and you don’t use many styling products, you may be able to get away with washing your hair just once a week.

But this isn’t a universal rule.

If you think of your scalp as an extension of the skin on your face, it’s worth thinking about your hair wash in the same way as cleansing. Do you style your hair a lot? Do you live in a city? Do you use a lot of dry shampoo? Do you already have dandruff? Is your scalp oily? These are all factors that might mean you should be washing your hair more often – i.e. every two to three days – to give your scalp and roots a thorough cleanse.

Five signs that you aren’t washing your hair enough

From obvious signs such as greasy hair to scalp problems and even hair loss, here are five signs that mean you might need to wash your hair more regularly:

1. Greasy hair

The most obvious signs that you’re washing your hair too infrequently are greasy roots and a lack of volume. If you don’t regularly wash the excess sebum from your scalp, your hair will become stringy and heavy. For some people, this happens one or two days after washing; for others, it takes longer.

If you wear a hat for extended periods, it can also “trap heat and moisture close to your scalp, potentially leading to sweat and a buildup of moisture,” says consultant trichologist Samantha Stewart, who has partnered with LloydsPharmacy Online Doctor. “This can create a humid environment that may contribute to scalp issues like dandruff for individuals who are susceptible to scalp conditions.” It can also mean your hair gets greasier faster.

2. Dandruff formation

Our scalp continuously produces sebum, an oily secretion that protects and moisturises the skin and hair. If you don’t regularly wash your hair, sebum can accumulate on the scalp.