Some questions have neat, definitive answers, but how often should you wash your hair is not one of them. The answer to this age-old beauty query rests on a multitude of factors, from hair type and styling habits to lifestyle and even the area you live in.
And that's probably why so many of us get the calculation wrong. It's all very well having the best shampoo and conditioner for your hair type, but if you're not using them correctly, you can trigger anything from oily roots to rapid colour fade, dry ends or a sensitised scalp.
So, we've called in the professionals to set some guidelines on when a wet cleanse is required vs a spritz of your best dry shampoo. These clear, easy-to-follow instructions will help you finesse the optimum wash cycle for you and your 'do.
Hairdressers explain how often you should wash your hair
The main factor that dictates when to shampoo is hair type, explains expert stylist and owner of Salon 64, Ricky Walters. "Those with thick, dry, dehydrated hair should only be washing around once a week. For those with fine hair lacking volume, a light shampoo every other day should be all that’s needed."
Essentially, it's a balancing act with the natural oils in your hair, as over-washing can strip them but under-washing can overload your scalp. If your hair sits in the middle, in terms of thickness and natural hydration, then your answer will lie in the middle of those two frequencies.
As well as hair type, think about your lifestyle. Perhaps you love a sweaty spin class or have an active job, live in a polluted city, or by the sea and love to wild swim. If so, you should shampoo a little more often. The most crucial thing is to pay attention to what your hair is telling you. Check in with how your scalp, roots, and ends feel and look after one, two, or three days without washing. "More often than not, clients wash their hair out of habit rather than if the hair truly needs it or not," says Walters.
Specially formulated to boost volume and root lift on fine and flat hair, this is a great every-other-day wash at a pleasing price. The complementary conditioner is worth a go too, with a unique bouncy feel that doesn't overload strands.
Its a bit easier to justify luxurious formulas when you're only washing once a week - and this is as luxurious and moisturising as shampoo gets. It's made with natural oils aplenty and has detangling properties that are particularly good for brittle, tuggy strands.
Is it unhealthy to wash your hair everyday?
It can be, yes. "It’s definitely not advised to wash your hair every day," says Celebrity hairdresser Jay Birmingham. "Washing your hair too much can disrupt your scalp's natural balance. This can lead to it feeling sensitive and inflamed. You can also cause your hair to feel dry and a little brittle on the ends if you overwash it."
If you have an incredibly oily scalp or can't bear the feeling of unwashed hair, even for one day, switch to a sulfate-free shampoo. Not because the answer to is sulfate bad for your hair is a resounding yes, but because sulfates are ultra-efficient at dissolving oil, which you really don't want to be doing every day.
If you are a dedicated once-a-day washer and really don't want to deviate, using higher-quality formulas with hydrating ingredients as well as cleansing ones can help mitigate drying effects. So for those wondering is expensive shampoo better for daily washing, in some cases, yes it can be.
How can I cut down on hair washing?
Washing less can be an adjustment if you're used to the feeling of fresh hair. "You need to train your hair. In the beginning, you will need to go with it and accept that your hair will be a little greasy," says Birmingham, who advises using dry shampoo before bed "Apply it to the roots and gently work it in with your fingertips. Then leave overnight and wake up in the morning to refreshed hair."
On wash days, Birmingham recommends double shampooing, "You can really clarify your scalp and remove any build up of styling products. It helps to go longer between washes if your scalp is super clean."
Finally, when styling unwashed hair, hair up styles and ponytail hairstyles will simultaneously disguise oil and stick around longer because of it. "Dry styling is another great way of refreshing your hair without washing. You can use a curling iron or wand on day-old hair to just refresh and fine-tune the style," says Walters. Many of the best hair straightener brushes are designed with refreshing day-two hair in mind, which should help you stick with your shiny-new, less frequent wash routine.
Many a beauty ed's favourite dry shampoo, this manages to not just soak up excess oil but make hair feel genuinely clean. It also smells amazing and lasts all day without going gunky.
Create a freshly-styled looking 'do in between wash days with this hot brush from ghd. It smooths frizz for a freshly-dried, sleek look and can be used to create little bends and root lift.
Does washing your hair less make it healthier?
If you tend towards over-washing then yes, washing less can be beneficial. "Over washing the wrong hair type can make life extremely difficult. Fine hair will become flat, static, fly away, and struggle to hold a blow-dry or style," explains Walters, "thicker dry hair will become unmanageable, dryer, frizzy and untameable."
However, there is also such a thing as washing too little, which isn't advisable for scalp care or for anyone trying to master how to get rid of dandruff. It's all about finding the sweet spot. "You need to get the balance right. You don’t want to wash your hair every day but you don’t want to avoid washing it either. Find what works for you," says Birmingham, who recommends two to three times a week as a sensible starting point.
