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How Often Should You Wash Your Hair?

By Ellie Child - 2 years ago | Updated
woman applying dry shampoo to greasy hair

Hair wash day is something that we think about in advance and, occasionally, schedule our social events around (guilty as charged). For me, hair wash day commences every two days – inconvenient yes, but that’s just the cruel reality of having an oil-prone scalp.

However, recent studies have shown that if you too are cursed with oily roots, there is a remedy. The price? Totally free. BUT – and this is a big but – you have to endure greasy hair for quite a while.

What is hair training?

Hair training is a process in which you refrain from washing your hair for as long as possible. If I were to start ‘training’ my hair, I’d begin by adding an extra day between washes (leaving it for three rather than two). As each week went by, I'd add on an additional day until my hair became used to not being washed so frequently.

How does it work?

It’s important to remember the following principle: the more you wash your hair, the greasier it becomes. Yep, possibly the most nonsensical statement you’ll read today but that’s just the way the cookie crumbles.

Basically, over-washing your hair can strip it of its natural oils, which then encourages the scalp to produce more and more oil – the very thing you’re trying to rid your strands of.

Experts haven’t given an exact number of days that you should leave off washing your hair but recommend as long as possible. The only exceptions to this are finer-haired folks and frequent gym-goers or someone who lives in very humid conditions.

It's also worth noting that the thicker your hair is, the less oil there. This means you don't have to shampoo as much. Remember, all hair types vary and have different thresholds, so you'll need to decide what you’re comfortable with.

So, what’s a gal (or guy) to do?

Put the shampoo and conditioner down, mentally prepare for a lack of good hair days and put some simple strategies in place to counteract the ‘I haven’t showered’ look. Luckily, we’re here to help you with the last part.

Beauty Instagrammer Milana shows us how to rid the appearance of greasy locks with two key products. It may take us a bit of practice to master this but it's DEFINITELY worth it.


Long-lasting hair styles begin as soon as you step foot in the shower. Make sure you use high-quality hair care products which nourish your precious locks. This will help cleanse your scalp and prep your hair for beautiful looks that will last throughout the week.

Top tip: If you have an oily scalp, only apply conditioner to your lengths, not your roots.

Virtue Recovery Shampoo

A great way to prepare your locks for a number of no-wash-days is by using this Virtue shampoo which uses Alpha Keratin 60ku to repair damaged hair, while also deeply cleansing the strands to remove dirt and grime. The nasty free formula also ensures your tresses feel fresher and cleaner for longer.


Next in the process is styling. Yes, we know this can be a drag, but if you take the time now to style your hair it will last that little bit longer. When using heat stylers, be sure to use heat protection as this will keep your locks safe from breakages and damage. If you need tips, just take a look at our guide to heat protectants.

BaByliss Big Hair Care Hot Air Styler

For those lazy-day moment, pick up this innovative styling tool. It dries the hair AND styles your locks for the perfect bouncy blow-out. The round brush head also detangles any knots, leaving a smooth, frizz-free finish.

ghd Air Hair Dryer

ghd Air Hair Dryer


This professional hairdryer allows you to create a salon worthy blow-dry in the comfort of your own home. Make sure your hair is damp and not soaking wet before giving it a blast with the dryer, as this can cause more damage.


Of course, the main tool you’re going to rely on throughout the hair-wash-free days is dry shampoo, and there is no shortage of brands to choose from. As someone that has recently started ‘training’ their hair, I’m here to recommend the best dry shampoos for staying fresh. So here they are - and find out how to use them with our dry shampoo guide!

Living Proof Perfect Hair Day PhD Dry Shampoo - 198ML

Living Proof Perfect Hair Day PhD Dry Shampoo


Make every day a good hair day as this dry shampoo is sure to leave your locks feeling refreshed, revived and smellin' fine. A time-released fragrance keeps strands delicately scented throughout the day, whilst a Triple-Action Cleaning Technology actually removes grease and impurities from hair for a fresh look.

OUAI Super Dry Shampoo

OUAI Super Dry Shampoo


When Khloe Kardashian religiously uses a brand, you know you're onto a good thing. For salon-quality results, put your trust in the OUAI Dry Shampoo.

OUAI Anti Frizz Hair Sheets

OUAI Anti Frizz Hair Sheets


Again, OUAI save the day. Ideal for hand luggage, these oil-absorbing sheets make the perfect travel companions for last minute touch-ups.

Amika Perk Up Dry Shampoo

Amika Perk Up Dry Shampoo


Keeping your hair looking (and feeling) fresh for days, this dry shampoo is a must for anyone struggling with greasy roots. Plus this formula is vegan and free from any parabens, sulphates and mineral oils.

Ready to brave a few hair-wash-free days? We hope so (and so does your scalp). In the meantime, give your strands an extra helping hand by discovering the best hair vitamins with our Ultimate Guide To Hair Vitamins for grease-free, healthy locks.

Ellie Child

Written by Ellie Child

With five years’ experience under her belt, Ellie has worked alongside a range of highly regarded makeup artists, giving her a real insight into what consumers should be spending their money on.

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