How often should you wash your hair?

How often should you wash your hair? It’s a question we get asked a lot at the salon, and the answer depends on a few different things…

If you wash your hair too much, you can remove the sebum your scalp produces - this is vital to healthy, shiny hair. And don’t be scared of oily hair, because despite what shampoo brands want you to believe, washing your hair a lot can turn your good hair day into a bad day.

Most people don’t need to wash their hair every day or even every other one, and how often you do it depends on quite a few factors. The simplest answer is that you should wash it once it’s oily and feels unclean to the touch.

But what other factors influence how often you need to wash your hair?

OIL

Oil is probably the biggest culprit behind what most people consider dirty hair, and it can leave hair limp and clumpy. How much oil you produce will depend on your age, genetics, sex, and environment. Kids and older adults don’t produce as much sebum as teenagers or 20-30 year olds.

TYPE OF HAIR

Straight and thin hair will need to be washed more often than thick or curly hair. This is because straight hair is easily coated by sebum, so it’ll look greasy faster. Thick, wavy or curly hair tends to be dry because the oil doesn’t coat the strands as easily. Sebum is actually a crucial part of well-defined curls, because curly hair needs more moisture to stay soft and prevent frizzing.

SWEAT

As you might expect, a sweaty workout does your hair no favours. How much you sweat is a big factor in how often you ought to wash, or at least rinse, your hair. Sweat can spread sebum and make your hair look and feel dirty. It can also cause your hair to smell.

What is the best way to prevent heat damage?

Q: What is the best way to prevent heat damage?

A: Heat-protecting sprays are the best way to protect hair from damage

Reducing the heat on your styling tools (hairdryer, curler, straighteners) will make a difference. Try to only use heated tools once a week to reduce further hair damage.

Here are some of our favourite heat defence sprays to protect hair:

Three easy tricks for a good hair day - by celebrity hairstylists

Celebrity stylists know all the tricks in the book to get their famous clients looking fabulous for the red carpet, as well as unusual hacks to keep hair healthy.

Actress Jessica Alba

Put a hair mask on before a workout

Sweat can dry out your hair so putting a hydrating mask on before a training session can allow the product to get deeper into follicles thanks to the rise in your body temperature, says Jen Atkin, whose clients include Kim Kardashian and Jessica Alba. Just wash it out when you shower post-workout!

Kim Kardashian

Fake volume with a double ponytail

"Fake thicker hair by stacking two ponytails close together, on top of each other in the back of your head,” says Jet Rhys, owner of Jet Rhys Salon in San Diego and stylist to Julia Roberts.

Actress Julia Roberts

Create shaggy beach waves while you sleep

Spritz your hair with a sea salt spray then twist hair into four flat Princess Leia style buns before bedtime. “The style is super comfortable to sleep on and you can wake up and shake loose effortless beachy waves!" says Michael Angelo, founder and creative director of Wonderland Beauty Parlor, who counts actress Susan Sarandon as a former client.

Actress Susan Sarandon