When it comes to our hair, there's so much conflicting advice out there about the best ways to take care of it to ensure it's happy, healthy, and growing nice and long.
We're frequently told not to use too much heat on our hair in the form of hair dryers, straighteners and curlers and also warned that having a hair washing routine, or washing too frequently can also be damaging, stripping natural oils from the hair.
However, an expert has claimed this is a major hair myth that she wants to 'bust' here and now.
Susie Hammond, a trichologist at the Philip Kingsley Clinic in London, has shared why she believes we should be washing our hair every single day or every other day at the very least.
And it turns out there's actually quite a grim reason for this.
Speaking to The Mirror, the hair and scalp expert broke down just how much dirt and grime is actually on our scalps.
She said: "There are lots of common mistakes we can make with our hair and scalp care that can have a huge impact on how our hair health performs and one of the most common myths is that we don't need to shampoo frequently and I'd like to bust that right now, washing your hair every day or every other day is what we advocate at Philip Kingsley.
"It's not true that washing your hair too often will dry it out, your hair is taking hydration from the water and from the atmosphere around it."
"Don't forget that your scalp is skin, like anywhere else on the body and we're shedding skin cells all the time, and the only way of removing those as well as environmental dirt and sweat is to have a really good shampoo.
"All of that dirt is collecting on the scalp and as it's a lipid-rich humid environment up there we have yeasts that live naturally and healthily on our scalps. These can overgrow and trigger dandruff, so we want to keep that scalp environment clear and the only way to do this is to have a thorough shampoo."
And if all of that weren't enough, she continued to say how sebum, an oily substance produced by sebaceous glands, also collects on the scalp and can make your head 'smelly'.
"Sebum collecting on the scalp can make the hair look lank and limp and it can also make your scalp a bit smelly as well," Hammond claimed.
In order to avoid this you'll want to ensure you're giving your hair and scalp a proper wash and the expert has explained the best way to do this.
"When you're shampooing, don't just rub your hands roughly over the top of your head and hair, really get your fingers in under the hair and massage, lathering up the shampoo to help loosen up any of those skin cells and get a nice thorough cleanse," she explained.
"Be sure to apply conditioner every time you wash your hair as well. It's not a question of 'my hair is too fine and conditioner is too heavy for my hair', we can always find a conditioner that's suitable for your hair type as it's really important to use it every time as it helps close the cuticle on the outside of the hair shaft and protect the inner cortex of the hair and helps it to hold hydration.
"Keep a wide-tooth comb in the shower and comb your conditioner through to get any tangles out more kindly and you'll get a more even distribution of conditioner this way as well. Then rinse it off and job is done."
However, she also warned people to be careful when towel drying their hair after a wash, saying that rubbing it with a towel is an error.
"You should be blotting and squeezing with the towel and try and avoid rubbing as this is much kinder to the hair," Hammond added.
Do you have a hair care tip or trick to share? We want to hear all about it. Email courtney.pochin@mirror.co.uk