Marie Claire UK Marie Claire UK
  • Fashion Fashion
      • Fashion
        • View all Fashion
        • Fashion Trends
        • Shopping
        • Watches and Jewellery
        • Fashion News
  • Beauty Beauty
      • Beauty
        • View all Beauty
        • Fragrance
        • Hair
        • Make Up
        • Skincare
        • Nails
        • Marie Claire Beauty Awards
  • Health Health
      • Health
        • View all Health
        • Fitness
        • Nutrition
        • Female Health
        • Wellbeing
  • Life Life
      • Life
        • View all Life
        • Opinions
        • Travel
        • Sustainability
        • Weddings
        • Money & Work
        • Competitions
  • Culture Culture
      • Culture
        • View all Culture
        • TV and Film
        • Celebrity News
        • Books
        • Royal News
  • Vouchers Vouchers
      • Clothing
        • View all Vouchers
        • Mint Velvet
        • Karen Millen
        • H&M
        • nobody's child
        • ASOS
        • ARKET
        • MANGO
      • Designer Clothing
        • View all Vouchers
        • Reiss
        • THE OUTNET
        • SSENSE
        • Mytheresa
        • Liberty London
        • Selfridges
        • Farfetch
      • Accessories
        • View all Vouchers
        • AllSaints
        • Aspinal of London
        • Charles & Keith
        • River Island
        • FitFlop
        • Kate Spade
        • Vagabond
      • Jewellery
        • View all Vouchers
        • Pandora
        • Abbott Lyon
        • Goldsmiths
        • Beaverbrooks
        • Astrid & Miyu
        • Swarovski
        • Angara Jewellery
      • Beauty
        • View all Vouchers
        • Sephora
        • Cult Beauty
        • Space NK
        • Dyson
        • Clarins
        • Look Fantastic
        • Clinique
      • Activewear
        • View all Vouchers
        • Lululemon
        • Gymshark
        • Sweaty Betty
        • Nike
        • adidas
        • New Balance
        • Helly Hansen
  • NEWSLETTER Signup to our newsletter
  • logoCreated with Sketch.
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!


    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    You are now subscribed

    Your newsletter sign-up was successful


    An account already exists for this email address, please log in.
    Trending
    • Women in Sport 2026
    • Marie Claire Masters
    • Spring Summer 2026
    • Nail Trends 2026
    • Best Investment Bags
    • Best Perfumes
    • Digital Issues
    • Women Who Win
    1. Beauty
    2. Hair

    Hair myths: which ones to believe and which ones to completely ignore

    Let's tell the truth about those old wives' tales...

    By Marie Claire
    Published 11 April 2019 In Features

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

    hair myths
    (Image credit: IMAXtree)
    • Facebook
    • X
    • Pinterest
    Share this article
    Join the conversation
    Follow us
    Add us as a preferred source on Google
    Subscribe to our newsletter

    Let's tell the truth about those old wives' tales...

    There are so many old wives’ tales about haircare that make the rounds, that it's tricky to know what to believe and what to call bullshit on. We grilled some of the industry's biggest players to help us decipher the biggest hair myths.

    Cutting your hair frequently makes it grow faster

    TRUE

    Who knew there was actually some truth in this tale? According to London hairdresser Andrew Jose, although the growth of the hair happens in the follicles of your scalp, frayed and split ends make hair look thinner and when they break off they shorten your hair. Although cutting your hair won’t determine how fast your hair grows, it can certainly help avert hair shaft breakage, keeping your tips looking healthy and preventing splits from working their way up strands.

    'If you wait so long that splits are causing your hair to break off high up on the strand, your hair will actually be shorter than if you get consistent trims,' he advises. Jose suggests using one of the best hair masks at least once a week to minimise hair splitting because 'hair that touches your shoulders or beyond can be several years old and most likely needs more TLC than a normal conditioner.' However, you can't fix a split end, says James Pryce, stylist at Larry King. 'No matter how much conditioner you apply it will never reseal itself. The trick is to prevent them from happening in the first place.'

    hair myths

    (Image credit: IMAXtree)

    If you pluck one grey hair, two will grow back in its place

    FALSE

    Phew! So, why do we think it? Well, one grey hair means that there are arguably more greys hidden underneath. Once you have noticed one, you'll probably start to notice more.

    You may like
    • selection of the best pre-shampoo treatments tested by Marie Claire UK If Your Hair Still Feels Lacklustre No Matter What You Try, a Pre-Shampoo Treatment Could Be What’s Missing
    • Does your ponytail give you a headache? If Your Ponytail Gives You a Headache—Your Hair Is Trying to Tell You Something
    • best hair repair masks tested by Marie Claire UK My Hair Is Dry and Lacklustre After Summer—Of All the Repair Masks I’ve Tried, These Are the Ones I Recommend

    Plucking the hair will indeed get rid of the grey, but only temporarily. The follicle is still alive and will produce another hair to replace the one that was pulled out. However, what you do to one follicle doesn't affect its neighbour, so it is impossible for two hairs to sprout. Some more good news: when the new hair grows back it may be a little less grey than its predecessor (if you're lucky). This is because melanogenesis (the process by which hair follicles make the pigment that gives hair its colour) is not totally consistent from hair to hair - so here's hoping.

    Shampooing makes your hair shed

    FALSE

    According to those in the know, the worst thing you can do for thinning hair is to wash your hair less, as it needs a clean, debris-free environment to grow.

    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!

    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    People often lose hair in the shower, so they associate shampooing with shedding - but if you cut back on washing in an effort to spare your hair, you can actually make the problem worse. The debris and oil build up can cause inflammation, which actually stunts hair growth.

    Oils are a no-go if your hair is greasy

    FALSE

    Ahhh this is so similar to the myth dermatologists try to dispel on a daily basis - if you have oily skin, you shouldn't use a face oil. Oils are absolutely fine to add to your ends and hair shaft - they'll add shine and lustre, and help repair split ends.

    Oils, unlike other products, do not sit on the hair's surface creating the illusion of healthy hair. Some of the best hair oils have the ability to penetrate the hair's cuticle and actually make it healthier.

    What to read next
    • Heatwave hair loss and seasonal hair shedding Heatwave Hair Shedding Is Real—Here’s How a Dermatologist Recommends Protecting Your Hair and Scalp
    • The long hair trend and the post-bob era I’ve Spent Two Years Growing My Bob—Turns Out, There's a Reason Long Hair Is Trending
    • How to make your blow dry last I've Been Styling Celebrity Hair for 30 Years—Here's How to Make Your Blow-Dry Last for Days

    hair myths

    (Image credit: IMAXtree)

    If you leave your hair for long enough, it will begin to clean itself

    FALSE

    Trichologist Anabel Kingsley says this is 'utter nonsense', arguing that a clean scalp and hair means a healthier scalp and hair.

    'You should wash and condition your hair regularly,' she says. 'When left for 3-4 days the scalp can become flaky, itchy and uncomfortable whilst the hair itself will become dull and lank.' However, other experts say that when you wash your hair too much, you strip it of its natural oils. We recommend trial and error and seeing what works for you, as everyone's hair is different.

    We’ve all used and abused dry shampoo and counted down the days till our next hair wash, but it turns out that it doesn’t actually make your hair any less oily. In fact, it’s got nothing to do with external factors like washing and instead comes down to how your own body works.

    ‘No matter how frequently you shampoo your hair, your scalp will continue to produce the same amount of oil. Your hormones and genetics determine how much oil your scalp produces therefore cutting back on shampooing your hair won’t make a difference,’ Burnett says.

    You should brush your hair with 100 strokes a day

    FALSE

    According to the American Academy of Dermatology, this is an old wives' tale that can actually end up causing split ends and huge damage to your hair.

    They advise: 'Brush and comb your hair only to style it. Hair never needs 100 brush strokes a day. Use a wide-tooth comb, and use it gently to comb your hair. Avoid pulling and tugging on your hair as you brush, comb, or style it.' They also advise using a moisturising conditioner to remove any stubborn tangles rather than tugging at the hair.

    Burnett adds, ‘Brushing your hair is imperative to ensuring that the natural oils in your hair are maintained from your scalp to your ends, so a small amount of brushing is fine, but over brushing can actually cause a lot more breakage and activates your oil glands making your hair greasier.'

    hair myths

    (Image credit: IMAXtree)

    You should always switch your shampoo

    FALSE

    Well, this is a good one to know because it was becoming expensive. 'Your hair does not get used to shampoo, you simply get used to its effects,' says Pryce. However, you should change up your hair products for things like seasonal shifts, as you get older and if you're colouring your hair more/differently.

    Washing with cold water makes hair shinier

    TRUE/FALSE

    While there’s some truth to this myth, you’ll have to resort to an Arctic cold shower if you want to really see a difference. (We’d rather not, to be honest). Burnett explains, ‘As your hair contains no living cells, it doesn’t actually react to cold or hot water. Although, icy water will make the hair light-reflective and not ruffled or dull looking.’

    Dandruff is a sign of a dry scalp

    TRUE

    This is true, but there are a lot of things that cause dandruff, not just a dry scalp. It’s kind of grim, but a whole list of skin conditions can cause flakiness so it’s best to keep an eye on things and go to your doctor if you’re a little worried.

    Videos you may like:

    Video you may like:

    ‘Although dandruff is one of the causes of a dry scalp, the two don’t necessarily correlate. Medical skin conditions such as dandruff, psoriasis and dermatitis are caused by the over production of oil (sebum) not dryness, this looks yellowish white in colour. Dry scalps are commonly caused by the environment elements or product build up,’ Burnett explains.

    You can’t dye your hair while pregnant

    FALSE

    Phew! Feel free to go as bright and as bold as you like, hair dye doesn’t actually affect your baby. Only a minuscule amount of it actually gets absorbed into your skin, so you can cover up those roots without breaking a sweat.

    Burnett adds, ‘This is a very common myth in hairdressing and is actually one of the biggest concerns for my clients. Permanent and semi-permanent hair dyes are completely safe and don’t have any toxins or chemicals that can harm a baby.’

    Marie Claire
    Social Links Navigation

    The leading destination for fashion, beauty, shopping and finger-on-the-pulse views on the latest issues. Marie Claire's travel content helps you delight in discovering new destinations around the globe, offering a unique – and sometimes unchartered – travel experience. From new hotel openings to the destinations tipped to take over our travel calendars, this iconic name has it covered.

    Read more
    selection of the best pre-shampoo treatments tested by Marie Claire UK
    Hair If Your Hair Still Feels Lacklustre No Matter What You Try, a Pre-Shampoo Treatment Could Be What’s Missing
    Does your ponytail give you a headache?
    Hair If Your Ponytail Gives You a Headache—Your Hair Is Trying to Tell You Something
     
     
    best hair repair masks tested by Marie Claire UK
    Hair My Hair Is Dry and Lacklustre After Summer—Of All the Repair Masks I’ve Tried, These Are the Ones I Recommend
    Heatwave hair loss and seasonal hair shedding
    Hair Heatwave Hair Shedding Is Real—Here’s How a Dermatologist Recommends Protecting Your Hair and Scalp
     
     
    Latest in Hair
    The long hair trend and the post-bob era
    Hair I’ve Spent Two Years Growing My Bob—Turns Out, There's a Reason Long Hair Is Trending
    Heatwave hair loss and seasonal hair shedding
    Hair Heatwave Hair Shedding Is Real—Here’s How a Dermatologist Recommends Protecting Your Hair and Scalp
     
     
    selection of the best pre-shampoo treatments tested by Marie Claire UK
    Hair If Your Hair Still Feels Lacklustre No Matter What You Try, a Pre-Shampoo Treatment Could Be What’s Missing
    best hair repair masks tested by Marie Claire UK
    Hair My Hair Is Dry and Lacklustre After Summer—Of All the Repair Masks I’ve Tried, These Are the Ones I Recommend
     
     
    Latest in Features
    Sensoria Dolomites
    Travel Part Ski Resort, Part Sanctuary, Sensoria Dolomites is Capturing the Wellness Zeitgeist
    Marie Claire UK Skin Awards Judges 2026
    Skincare Marie Claire UK Skin Awards 2026: Meet the Visionary Judges Defining the Best in Skincare
     
     
    Cara My Life in London
    Fashion Cara Delevingne on Designing Her First Collection for Topshop and London's Best-Kept Secrets
    Parched earth, a woman drinking water and London’s skyline illustrate drought and growing concerns around AI water use.
    Life I Investigated the Hidden Cost of AI. One Data Centre Can Use as Much Water as 10,000 People
     
     
    logoCreated with Sketch.
    • Site Archive
    • Contact Future's experts
    • Contact us
    • Terms and conditions
    • Advertise with us
    • Privacy policy
    • Cookies policy
    • About us
    Add as a preferred source on Google Add as a preferred source on Google

    Marie Claire UK is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

    © Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885.