When it comes to how often we should shampoo our hair, it seems there is no definitive answer.
Dermatologists are in confliction with each other, stylists have their opinions which may go against the dermatologists. Do we want hair that’s best for styling and looks amazing? Or do we want hair that’s healthy? A tough question in these modern times of vanity and trendsetting, and one that people may have to think twice about.
It seems that the one thing that everyone is in agreement with is that shampooing your hair everyday is more than likely not necessary and can be damaging. Washing the hair everyday to avoid oily and dirty hair, can have the opposite effect as the cells in the scalp will produce more oil to compensate for the fact that it’s being constantly washed off, so hair will become more greasy more quickly.
When thinking about shampooing, you have to look at your hair and determine what type of hair you have. Is it long? Thick? Curly? Short? All these things can have an effect on how often we should shampoo our hair. In most cases thick, long, curly hair does not need to be shampooed as often as thin, straight and short hair because the oil does not travel as quickly from the scalp to the hair, meaning it take longer to look greasy and dull.
For thin, straight and short hair, it is recommended that washing every other day or 3 or 4 times a week is more than adequate and should mean your hair is both healthy, easy to style and looking fresh and clean, and washing too often can make it greasy. If washing everyday is still necessary and you cannot get out of the habit, use lighter, milder shampoos that do not leave residue behind usually branded as "everyday shampoos".
People with thick, curly and long hair can go longer in between washes; 2 times a week and maybe less should be fine for these hair types and washing too often can cause the hair to go dry. People with really thick really curly hair, can go anything up to a month between shampoos. For these hair types it seems that conditioning may be more essential for styling than shampooing as you do not want to wash the natural oils off the hair but do not want it to get unmanageable or smelly.
None of these times are concrete and everybody is different. It is possible to train the oil creating cells in your scalp to produce levels of oil that are suitable for the amount of washing you do. If you wish to reduce the frequency of your shampooing, leave a bit longer between washes the cells should be able to adjust to this change and produce oils slower as the need for it will be lower.
Test out different lengths of times between washing and try using conditioners and styling products like powders and dry shampoos to reduce the need to shampoo. But remember, shampooing everyday with heavy duty shampoos can damage the hair and scalp making it too greasy or too dry so try to avoid this.