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a cleaning agent, usually liquid, for hair; usually consists of a detergent and perfume. Some, usually referred to as medicated shampoos, contain therapeutic substances such as parasiticides, antimicrobials, ketatolytic agents, and antiseborrheic compounds such as selenium sulfide.

Patient discussion about shampoo

Q. Does using hair shampoo and conditioner too often or in too excess cass hair loss?

A. Chemicals used for dying, tinting, bleaching, straightening or permanent waves can cause hair to become damaged and break off if they are overused or used incorrectly. Overstyling and excessive brushing also can cause hair to fall out if the hair shaft becomes damaged.
so it really depends on which shampoo you are using and what are the materials inside it. i heard from more then one hair dresser that conditioner can cause it and shampoo for dry hair that also contains conditioner. but it could be just an urban legend...

More discussions about shampoo
References in periodicals archive ?
Twelve dogs of similar breeds and weights were dipped with a nonprescription commercial flea dip, according to the manufacturer's guidelines, for four consecutive treatments at three-week intervals, with no shampooing in between.
Of 49 patients randomized to a 4-week regimen of shampooing with either the ketoconazole plus zinc pyrithione shampoo or the ketoconazole shampoo, those using the combination shampoo, had a more rapid and substantial decrease in dandruff scores, said Dr.
But daily shampooing can over-stimulate the oil glands, so avoid harsh products and choose a pH-balanced shampoo that won't send signals to the scalp to produce extra oil.
Anti-dandruff shampoos are big sellers, and frequent shampooing with one of these (or even an ordinary shampoo) is generally effective at getting rid of dandruff.