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Originally Posted by Enviro Girl  I had read of some of us having scalp issues before I joined, so I just wanted to warn about what I learned on my ND's website, trying to help a friend w/Vertigo.
Their fix for Vertigo targets something called 'salicylates', these weird salt-crystal-like things. Some dandruff shampoos contain salicylates and these can come to rest in and do damage to our ear canals. They're in a variety of common products, there's a wikipedia on them if anyone wants to look 'em up... |
I'm on Wikipedia right now and no not see what you are talking about. Jason's dandruff shampoo has Salicylic acid in it and I've been using it for two months with no ill effect.
I copied out two sections from their site and see there can be a problem if a person is zinc deficient (that is if you are being injected with it). Otherwise, it sounds okay to me. If you find a link, let's see the research. Thanks.
Below is text taken from:
Salicylic acid - Wikipedia, the free encyclopedia
"As with other beta hydroxy acids, salicylic acid is a key ingredient in many skin-care products for the treatment of acne, psoriasis, calluses, corns, keratosis pilaris, and warts.[11] It works as both a keratolytic and comedolytic agent by causing the cells of the epidermis to shed more readily, opening clogged pores and neutralizing bacteria within, preventing pores from clogging up again by constricting pore diameter, and allowing room for new cell growth.[12] Because of its effect on skin cells, salicylic acid is used in several shampoos used to treat dandruff. Use of concentrated solutions of salicylic acid may cause hyperpigmentation on unpretreated skin for those with darker skin types (Fitzpatrick phototypes IV, V, VI), as well as with the lack of use of a broad spectrum sunblock.[13][14]"
Safety: Salicylic acid has an ototoxic effect by inhibiting prestin.[16] It can induce transient hearing loss in zinc-deficient individuals.
This finding is based on clinical studies with rats. An injection of salicylic acid induced hearing loss in zinc-deficient rats, while a simultaneous injection of zinc reversed the hearing loss. An injection of magnesium in the zinc-deficient rats did not reverse the salicylic acid-induced hearing loss.
Salicylic acid is used to treat acne, warts and other dermatological problems. There are no studies specifically looking at topical salicylic acid in pregnancy. Oral salicylic acid has not been associated with an increase in malformations if used during the first trimester, but use in late pregnancy has been associated with bleeding, especially intracranial bleeding.[17] The risks of aspirin late in pregnancy are probably not relevant for a topical exposure to salicylic acid, even late in the pregnancy, because of its low systemic levels. Topical salicylic acid is common in many over-the-counter dermatological agents, and the lack of adverse reports suggests a low teratogenic potential.[18]