【Consumer Council】The Wrong Shampoo can cause Inflammation? What is Transdermal Toxicity? Itchy Skin and Rash
Many people pay attention to hygiene when washing their hair with shampoo every day. 60 shampoos were tested and 12 shampoos with allergenic preservatives MIT and/or CMIT and one contained free formaldehyde, all of which may cause dermatitis according to the Consumer Council.