Is there really a public health threat from commonly sold anti- dandruff shampoos?
Vinegar along with hydrogen peroxide (H2O2) is used in livestock industry to kill bacteria and viruses before refrigeration storage. A chemical mixture of peracetic acid is formed when acetic acid is mixed with hydrogen peroxide. It is being used in some Asian countries by aerosol sprays for control of pneumonia. Usually of a 5% acetic acid and a 3% hydrogen peroxide is commonly used. Many mainstream dandruff shampoos even if they are free from coal tar contain other potentially hazardous ingredients such as sodium laureth sulfate or polyethylene glycol (PEG) compounds, both of which are frequently contaminated with a clear-cut carcinogen, 1,4-dioxane. Some even contain cocamide DEA, another suspect carcinogen. When using a retail dandruff product it is recommended that this product will need to be used continually. Once dandruff shampoos or products are discontinued, the dandruff will return. Thorough cleansing of the scalp and the hair will keep dandruff flakes out of sight for up to
