Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine ... to PTDS who subsequently used a PTDS dye free of PPD tolerated these products.
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Hair dye can trigger allergic reactions. Don’t ignore the health risks for a colourful lookThe surge in hair dye allergies raises crucial questions about ... and red henna, being additive-free, has a lower risk of causing allergies. Also read: That colour on your hair is dangerous.
The vast majority of reactions to hair-dye products are caused by PPD. [4–6] In past years, PPD was used in permanent hair dyes but not in semipermanent dyes. More recently, PPD has been used in ...
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