A chemical compound used in many permanent hair dyes has been named Allergen of the Year for 2025 by the American Contact Dermatitis Society (ACDS). Toluene-2,5-diamine sulfate (PTDS) is an ...
Ingredients like paraphenylenediamine (PPD), a common component in permanent dyes, can trigger contact dermatitis. If you frequently colour your hair and notice persistent itching or rashes ...
Citing Neal’s Yard Remedies’ hair treatment as “great for managing symptoms,” Maguire enjoys how the included rosemary, ...
Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para ...
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