Permanent hair dyes are a popular choice for achieving bright, long-lasting hair colour. Many of these products contain a chemical called p-phenylenediamine, commonly known as PPD. This ingredient is essential for keeping hair shades vibrant and resistant to fading. However, experts warn that PPD may pose serious health risks. Regular exposure can lead to skin reactions such as redness, itching, swelling, and blistering. Some individuals may experience allergic responses, particularly those with pre-existing skin conditions. In rare cases, PPD can even cause life-threatening poisoning if ingested. Awareness of these risks is crucial for anyone who colours their hair frequently, allowing safer choices and preventive measures like patch testing. P-phenylenediamine is an aromatic amine

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