Hair colour allergy, Facts and suggestions. Dr Sandesh Gupta Dermatologist Delhi.

Hair color allergies can cause irritation or reactions on the scalp due to sensitivity to certain chemicals in the hair dye. The most common allergen in hair dyes is **paraphenylenediamine (PPD)**, but other ingredients like ammonia, peroxide, or resorcinol can also cause issues. Here's a guide to managing and addressing hair color allergies: --- *Symptoms of Hair Dye Allergy* Itching, redness, or swelling of the scalp, face, or neck. Burning or stinging sensations. Rash or hives. Severe cases may involve blisters, oozing, or even breathing difficulties (rare). --- *Steps to Address a Hair Dye Allergy* 1. *Stop Using the Product Immediately* Rinse the dye off your scalp and hair thoroughly with lukewarm water and a mild shampoo. 2. *Apply a Soothing Agent* Use a mild, fragrance-free moisturizer or aloe vera gel to calm the skin. 3. *Use an Antihistamine or Steroid Cream* Over-the-counter hydrocortisone cream can reduce inflammation. Oral antihistamines like loratadine or diphenhydramine may help with itching and swelling. 4. *Seek Medical Attention* If symptoms worsen or you experience severe swelling, blisters, or difficulty breathing, consult a dermatologist or allergist immediately. 5. *Patch Test Before Dyeing Again* Always test the dye on a small patch of skin (like behind your ear) 48 hours before applying it to your hair. --- *Alternative Options* **PPD-Free Hair Dyes**: Look for brands labeled as hypoallergenic or free of harsh chemicals. **Natural Options**: Henna or plant-based dyes can be gentler alternatives but still require a patch test. **Professional Coloring Services**: A dermatologist or allergist can guide you toward safer options or refer you to a professional salon experienced in handling sensitive scalps. --- *When to Consult a Dermatologist* If the allergic reaction persists after 2–3 days of treatment. If you develop signs of infection (pus, fever). To confirm the exact allergen through patch testing. Let me know if you need more personalized advice!