I've been dealing with sinus issues for the past 2 years, and to help with my headaches, I started applying Zandu balm on my forehead. After using it for about a year, I noticed that part of my forehead has turned completely black. Is there anything I can do to avoid this or fix it?

The use of Zandu balm on your forehead for an extended period has led to a condition called "contact leukoderma" or "chemical leukoderma."What is Contact Leukoderma?Contact leukoderma is a condition where the skin loses its pigmentation due to exposure to certain chemicals or substances. In your case, the prolonged use of Zandu balm has caused the skin on your forehead to lose its pigmentation, resulting in the black discoloration.How to Avoid Further Discoloration?1. Stop using Zandu balm: Immediately discontinue the use of Zandu balm on the affected area to prevent further discoloration.2. Consult a dermatologist: Schedule an appointment with a dermatologist to assess the affected area and provide guidance on treatment options.3. Use sun protection: Avoid exposing the affected area to direct sunlight, as this can worsen the discoloration. Use a broad-spectrum sunscreen with at least SPF 30 when going outdoors.4. Avoid further irritation: Refrain from using harsh skin care products, exfoliating, or using hot water on the affected area, as this can cause further irritation and discoloration.