To purchase nicotine salts in India, you can explore online retailers specializing in vaping products and e-liquids. Websites like VapeStop, VapeMantra, and VapeIndia offer a variety of nicotine salt e-liquids from popular brands. Additionally, you can check local vape shops in your area that may carry nicotine salt products. Be sure to verify the authenticity and quality of the products before making a purchase, and always follow safety guidelines for handling and using nicotine-containing e-liquids.