Sulphur 30X is a homeopathic remedy primarily used to alleviate skin rashes, eczema, and psoriasis, particularly when symptoms include itching worsened by heat or water. The product is widely available online from retailers including Amazon , True Botanica, and Willner Chemists, often in the form of Boiron pellets. Boiron Sulphur 30X for Skin Rash Worsened by Heat & Water