Which Prophet invented Soap?

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Which Prophet invented Soap? Answer: Prophet Saleh (A.S)

While ancient civilizations used soap-like substances, Prophet Saleh (Saleh AS) is traditionally credited within Islamic tradition for inventing the formula for modern soap, creating a cleansing agent from vegetable oil and alkali for his people, aligning with Islam's emphasis on purity, though historical records show soap-making existed earlier.

Question context

This question is part of 📚 General Knowledge within the broader 🌐 Current Affairs & GK subject and appears in the OTS Open Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.