Do jain muni acharya sadhu take bath?
Yes. Jain munis (sadhus, acharyas) observe daily cleanliness and typically bathe as part of their discipline. They keep the practice very simple and austere, avoiding perfumes or cosmetics and using only necessary water.
There are differences between Digambar and Shwetambar monastic codes, so the exact details (how often, what materials, and how they perform the bath) can vary slightly between traditions. But in both streams, maintaining purity of the body is considered an important part of their vows.
If you’d like, I can share more specific points from each tradition.