DynRemesh is a quad-based remesher, assisting in retopology for your dyntopo sculpts & 3dscans containing too many tris(triangles).
It includes support for QuadriFlow. QuadriFlow is a scalable algorithm for generating quadrilateral surface meshes based on the Instant Field-Aligned Meshes.
When working with any sculpt in general, you need clean topology in order for you to work with your assets.