Character mesh low poly in object mode and high poly in sculpt

I used InstantMeshes to clean the high poly character 3D scan object, which had to much vertices to be practical. Now I want to adjust the muscle structure with sculpt mode, and I noticed that the

rendering - heightmap from textures and hight poly mesh to apply

mesh - Modeling stylised fur - Blender Stack Exchange

mesh - Modeling stylised fur - Blender Stack Exchange

Mesh Replacement - Blender Stack Exchange

Character mesh low poly in object mode and high poly in sculpt

mesh - Modeling stylised fur - Blender Stack Exchange

modeling - How do I smooth a low-poly mesh without shrinking its

mesh - How do I only select vertices which are visible from my

mesh - Modeling stylised fur - Blender Stack Exchange

Produce a white sculpture of a very low poly human h

3D model Leg Gurl Zbrush Sculpt 3D model VR / AR / low-poly

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Nike Air Force 1 Sculpt Unlocked By You Custom Shoes.

3D model Jennifer Lawrence head sculpt VR / AR / low-poly