Yes, if the product is designed for both uses and is suitable for both your face and body. Two cleansers are not a requirement.
1. Check the intended areas
Read the usage instructions before extending the use of a product. A body product is not automatically intended for the eyes, mucous membranes, or all areas of the face.
2. Consider makeup
The face may have makeup or water-resistant sunscreen on it. Removing them requires following the instructions for the products in question. Using a soap does not systematically replace makeup removal.
3. Observe uses separately
A product may be pleasant on the body and uncomfortable on the cheeks. In that case, only keep the use that is well tolerated. You do not have to finish the bar on your face just to get your money's worth.
4. Avoid multiplying for the sake of it
If a single cleanser is suitable for both areas, it may be enough. Buy a second product for a specific need, not just because two categories exist in a store.
5. Organize the bathroom
Keep the product intended for each use in a clear location. If you share a bar, ensure it is put away after use. The practical guide details how to dry it.
Key takeaway. One or two products: decide based on the intended uses and your experience. The selection of references is still in Find your soap.