Yes, this 125 g soap is designed for washing both hands and body, so you can keep one bar at the sink and use the same product in the shower or bath. For hands, wet them, rub the bar between your palms or directly over the skin to build a lather, wash for about 20 seconds, then rinse thoroughly. For a quick shower, the same approach works: work the lather over the body and rinse. Because the formula contains glycerin, the wash feels creamier and less harsh than many plain bars, which can be helpful if you wash your hands often during the day.
One thing to keep in mind is that a bar of soap is not a moisturizer. Glycerin helps retain some moisture on the skin, but if you have naturally dry skin, you may still want to follow up with a hand or body cream, especially after a hot shower. Store the bar so it can drain between uses — a soap dish with holes or a slotted tray lets it dry out and last longer. Avoid leaving it in standing water, which softens the bar quickly. In the shower you do not need a washcloth or sponge, as the bar lathers easily on wet skin. If you prefer light scrubbing, a washcloth can be used, but the soap itself is enough for everyday cleansing.