A lotion bar is a solid lotion. It resembles a bar of soap, but acts like a lotion. The bar will stay solid when kept at room temperature or lower. It can be used anywhere on the body. When applied to skin, body heat will slightly melt the bar.
Natural butters have tendency to turn in to grainy texture. This does NOT mean the butter has gone bad or turn rancid. When a butter is heated the fatty acids separate from one another. Then if it cools slowly, these fractions stay separate causing the butter to go grainy. This happens during shipping in warm weather or if the bar is left in a warm or sunny place. Gently melt the butter, and then rapid cooling or freezing may help to reduce/remove graininess.