Yes, you can use bum bum cream on your legs.
Bum bum cream, like Sol de Janeiro's Brazilian Bum Bum Cream, is designed to be used all over the body. While marketed for the "bum bum" (Brazilian Portuguese for buttocks), Sol de Janeiro specifically recommends using it on areas like your arms, legs, and belly. The cream's ingredients are meant to provide a contouring effect, firming, and hydration to these areas. The subtle shimmer also enhances the skin's appearance.
In short, feel free to apply bum bum cream to your legs for moisturized and radiant-looking skin!