What Precautions Should Be Taken While Exposing To Sunlight Post Skin Grafting?

Yes Dr BR Hudda A lady answered my question about if my mom could can in a tanning bed, over a year ago my mother was in a car wreak an had to have a skin graft, but when it being that whats the precautions that need to be took for nautrul sunning? Like if she was to go o the beach or lake area? She s 42