A 15-minute full body workout with weights including dumbbells is recommended to people working out at home.  Depending on your goals, it could be better to try to do compound movements for the muscles. To get the best results of this form of exercise it is important to make sure that the intensity level is at least moderate in order to exert  the muscles. You can also get the best out of short dumbbell sessions by using a calisthenics workout split where you work out at different muscle groups in intervals.
Full body workouts are ideal for a number of people. Whether it be those who are running against time and want a home-gym experience but without the equipment. Or even those who are interested in exercising at a gym and want to improve their overall fitness.  Such workouts are supposed to incorporate movements that work many muscles at once.
You don’t need any equipment other than some dumbbells which can be found at most gyms. That said, it could be  useful to have a set of adjustable dumbbells for home training so that you can change the number of pounds when shifting from one movement to another, as needed.