There are several ways to accomplish this and you can use your own imagination. Sometimes I spray both frags in the same location like my neck and inside of elbows, other times I spray each frag in separate locations. If I want to extend the longevity of frag(s) I will spread some "unscented" lotion in the palm of my hand, spray the frag(s) over the lotion in my palm and then spread that mixture over neck and/or arms. There are no laws against using more than one frag or where and how you choose to apply them.