NPA is v potent stuff so be carefull with it! It can be effective worn alone, a tiny , i mean tiny, dab on each on the side of each collar of a shirt is a good trick. When in contact with clothes, pheromones are absorbed better than when on skin,( as they tend to mix with sweat after a few hours or so and a musky frangrance can be noticed. )
NPA has a v high content of androstenone which is known for its 'alpha male' like properties.