You definitely should use a wig cap if you want your wig to fit properly. All professionals use wig caps to make sure no real hair can be seen or slip out from underneath the wig. Even long hair disappears easily without making the wig look odd. This Wig Cap Set Skin Coloured and Black contains a black and a skin coloured wig cap. Just put it over your own hair and your Men's Wig Flash Gordon Blond, the Jessica Rabbit Wig Red or any other Halloween or carnival wig will fit perfectly!