Pricing
The main difference between these two is the area covered by them. A hair wig covers the entire scalp. When the wig is applied on the scalp, the hair on the scalp is completely removed and thereafter wig is applied.
The Hair patch just covers only a small bald area of the scalp. While applying hair patch on the required area, the natural hair on the scalp is not removed but possibly some cutting is done according to the need.