As 3D Scan Store puts it, their base meshes are created "by blending 50 face scans together for both male and female to create truly average head shape and a perfect starting point for any sculpt". This statistical approach removes individual anomalies to provide a versatile, average human form that can be morphed into almost any character.
Regarding usage rights, the store offers three license types. For professional studios, the is required if you are selling the final product (like a game or film) that contains the asset. It is crucial to check the Terms & Conditions, as there is a zero-tolerance policy regarding the use of these scans for pornography or overtly sexually explicit content. 3d scan store ultimate textured male and female base mesh