We performed three-dimensional scanning of 122 people and created 3D models of their heads. Men and women of different ages and with different anthropometric data participated in the study. We also used a study performed by the US National Institute for Occupational Safety and Health
NIOSH Dataset RD-10130-2020-0, which was carried out to develop well-fitting gas masks.
On each 3D model, we have marked the areas that should be massaged with water jets from the shower head. This gave us a map of universal massage areas suitable for all types of faces.