A lot-base management host computer performs management of wafers with a lot as a unit by managing a process condition for each lot, a correspondence between a carrier ID and a lot ID, and a correspondence between a slot ID and a wafer ID in each lot. The judging portion judges that the seat is unoccupied by the occupant when a state where a detection that the occupant is not seated on the seat by the detecting portion continues for a judgment time after the detecting portion detects that the seat is occupied by the occupant. The cosmetic composition provides an improved skin sensory feel and a superior matte finish, and is useful for skin treatment, makeup and personal hygiene products.