Abstract: A container for the treatment of a lock of hair has a base element with a central opening and adapted to be held against the scalp of a user with the lock of hair drawn through that opening. The lock of hair is received in a sheet of flexible material which receives a disk fitted into the base element and having an incision through which the lock passes. An upper portion of the sheet forms a funnel extending through an opening in a lid aligned with incision and the opening in the base element, the funnel receiving the substance.