the invention provides a hair building solids dispenser for storing and dispensing hair building solids comprising first electrostatic charge controller adapted for altering and / or maintaining an electrostatic charge on a surface of at least some of said solids contained within , and / or as dispensed from , said dispenser , wherein at least a substantial portion of the exterior surface of the dispenser comprises substantially electrically non - conductive material , the first electrostatic charge controller being an electrically conductive material for providing an electrical connection between the inside and outside of the dispenser .