50ml Carbon Dye High Viscosity Gel Formula for Laser and IPL Permanent Hair Removal Machines Carbon dye is used to increase the pigment in hair which helps laser and IPL radiation convert to heat. This heat is what cauterizes and thermally desiccates the hair follicle unit which permanently disables the organ (thereby preventing future hair growth). The use of carbon dye increases laser and IPL hair removal results by over 300% in clinical testing. Please allow an additional 1-2 business days for delivery as all major shipping companies are experiencing slight delays. All items are brand new with a 1 year standard warranty. Additional years can be purchased by referring to the warranty extension registration card included with the paperwork in the package. Full technical support is available (in the use and setup) of Bio Avance equipment. All items are manufactured in (and shipped from) the USA.