One n' Only Powder Lightener is a fast acting, dust-free lightener that is used for off-scalp lightening of hair. This lightener allows you to control the speed, power and the gentleness of lift! Total lift control is achieved with 10, 20,30 or 40 Volume One 'n Only Argan Oil Cream Developer. Formula mixes up into a smooth, creamy consistency that allows for easy application. It does not puff or swell during processing and leaves hair in superior condition with unsurpassed shine! Powerful enough for fast, off-scalp highlighting. Achieve any level of lift without unecessary damage to the hair. This lightener works equally well with foils or caps.