Schwarzkopf BlondMe Premium Developer Oil Formula is a luxuriously caring professional developer specially formulated to work in harmony with BlondMe Toning and BlondMe Lightener. With a high concentration of nourishing mineral oil, BlondMe Developer supports the natural moisture balance of your clients' hair. This rich formula also ensures a reduced water level in the developer which prevents the dilution of color, alkalizers and peroxides. Its caring formula supports hair's natural moisture balance which ensures your new blondes have brilliant shine and a wonderfully soft feel to their hair.