Gorgeous blue by Raina Leon! STEP ONE: #KenraColor 7SM and Blue Booster equal parts with ribbon of 1N, 1:2 9 volume melted down to mid-length into 7SM and Blue Booster to ends with 3:1 color ratio and 1:2 developer ratio, respectively. STEP TWO (for 18 inch extensions): Color melt of Step One formula from weft to mid length of extensions then melted down to ends with 10SM and Blue Booster (2 inch Blue Booster)