The Kerasilk KeraTransform Technology (KT3) fuses the power of three ingredients to help deliver beautiful hair transformations. All Kerasilk Repower products contain the segment-specific ingredients elastin, medium-molecular keratin and color-caring silk. Elastin attaches to the hair and helps support its elasticity and texture, so fine and limp hair is strengthened. Medium-molecular keratin anchors to the cuticula and helps strengthen the hair structure. Color-caring silk helps support the color protection.