Bonacure R-TWO Restorative Essence prepares and strengthens hair before coloring or bleaching. Prevents hair breakage and improves hair strength to combat damage caused by technical processing. Vegan composition, free of silicones and artificial dyes. Instructions for useChemical service: Shake well. Distribute to dry hair on lengths and ends, or on areas with severe damage, brush and blow-dry hair. Do not rinse. Apply dye/bleach, leave in and rinse thoroughly. Apply R-TWO Rescuing Treatment or Renewal Sealer.Care Service: Shake well. Distribute through damp hair to lengths and ends, or areas with severe damage, and brush through. Do not rinse. Apply R-TWO Rescuing Treatment or Renewal Sealer.