How do I use the keratin-and-vitamin fixing balm for the best result?

The fixing balm is a separate sachet or tube included in the box. After you have rinsed the color until the water runs clear, squeeze excess water from your hair (do not shampoo yet). Distribute the balm evenly from mid-lengths to ends — these areas are oldest and most porous, so they benefit most from the keratin film. Leave it on for 3–5 minutes; the cationic surfactants in the balm neutralize residual alkalinity from the dye, helping the cuticle scales lie flat. Keratin, a fibrous protein naturally found in hair, adsorbs onto the surface and temporarily reinforces the cuticle structure, while the added vitamins (typically panthenol and vitamin E derivatives) add slip and reduce oxidative stress markers on the fiber. Rinse thoroughly with cool water. You can shampoo gently the next day if needed, but skipping shampoo for 24–48 hours lets the color molecules fully oxidize and stabilize, improving longevity.