Built on a stoichiometric formula — the precise molar ratio of primary and secondary pigments is calculated to trigger a complete, balanced colour reaction. No residual pigment left in the hair. Richer colour, greater stability, and a result a professional can rely on.
Engineered specifically for WIL'NA colour formulas. Stable oxidation, precise pigment development, predictable results — even on demanding bases.
Mixing ratios, developer selection, and application sequence — everything needed for a precise result every time.
WIL'NA colour products may cause an allergic reaction. A skin allergy (patch) test must be carried out at least 48 hours before every application — including for clients who have been coloured before, with WIL'NA or any other brand. Do not apply if the client has a known sensitivity to hair dye, or if the scalp is irritated, broken, or affected by a skin condition. Always consult the product Safety Data Sheet and packaging instructions before use.
The ratio changes depending on the technique. Use the correct proportion to ensure the stoichiometric reaction runs to completion.
Five precisely calibrated strengths — each matched to a specific lift level and technique.





The sequence depends on whether you are lifting or depositing. Applying in the wrong order affects the evenness of the result.