The present invention relates to a system to highlight the hair. The system comprises a device (10) and a composition (50). Device (10) comprises a first portion movably joined to a second portion. Composition (50) comprises a percentage of hydrogen peroxide and a percentage of an alkalizer by weight of said composition (50). The weight percentages of hydrogen peroxide and of an alkalizer are defined by equation (I): X + 1.5Y ‰¥ 15 (I) wherein X is the percentage by weight of hydrogen peroxide by weight of the composition (50) and wherein Y is the percentage by weight of an alkalizer by weight of the composition (50). Said composition (50) comprises at least 2% of hydrogen peroxide by weight of said composition (50) and said alkalizer is an inorganic salt selected from the group consisting of sodium silicate, sodium metasilicate, potassium hydrogen carbonate, ammonium carbonate, ammonium hydrogen carbonate and sodium hydrogen carbonate and mixtures thereof. Said composition (50) allows to perform highlighting when applied with the device (10) as described herein.
