1. The dye composition in foam form, containing at least one oxidation dye precursor, at least one oxidizing agent, at least one alkaline agent and at least one nonionic surfactant of formula (I) wherein R represents a linear or branched C-Calkilny or alkenyl radical n - number of from 10 to 15.2. Composition according to claim. 1, where the nonionic surfactant of formula (I), such that R represents a linear or branched C-Calkilny or alkenyl radikal.3. A composition according to claim 2, characterized in that it contains as oxidation dye precursors, one or more oxidation bases chosen from para-phenylenediamines, bis (phenyl) alkylenediamines, para-aminophenols, ortho-aminophenols and heterocyclic bases and their addition salts. and optionally one or more couplers chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, kraskoobrazuschih compounds based on naphthalene, and heterocyclic couplers, and their addition soley.4. A composition according to any one of claims. 1-3, where the oxidant is a peroxide vodoroda.5. A composition according to any one of claims. 1-3, wherein the alkaline agent is chosen from mineral alkaline agents and organic alkali agentov.6. A composition according to any one of claims. 1-3, wherein the alkaline agent (s) is selected from ammonia and monoethanolamine and smesey.7. A composition according to any one of claims. 1-3, wherein the nonionic surfactant of formula (I) is selected from decyl alcohol containing 10 mol of ethylene oxide hendecyl alcohol containing 11 mol of ethylene oxide lauryl alcohol, containing1. Композиция красителя в форме пены, содержащая по меньшей мере один предшественник окислительного красителя, по меньшей мере один окислитель, по меньшей мере один щелочной агент и по меньшей мере одно неионное поверхностно-активное вещество формулы (I)где R представляет собой линейный или разветвленный С10-C18 алкильный или алкенильный радикал n - число от 10 до 15.2. Композиция по п. 1, где неионное поверхностно-акт
