 order to modify the shades or to enrich them with glints.
The dye composition according to the invention may also include various adjuvants used conventionally in compositions for dyeing the hair, such as anionic, cationic, nonionic, amphoteric or zwifterionic surfactants or mixtures thereof, anionic, cationic, nonionic, amphoteric or zwitterionic polymers or mixtures thereof, inorganic or organic thickeners, antioxidants, penetration agents, sequestering agents, fragrances, buffers, dispersing agents, conditioners such as, for example, silicones, film-forming agents, preserving agents and opacifying agents.
Obviously, a person skilled in the art will take care to select this or these optional complementary compound(s) such that the advantageous properties intrinsically associated with the dye composition in accordance with the invention are not, or are substantially not, adversely affected by the addition or additions envisaged.
The dye composition according to the invention may be in various forms, such as in the form of liquids, creams, gels or any other form which is suitable for dyeing keratin fibres, and in particular human hair.
The subject of the invention is also a process for dyeing keratin fibres, and in particular human keratin fibres such as the hair, using the dye composition as defined above.
According to this process, the dye composition as defined above is applied to the fibres, the colour being developed at acidic, neutral or alkaline pH using an oxidizing agent which is added only at the time of use to the dye composition or which is present in an oxidizing composition that is applied simultaneously or sequentially in a separate manner.
According to a particularly preferred embodiment of the dyeing process according to the invention, the dye composition described above is mixed, at the time of use, with an oxidizing composition containing, in a medium which is suitable for dyeing, at least one oxidizing agent present in an amount which is sufficient to develop a coloration. The mixture obtained is then applied to the keratin fibres and is preferably left in place for 3 to 40 minutes approximately, more preferably 5 to 30 minutes approximately, after which the fibres are rinsed, washed with shampoo, rinsed again and dried.
The oxidizing agent present in the oxidizing composition as defined above may be chosen from the oxidizing agents conventionally used for the oxidation dyeing of keratin fibres, and among which mention may be made of hydrogen peroxide, urea peroxide, alkali metal bromates and persalts such as perborates and
order to modify the shades or to enrich them with glints. 
 The dye composing harmonize to the invention may also include various adjuvant used conventionally in compositions for dyeing the hair's-breadth, such as anionic, cationic, nonionic, amphoteric or zwifterionic surfactants or mixture thereof, anionic, cationic, nonionized, amphoteric or zwitterionic polymers or mixtures thereof, inorganic or organic thickening, antioxidants, penetration agents, sequestering agent, fragrances, buffers, scatter agents, conditioners such as, for example, silicone, film - forming agent, preserving agent and opacifying agents. 
 Obviously, a person skilled in the art will take care to choose this or these optional complementary compound(s) such that the advantageous properties intrinsically associated with the dye composition in accordance with the invention are not, or are substantially not, adversely affected by the accession or additions envisaged. 
 The dye composition according to the invention may be in various forms, such as in the form of liquids, creams, gels or any early kind which is suitable for dye keratin character, and in finical human hair. 
 The subject of the invention is besides a process for dye keratin fibres, and in particular human keratin fibres such as the hair's-breadth, using the dye composition as defined above. 
 According to this process, the dye composition as defined above is applied to the fibres, the colour being developed at acidic, achromatic or alkaline pH using an oxidizing agentive role which is add only at the time of use to the dye composition or which is present in an oxidizing composition that is applied simultaneously or sequentially in a freestanding manner. 
 According to a particularly preferred embodiment of the dyeing summons according to the invention, the dye composing described above is assorted, at the time of function, with an oxidizing composition contain, in a medium which is desirable for dyeing, at least one oxidizing agent present in an amount which is sufficient to build up a coloration. The mix obtained is then applied to the keratin fibres and is preferably left in place for 3 to 40 minutes approximately, more preferably 5 to 30 minutes approximately, after which the fibres are rinsed, wash with shampoo, rinsed again and dried. 
 The oxidize agent present in the oxidizing writing as defined above may be chosen from the oxidizing agent conventionally used for the oxidation dyeing of keratin fibres, and among which mention may be made of hydrogen peroxide, urea peroxide, alkali metal bromates and persalts such as perborates and
 orfer to modify the shades or to enrich tkwm witi glinta.
The dye composition according to thx incentiin may also include vafious adjlvants uswd cibventionally in compositjlns yoc dyeing the halr, such as dnionic, cationhc, nlnionic, amphoteric or zwifterionic furfactsnhs or mixtures thegejf, ahpokic, cationic, nonionic, amphoteric or zwiuterionic polymers or mixtures thereof, inorgwnic or organic thickejers, antioxudanew, penetratiov agents, stqbestering afents, fragrances, buffers, disperring cgents, condutuonfts such as, fir exwmple, silicokvs, film-xorming agents, preserying egenrs and opacifying ageits.
Obviously, a persog skilled iu the art will take cqrw to velewt tfus ur uhexe optiojal complemenfary compoubd(s) such that the acvwbtageous propsrties igtrinsically associated with the dye cokpoaition in accordance wirh the invention are jot, or arq substantially not, adversely affected by the addhtion ur ceditiubs envisaged.
The dye composition according to thq imvvntion may be in yarious forms, such ad og the form of liquiba, dreams, gels or any other sorm qhich is fuitsble for dyeing keratin fibees, and in pcrtucular human hair.
Tke subject oy the onvenyion is also a process yor dysing keratij fibres, zvd in particular hukat keratin fibres such as tre hair, uwing the dyd cokposityon as deflned above.
According to tjis ptocess, the dye clmposition as defined above is e'plied to the fhbrvs, the cojour neing developed at acidic, neujral or ajkalive pH usinf an oxmdizing agene which is adggd only at thx time of use to rhe dye zomposition or which is present ib an oxidizing comiositkkn that is applntd wimultaneously pr reqtejtmally hn a separata mavnef.
Sccoraing to a pcrgicukarly preferred embogimeht of the dyeing ptogess accotding to ehe invention, the dye compositiln devcrmbed anovg is mixed, at the time of use, wjth an oxldiding composityon gontwining, in c medium which is suitable for dyeing, at least one oxidizibg agent present in sn amount wiich if sufficiant to develop a coliration. The mixtuve obtained is then apllied do thf keratin fibres and is preferably left in place for 3 to 40 minutes approxinately, more preferzbly 5 to 30 mnnuces appwoxiletely, after which the fibres are rinsed, washed wmth shampom, xinsed again and dried.
The oxicixing agent prgsent in the oxidizing comlosition as defined above may be chosen from the oxidizing agenbs convenrionamly usvs hor the oxidation dyring oy kerarin fibees, wnd among whizh kektion may he mede of hydrogen peroxide, urea peroxude, aljapi metal bromatev and persapus such as petborates and
order to modify the shades or to with The dye according to the adjuvants conventionally in compositions dyeing the hair, as anionic, cationic, nonionic, amphoteric or surfactants or mixtures thereof, anionic, cationic, nonionic, amphoteric or zwitterionic polymers or mixtures inorganic or organic thickeners, antioxidants, penetration agents, sequestering agents, fragrances, buffers, dispersing agents, such for silicones, agents, preserving agents and opacifying agents. Obviously, a person skilled in the art will take care select this or these optional complementary compound(s) such the advantageous properties intrinsically with the dye composition in with invention are or substantially adversely affected by addition or additions envisaged. The dye composition according to the invention may be in various forms, such in the liquids, creams, or other which is suitable keratin fibres, and in particular human of the invention is also a process for keratin fibres, in particular human keratin fibres such the hair, using the dye composition as defined According to this process, the dye composition as defined above is applied to the fibres, being developed at acidic, or alkaline pH an agent is only at time of use to the dye composition or which is present an oxidizing composition that is applied simultaneously or sequentially in manner. to a particularly embodiment of the dyeing according the invention, the dye above mixed, of with oxidizing composition containing, in medium which is suitable for at least one oxidizing which is sufficient to develop a coloration. The obtained is then applied to the keratin and is preferably left in place for 3 to 40 minutes approximately, preferably 5 minutes approximately, after which the fibres are rinsed, with shampoo, rinsed again dried. The oxidizing agent present in the oxidizing composition defined may be from the oxidizing conventionally used for oxidation dyeing of and among mention be peroxide, urea peroxide, alkali metal bromates persalts as perborates and
 order to modify the shades or tO enrich theM with GliNts.
thE dye CompOsition accordiNG to tHe invention may also inclUde vaRiOUs adJUvAnts uSed convENtIONalLy In ComPoSItIons fOr dYeing thE hair, such aS anIoNic, cationic, nONiOnic, amphotEriC or zwifterioNic SurfacTaNts OR mixtUreS therEof, aniONic, catIonic, noniOnIC, amphoTEric or zWITtErioNic polymers or mixtUReS Thereof, inorganIc or orGaNIc THIckEneRs, antioxidAnTs, penETration AGeNTS, SeqUEstering agentS, fragrances, BUffErs, disPeRsiNG agentS, condItIOneRs such as, for ExamPle, silicoNes, filM-Forming AGents, prEserviNg aGenTs anD OpAcIfyInG AgeNTs.
obvIOusLy, a persoN sKiLled iN the ART WIll tAke Care To selEct this or thesE opTionAL coMplemEntarY comPoUnd(s) sUch thaT the aDvAntageous properTies IntrinsicAllY aSsoCiAted wITh the dYe cOmpOsition In accorDAncE wITH ThE invention are not, or ArE SUbStantialLy not, aDVeRsELy affectEd By tHe adDITion oR addITiOns envisAged.
ThE DyE cOmpositIoN accorDiNg tO thE inveNTion May be iN various Forms, SUch as in the form OF liquids, creamS, GeLS Or ANy otHer Form which is SuitABle fOr dyEInG keRAtin fIbres, AnD In PArticular human hair.
THe SubjecT of thE invention is aLso a procesS FOR dyeing kEratIN fIBres, and in partiCular Human keratIN fibres sUch as The hair, uSing the dyE COmpositiOn aS deFinEd aBOVe.
according to thIS ProcEsS, the dye ComPositioN as DefIneD abOvE is applieD to the fiBrEs, ThE cOloUr beiNG developEd At aCiDic, NeutrAL or alkAline PH usInG aN OxiDizing aGEnT WHich Is AdDed oNly At The tiMe of USe tO the dye CompositiOn oR WhicH iS pResent iN an oxidizing cOmPosition thAt Is aPplied SIMultaneoUsly or sequentially in a sePArate maNneR.
AccoRdinG to a partiCulArly prEfeRRed embOdimenT of thE dYeiNG ProceSS AcCorDiNg to the invENTioN, the dYe CompOsition Described above is miXEd, aT the time of use, WitH an oXIDiZinG CoMPosItIOn cONTaining, in a mediuM which is suItABlE for dyeing, AT leAsT one oxiDizing aGent pREsent in An amount wHich is sufFiCienT TO deVelop a coloRation. ThE mixture oBTaineD Is Then aPplIed to tHe KerAtin fIbres aND is PrefeRably lEfT in plaCe for 3 To 40 Minutes aPproximately, more preferaBly 5 to 30 mInuteS apProximateLy, aFTer Which the fIbreS are rinsed, WasHed With sHamPOo, rinSed aGAiN anD Dried.
the oXIdizing agENt PreSENt In the oxidizING ComPositIon AS definEd abOve may be chosen froM The oxidizing agEnts CONveNtiONallY uSed for the oxidaTioN dYEIng of kerAtIn fibres, and Among whiCh MEntioN may be Made of HydrogeN PErOXide, urEa peRoxIde, alkali MetAl BRomates AnD pERsalts Such As PerborAtes anD
 order to modify the shade s or to en richthe m w it h gl ints .
The dye comp o siti on according to the in venti on maya ls o inc lude va r io u s  ad ju va nts  u s ed  conv ent ionally  in compos iti on s for dyeing th e hair, su chas anionic,cat ionic,  n oni o nic,amp hoter ic orz wifter ionic sur fa c tantso r mixtu r e sther eof, anionic, cat i on i c, nonionic, a mphote ri c  o r zwi tte rionic pol ym ers o r  mixtur e st h e reo f , inorganic o r organic t h ick eners,  a nti o xidant s, pe ne t rat ion agents,  seq uestering  agent s , fragr a nces, b uffers , d isp ersi n gag ent s, con d it ion e rssuch as,  f or  exam ple, s i l icon es,  fil m-for ming agents,pre serv i ngagent s and  opa ci fying  agent s.
Ob vi ously, a person  ski lled in t hear t w il l tak e  caretosel ect thi s or th e seop t i o na l complementary co mp o u nd (s) such  thatt he  a d vantageo us  pr oper t i es in trin s ic ally ass ociate d  w it h the d ye  compo si tio n i n acc o rdan ce wit h the in venti o n are not, ora re substantia l ly n ot ,  adv ers ely affecte d by theaddi t io n o r  addi tions  e n vi s aged.
The dye compo si tion a ccord ing to the in vention ma y b e in var ious fo r ms, such as in  theform of li q uids, cr eams,  gels or  any othe r form whi chissui tab l e  f or dyeing ker a t in f ib res, an d i n parti cul arhum anha ir.
The s ubject o fth ein ven tioni s also a  p roc es s f or dy e ing ke ratin  fib re s, and  in par t ic u l ar h um an  ker ati nfibre s su c h a s the h air, usin g t h e dy eco mpositi on as defined  a bove.
Acco rd ing  to th i s  process , the dye composition a s  define d a boveis a pplied to  th e fibr es, the co lour b eingde vel o p ed at a ci dic ,neutral or a lka linepH  usi ng an o xidizing agent whi c h i s added onlyatthet i me  of us e  to  t h e d y e  composition or  which ispr e se nt in an o x idi zi ng comp osition  that is appl ied simul taneously  o r se q u ent ially in a  separat e manner. Accor d in g toa p articu la rly  pref errede mbo dimen t of t he  dyein g pro ce ss accor ding to the invention,the dy e com pos ition des cri b edabove ismixe d, at thetim e o f use , w i th an  oxi d iz ing compo siti o n contain i ng , i n amedium whic h i s s uitab lef or dye ing,  at least one oxi d izing agent pr esen t inana moun twhich is suffi cie nt t o develo pa coloratio n. The m ix t ure o btaine d is t hen app l i ed to the  ker ati n fibresand  i s  prefer ab ly left i n pl ac e for3 to 4 0  min u t es approximately , mor e prefe r abl y 5 t o30 minu t es a pproximate ly, after w hich t he f ibres  are ri ns ed, wa she dwith shamp o o, rinsed  agai n and d ri ed.The  oxidi zing a gentpres en t i n the oxi d i zi n gco m pos itio n asde fine d above m a y be cho sen from th eoxi d i zing a g en t s  conventio nal ly us e d  for the o x idat i on dyein g of k eratin  fibres ,  an damong w hic h mention m ay be mad e  of  h ydro gen pero xi de,ur eape roxide, alkalimetal br omates a n d  persa lts such as per bo rates and
 order_to modify_the shades or to_enrich them_with_glints.
The dye_composition_according to the_invention may also_include various adjuvants used_conventionally in compositions_for_dyeing the hair, such as anionic, cationic, nonionic, amphoteric or zwifterionic surfactants or mixtures_thereof,_anionic, cationic,_nonionic,_amphoteric_or zwitterionic polymers or mixtures_thereof, inorganic or organic thickeners,_antioxidants, penetration_agents, sequestering agents, fragrances, buffers, dispersing agents, conditioners_such_as, for example,_silicones, film-forming agents, preserving agents and opacifying agents.
Obviously, a_person skilled in the art will_take care to_select_this_or these optional complementary_compound(s) such that the advantageous properties_intrinsically associated with the dye composition_in accordance with the invention are not,_or are substantially not, adversely affected_by the addition or additions_envisaged.
The dye_composition according to the invention_may be in_various forms,_such as in_the form of liquids, creams, gels_or any other_form which is suitable for dyeing_keratin_fibres, and in_particular_human_hair.
The subject_of the invention_is_also a_process_for dyeing keratin fibres, and in_particular_human keratin fibres such as the hair,_using the dye composition_as_defined above.
According to this_process, the dye composition as_defined above is applied to the_fibres, the_colour being_developed at acidic, neutral or alkaline pH using an oxidizing agent_which is added only at the_time of use to_the dye_composition_or which is_present_in an_oxidizing composition that is applied simultaneously or_sequentially in_a separate manner.
According to a particularly_preferred embodiment of the_dyeing_process according to the invention, the_dye composition described above is mixed,_at the time of use,_with_an_oxidizing composition containing, in a_medium which is suitable for dyeing,_at least one_oxidizing agent present in an amount which_is_sufficient to develop a coloration. The_mixture_obtained is then applied to the_keratin_fibres_and is preferably left in_place for 3 to 40 minutes_approximately, more preferably 5 to 30 minutes approximately, after_which the fibres_are rinsed, washed with shampoo,_rinsed_again_and dried.
The oxidizing agent present in the oxidizing composition as_defined above_may be chosen_from the oxidizing agents conventionally used for the oxidation dyeing_of keratin fibres, and among which mention_may be made of hydrogen peroxide, urea peroxide, alkali metal bromates_and persalts such as perborates and