摘要:
The present invention relates to a method for the preparation of a melanic pigment by enzymatic bioconversion, implementing a melanin precursor substrate and plant cells, characterized in that: (a) poppy (Papaver somniferum) plant cells previously cultivated are separated from their culture medium and subcultured in a culture medium with a concentration from 10 to 100 g/l; (b) the cells are ground at least partially, before or at the end of the latency time, (c) the at least partially ground cells are placed in a bioconversion medium in the presence with a melanin precursor substrate selected amoung indol, indolin, dihydroxyphenylalanin, tyramin and tyrosin; (d) the precipitated melanic pigment is collected. The invention also relates to the utilization of such resulting pigments for the preparation of cosmetic compositions.
摘要:
Transfer-resistant cosmetic/dermatological compositions (e.g., lipcolors) formulated as supple and homogeneous doughs, advantageously via extrusion, include a fatty phase which comprises at least one volatile oil, at least one phenylated silicone oil and at least 12% by weight of at least one wax.
摘要:
A depigmenting cosmetic or dermatologic composition for use in bleaching the skin or treating pigmental spots contains in a vehicle suitable for topical application to the skin a benzofuran derivative having the formula ##STR1## wherein the OH function occupies position 5 or 6, R.sub.1 and R.sub.2, each independently, represent hydrogen or alkyl having 1-4 carbon atoms, n is 0 or 1, when n is 0, the C.sub.2 -C.sub.3 bond is a double bond, and when n is 1, the C.sub.2 -C.sub.3 bond is a single bond.
摘要:
A product in the form of colored inorganic particles including one or a number of melanin pigments, a process for its preparation and to its use, especially in the field of cosmetics, for make-up for the exoskeleton and/or for the skin, and in protecting human skin against UV radiation.
摘要:
Alkylamino-mercaptoalkylamides have the formula ##STR1## where in A represents the divalent radical --(CH.sub.2).sub.n --, wherein n is a whole number ranging from 2 to 5, or the divalent radical --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 --,m is 0, 1 or 2,R.sub.1 represents hydrogen or linear or branched lower alkyl having 1-5 carbon atoms,R.sub.2 and R.sub.3, each independently, represent hydrogen or a linear or branched lower alkyl having 1-4 carbon atoms with the proviso that R.sub.2 and R.sub.3 are not hydrogen simultaneously and the salts of the compound of formula I as well as the corresponding disulfides with the exclusion of the disulfide in which A.dbd.--(CH.sub.2).sub.2 --, m.dbd.0, R.sub.1 and R.sub.2 .dbd.H and R.sub.3 .dbd.--C.sub.2 H.sub.5. The compound of formula I is used as a reducing agent in a cosmetic composition for the permanent deformation of hair.
摘要:
2-Substituted para-aminophenols of general formula: ##STR1## where Y denotes oxygen or sulphur and R denotes a C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl or C.sub.1 -C.sub.6 haloalkyl or a C.sub.2 -C.sub.6 polyhydroxyalkyl, provided that when Y=O, R is not methyl or ethyl and when Y=S, R is not ethyl; anddye composition containing one or more compounds of formula (I) where Y denotes an oxygen or sulphur atom and R is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.2 -C.sub.6 polyhydroxyalkyl.
摘要:
5-Substituted ortho-aminophenols of formula: ##STR1## in which: R.sub.1 denotes a hydrogen atom, an alkyl radical having 1 to 4 carbon atoms or a hydroxyalkyl radical having 1 to 4 carbon atoms; andR.sub.2 denotes, independently of R.sub.1, an alkyl radical having 1 to 4 carbon atoms, an alkoxy radical having 1 to 4 carbon atoms or a benzyl radical;the addition salts with an acid and the phenates, anddyeing composition containing a compound of formula (I) or a salt or a phenate of such a compound.The 5-substituted ortho-aminophenols enable hair to be dyed in a rich spectrum of hues having good durability.
摘要:
A cosmetic composition for the first stage of a permanent deformation of the hair contains, in a cosmetically acceptable vehicle, as a reducing agent, an amino mercaptoalkylamide having the formula ##STR1## wherein A represents the divalent radical, --(CH.sub.2).sub.n -- wherein n is a whole number ranging from 2 to 5, or the divalent radical --(CH.sub.2)--O--(CH.sub.2).sub.2 --, m is 0 or a whole number ranging from 1 to 4, and (i) when m is 0, R.sub.2 represents hydrogen methyl, ethyl, isopropyl, isobutyl, 2-methyl butyl, benzyl, 4-amino butyl, 3-guanidino propyl, 2-methylthio ethyl, carboxymethyl or 2-carboxyethyl, and (ii) when m is a whole number from 1 to 4, R.sub.1 represents hydrogen or lower alkyl having 1-5 carbon atoms, and the salts of the compound of formula I.
摘要:
2-Substituted para-aminophenols of general formula: ##STR1## where Y denotes oxygen or sulphur and R denotes a C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl or C.sub.1 -C.sub.6 haloalkyl or a C.sub.2 -C.sub.6 polyhydroxyalkyl, provided that when Y=O, R is not methyl or ethyl and when Y=S, R is not ethyl; and dye composition containing one or more compounds of formula (I) where Y denotes an oxygen or sulphur atom and R is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.2 -C.sub.6 polyhydroxyalkyl.
摘要:
Trialkoxy-substituted meta-phenylenediamines, a process for their preparation, and their use as couplers for oxidation dying of keratinous fibres and in particulate of human hair.1,3,5-trialkoxy-meta-phenylenediamine of formula: ##STR1## in which: R.sub.1 and R.sub.2 denote, independently of each other, a hydrogen atom, an alkyl radical containing 1 to 4 carbon atoms or a mono- or polyhydroxyalkyl radical containing 2 or 3 carbon atoms,Z denotes an alkyl radical containing from 1 to 4 carbon atoms, provided that, when R.sub.1 and R.sub.2 simultaneously denote a hydrogen atom, Z does not denote the methyl radical, and the addition salts of this compound with an acid.Process for the preparation of these compounds and their use as coupler in oxidation dying compositions for hair.