摘要:
UV-screening compositions, formulated into a cosmetically acceptable medium, contain at least one ester solvent derived from 4-carboxy-2-pyrrolidinone, of formula (I) below: in which: R1 is a linear or branched C1-C20 alkyl radical, R2 is a linear or branched C1-C20 alkyl radical that may contain a C5-C6 ring member, the phenyl radical, the benzyl radical or the phenethyl radical, and at least one triazine-type lipophilic UV-screening agent.
摘要:
A dental handpiece carries a drill and drives it in relative motion in a direction of penetration. The handpiece includes a body with a proximal end and a distal end, a removable head connected to the body's distal end, able to hold the drill, abutment means fixed on the dental handpiece by fixation means and able to limit the depth of penetration of the drill in the body of a patient. The abutment means, protruding from the dental handpiece, are fixed and locked on the dental handpiece by locking means which are actuated by the simple movement of joining the head to the body.
摘要:
Cosmetic compositions for topical use for protecting the skin and the hair, containing, in a cosmetically acceptable support, at least one compound of formula (1) or (2) in which X1 represents R3—(C═O)—, R3—SO2— or R3—O—(C═O)—, X2 represents —(C═O)—R′3—(C═O)—, —SO2—R′3—SO2— or —(C═O)—O—R′3—O—(C═O)—, Y represents —(C═O)—R4 or —SO2R5, R2 represents a C1-8 alkyl group, n is 0, 1 or 2, R3 represents C1-30 alkyl or C3-30 alkenyl, R′3 represents a single bond or a divalent C1-30 alkylene or C3-30 alkenylene radical, R4 represents —OR6 or —NHR6, R5 represents C1-30 alkyl or a phenyl nucleus, R6 represents C1-30 alkyl or C3-30 alkenyl, and novel compounds of formula (2).
摘要:
A dyeing composition comprising at least one oxidation base chosen from para-aminophenol and para-phenylenediamine compounds substituted with a silane radical, and the dyeing method using this composition are disclosed. This composition is, for example, useful for dyeing keratinous fibers. The para-aminophenol and para-phenylenediamine compounds substituted with a silane radical are also disclosed.
摘要:
The invention concerns novel silicon compounds derived from ascorbic acid consisting of a silicon-containing chain or of silanes, comprising at least a radical A of formula (I) wherein: at least one of the radicals L is a divalent radical for fixing A on the silicon chain. The invention further concerns methods for preparing said compounds, compositions, in particular cosmetic or pharmaceutical, containing them, and their use as antioxidant and/or anti-free radical agent, particularly for treating oxidant stress, for treating the effects of exposure to the sun and for preventing ageing.
摘要:
Improvedly photostable, topically applicable cosmetic/dermatological sunscreen compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise (i) a photoprotecting effective amount of at least one dibenzoylmethane UV-screening compound, and (ii) an amount of at least one silane or organosiloxane substituted by a benzylidenecamphor functional group effective to photostabilize said at least one dibenzoylmethane UV-screening compound (i). Novel silanes or organosiloxanes substituted by a benzylidenecamphor functional group are also described.
摘要:
Improvedly photostable, topically applicable cosmetic/dermatological sunscreen compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise (i) a photoprotecting effective amount of at least one dibenzoylmethane UV-screening compound, and (ii) an amount of at least one silane or organosiloxane substituted by a benzylidenecamphor functional group effective to photostabilize said at least one dibenzoylmethane UV-screening compound (i).
摘要:
Stable, topically applicable cosmetic/dermatological sunscreen compositions, well suited for the UV-photoprotection of human skin/keratinous materials, contain a thus effective amount of at least one novel s-triazine compound bearing at least one para-aminobenzalmalonic salt substituent.
摘要:
Cosmetic/dermatological sunscreen compositions, suited for photoprotecting, e.g., the skin, lips, scalp and/or hair against the damaging effects of UV-radiation, contain thus effective amounts of at least one novel s-triazine compound tri-substituted with para-aminobenzalmalonate substituents.
摘要:
The invention relates to new s-triazine derivatives of the formula (I): in which R1 represents an —NH—F radical, wherein F is a screening chromophore; R2 represents an —NH—Z—W radical, wherein Z is a divalent radical providing the connection between —NH— and —W, and W is a silicone-containing radical; and R3 is R1, R2, a linear or branched C1-C20 alkyl radical, a linear or branched C2-C20 hydroxyalkyl radical, a linear or branched C1-C20 alkoxy radical, an NHR8 radical or an N(R8)2 radical, with R8 being a linear or branched C1-C20 alkyl radical. The compounds of the invention are useful as organic sunscreen agents in cosmetic compositions intended for the protection of the skin and the hair against ultraviolet radiation. The invention also relates to the use of the compounds in cosmetic applications and to cosmetic compositions with improved properties containing these compounds.