Topically applicable cosmetic/dermatological sunscreen composition well suited for the enhanced UV-photoprotection of human skin and/or hair, contain synergistically UV-A.sub.PPD -enhancing amounts of (i) at least one UV-screening silicon compound having a benzotriazole functional group substituent, (ii) at least one UV-screening dibenzoylmethane compound, and (iii) at least one UV-screening amino-substituted 2-hydroxybenzophenone compound having the following structural formula (III): ##STR1## formulated into (iv) a topically applicable, cosmetically/dermatologically acceptable vehicle, diluent or carrier therefor.

Cosmetic/dermatological tópico aplicables sunscreen la composición satisfecha bien para el uV-photoprotection-photoprotection realzada de la piel humana y/o el pelo, contiene sinérgico UV-A.sub.PPD - realzando cantidades (i) por lo menos de un compuesto del silicio de la UV-investigacio'n que tiene un sustituto funcional del grupo del benzotriazole, (ii) por lo menos un compuesto del dibenzoylmethane de la UV-investigacio'n, y (iii) por lo menos un compuesto amino-substituido UV-investigacio'n 2-hydroxybenzophenone que tiene el fórmula estructural siguiente (iii): ## del ## STR1 formulado en (iv) un vehículo tópico aplicable, cosmetically/dermatologically, un diluyente o un portador aceptable por consiguiente.

 
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