A combination for surface treating powder, composed of (I)organopolysiloxane or condensate thereof and (II)organopolysiloxane in a weight ratio of (I):(II) of from 95:5 to 5:95 (I)organopolysiloxane or condensate thereof and (III) acryl/silicone copolymer in a weight ratio of (I):(III) of from 95:5 to 5:95 or (I)organopolysiloxane or condensate thereof, (II)organopolysiloxane and (III) acryl/silicone copolymer in a weight ratio of (I):[(II)+(III)] of from 95:5 to 5:95, provided that each of (I), (II), and (III) may be packed together or separately, wherein (I)organopolysiloxane is represented by the following formula (1), €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R 1 a (OR 2 ) b SiO (4-a-b)/2 €ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein R 1 may be the same with or different from each other and is a C 1-30 alkyl, aryl, aralkyl, fluorinated alkyl or amino-substituted alkyl group, R 2 is a C 1-6 alkyl group, a is the number of from 0.75 to 1.5, and b is the number of from 0.2 to 3, provided that a sum of a and b is greater than 0.9 and at most 4 (II)organopolysiloxane is represented by the formula (2) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R 3 c R 4 d R 5 e SiO (4-c-d-e)/2 €ƒ€ƒ€ƒ€ƒ€ƒ(2) wherein R 3 may be the same with or different from each other and is a C 1-30 alkyl, aryl, aralkyl, or fluorinated alkyl group, R 4 is a hydrogen atom, a hydroxyl group or a C 1-6 alkoxy group and is bonded to the Si atom in the formula (2) via a group comprising carbon, oxygen, or silicon atom, and R 5 is a silicone compound residue represented by the following formula wherein R3 is as defined above, c is the number of from 1.0 to 2.5, d is the number of from 0.001 to 1.5, and e is the number of from 0 to 1.5, x is an integer of from 1 to 5, and y is an integer of from 0 to 500 and (III) acryl/silicone copolymer has at least one hydrolyzable silyl group.본 발명은 수소 가스를 발생시킬 우려가 없고, 분체의 내수성 및 피부 또는 두발로의 밀착성을 향상시킨, 표면처리제계 및 상기 처리제계로 표면 처리된 분체, 또는 상기 분체를 함유하는 화장료에 관한 것으로서,하기 (Ⅰ)오르가노폴리실록산 또는 그 축합물, (Ⅱ) 오르가노폴리실록산 및 (Ⅲ) 아크릴 실리콘 공중합체를, (Ⅰ)과 (Ⅱ)