This organic group-modified organosilicon resin is represented by the average composition formula (1). (R13SiO1/2)a(R23SiO1/2)b(R33SiO1/2)c (R12SiO2/2)d (R1SiO3/2)e (SO04/2)f (1)[a, b, c, d, e and f are numbers that satisfy 0 ≤ a ≤ 400, 0 <； b ≤ 200, 0 ≤ c ≤ 400, 0 ≤ d ≤ 320, 0 ≤ e ≤ 320, 0 <； f ≤ 1,000, and 0.5 ≤ (a+b+c)/f ≤ 1.5.]Because this organic group-modified organosilicon resin can form films softer than those formed with trimethylene siloxysilicate, the cosmetic obtained by blending with said silicon resin feels good when used, has good cosmetic holding properties, spreads easily and has an excellent finish, easy removal, and superior scratch resistance.
