Microemulsion composition and cosmetic containing the same

A microemulsion composition comprising:

• (A) a polyether-modified organopolysiloxane shown in the following general formula (1) having an HLB of 8.0 or more calculated by Griffin's method,
• wherein R1s represent identical or different types of alkyl groups, aryl groups, or aralkyl groups having 1 to 30 carbon atoms or halogen-substituted groups, amino-substituted groups, or carboxy-substituted groups thereof,
• R2s represent identical or different polyoxyalkylene groups shown by the following general formula (2),
• (CH2)2-ClH2l—O—(C2H40)b(C3H6O)cR5 (2)
• wherein R5 represents an unsubstituted or substituted monovalent hydrocarbon group or a hydrogen atom, “l”, “b”, and “c” are integers that satisfy 0≤l≤15, 2≤b≤200, 0≤c≤200, and 3≤b+c≤200,
• R3s represent identical or different types of groups shown by one of the following general formulae (3) to (6),
• —(CH2)2—CmH2m—(SiOR12)d—SiR13 (3)
• —(CH2)2—CmH2m—SiR1e1—(OSiR13)3-e1 (4)
• —(CH2)2—CmH2m—SiR1e1—(OSiR1e2(OSiR13)3-e2)3-e1 (5)
• —(CH2)2—CmH2m—SiR1e1—(OSiR1e2(OSiR1e3(OSiR13)3-e3)3-e2)3-e1 (6)
• wherein R1 is as described above and “m”, “d”, and e1 to e3 are integers that satisfy 0≤m≤5, 0≤d≤500, 0≤e1≤2, 0≤e2≤2, and 0≤e3≤2,
• R4s are each independently R1, R2, or R3, a1 is a number that satisfies 0≤a1≤100, a2 is a number that satisfies 0≤a2≤50, and a3 is a number that satisfies 0≤a3≤50, provided that at least one R4 is R2 when a2 is 0;
• (B) a polyether-modified organopolysiloxane shown in the following general formula (7) having an HLB of 5.0 or less calculated by Griffin's method,
• wherein R1, R2, R3, and R4 follow the above definitions, a4 is a number that satisfies 0≤a4≤100, a5 is a number that satisfies 0≤a5≤50, and a6 is a number that satisfies 0≤a6≤ 50, provided that at least one R4 is R2 when a5 is 0;
• (C) a glycerol derivative shown in the following general formula (8),
• Gly-{O—(PO)f(EO)g(BO)hH}3 (8)
• wherein Gly represents a residue in which a hydroxy group is removed from glycerol, PO represents an oxypropylene group, EO represents an oxyethylene group, “f” and “g” are respectively average numbers of moles of PO and EO added, f+g indicates a value of 1 to 30, a mass ratio of PO to EO, that is, PO/EO is 1/5 to 5/1, BO represents oxyalkylene having 4 carbon atoms, and h is an average number of moles of BO added and indicates a value of 1 to 5;
• (D) a polyhydric alcohol other than the (C);
• (E) a silicone oil having a kinematic viscosity of 20 mm2/s or less at 25° C.;
• and
• (F) water,
• wherein a ratio (A)/(B) of a mass of the (A) to a mass of the (B) satisfies 1.0 to 15.0 and the microemulsion composition has a transparent to translucent appearance at 25° C.