Oil-based liquid cosmetic
The present invention is an oil-based liquid cosmetic containing: 60% by mass or more of polydimethylsiloxane (A); 0.01 to 1% by mass of N-acyl-L-glutamic acid dialkylamide (B); and 0.5 to 35% by mass of a compatibilizer (C) for compatibilizing the component (A) and the component (B). The oil-based liquid cosmetic preferably has a viscosity that is measured using a B-type rotational viscometer at 25° ° C. of 5 to 100,000 mPa·s.
1 . An oil-based liquid cosmetic comprising:
60% by mass or more of dimethylpolysiloxane (A),
0.01 to 1% by mass of N-acyl-L-glutamic acid dialkylamide (B), and
3 to 35% by mass of a compatibilizer (C) for compatibilizing the component (A) and the component (B), wherein the compatibilizer comprises an ester oil that is liquid at 25° C. or a phenyl-modified silicone that is liquid at 25° C.
2 . The oil-based liquid cosmetic according to claim 1 , wherein the N-acyl-L-glutamic acid dialkylamide has an acyl group having 8 to 18 carbon atoms and the alkyl group having 1 to 8 carbon atoms.
3 . The oil-based liquid cosmetic according to claim 1 , wherein the dimethylpolysiloxane has a kinematic viscosity of 200 to 20,000 mm 2 /s at 25° C.
4 . The oil-based liquid cosmetic according to claim 1 having a viscosity of 5 to 100,000 mPas as measured by a B-type rotary viscometer at 25° C.
5 . The oil-based liquid cosmetic according to claim 1 , wherein a content of the component (B) is 0.03 to 0.5% by mass.
6 . The oil-based liquid cosmetic according to claim 1 , which is a liquid lipstick, a lip gloss, a lipstick overcoat, a lipstick base or a lip essence.
7 . An oil-based liquid cosmetic according to claim 1 , wherein the compatibilizer comprises an ester oil that is liquid at 25° C.
8 . The oil-based liquid cosmetic according to claim 7 , wherein the ester oil comprises isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, ethylhexyl palmitate, cetyl ethylhexanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, diisostearyl malate, isodecyl neopentanoate, hexyl laurate, 2-hexyldecyl laurate, isotridecyl myristate, isocetyl palmitate, isodecyl palmitate, isostearyl palmitate, 2-octyldecyl palmitate, isopropyl stearate, 2-octyldodecyl stearate, isostearyl isostearate, 2-octyldodecyl erucate, caprylic/capric triglyceride, triethylhexanoin, diglyceryl triisostearate, decaglyceryl decaisostearate, diglyceryl tetraisostearate, neopentyl glycol dioctanoate, or dicaprylyl carbonate.
9 . An oil-based liquid cosmetic comprising:
60% by mass or more of dimethylpolysiloxane;
0.01 to 1% by mass of N-acyl-L-glutamic acid dialkylamide; and
3 to 35% by mass of an ester oil that is liquid at 25° C. or a phenyl-modified silicone that is liquid at 25° C., wherein the cosmetic is a liquid.