PURPOSE: The title composition having improved water repellency, weatherability, water resistance for a long time, and drying properties in coating, comprising a conjugated isomerized (semi)drying oil and paraffin wax.

CONSTITUTION: A composition comprising (A) one or more types selected from a conjugated isomerized (semi)drying oil, e.g. linseed or soybean oil, and a blown oxidized polymerized oil or heat polymerized oil, (B) one or more types selected from paraffin, microcrystalline, and petroleum synthetic waxes, e.g. low-molecular polyethylene having a molecular weight of 1,000W4,000, and/or (C) one or more types selected from metallic soap of fatty acid, naphthenic or octylic acid, preferably in a ratio of (A) to (B) of 60W99.9%: 0.1W40%, (A) to (C) of 95W99.999%: 0.001W5%, or (A):(B):(C):of 60W99.9%:0.1W40%:0.001W5%.