Tā de tóufa hǎojǐ tiān méi xǐ le, kàn shangqu yóunìnì de.
His hair hasn't been washed for days and looks greasy.
Tips
grammar
An ABB adjective: 油 'oil' with the doubled 腻 'greasy' makes the description vivid and a little unpleasant. Like other ABB words it takes 的 and never 很: say 油腻腻的, not 很油腻腻.
