Titanium is from OPI Designer Series Collection Fall 2014. It is a grey, sheer base filled with iridescent shimmer and glitter. It is very sheer, which meant I needed 4 coats to make it look acceptable, by which time it looked thick on the nail. On me, it looked like a sparkly mess. Usually silvers and greys suit my skin tone, but with occasional bronze glitters, this polish was warm leaning, so it didn't suit me at all. Removal was difficult too, but I guess, it is to be expected with a glitter polish. I can't speak for the overall longevity of this polish, as I hated it so much I took it off after 1 day. I hoped it would grow on me, but it didn't. Despite the fact I bought it on sale, I still feel I was robbed with this one. I can't recommend this polish, as I will be throwing mine away.P.S. I have read in one of the blogs that this polish works better layered over a dark base.