Not as advertised
This is not at all as advertised. On arrival, it appeared to be a bottle filled with clear liquid, with no ferrofluid in it. When I realized that all the ferrofluid had been stuck in the cap of the bottle, I knocked it loose with a toothpick. Now I have several black chunks of solid material in the bottle, which do not act like a fluid at all. Not worth the money.
Rating: 1 stars