"This stuff is pretty good, It really shined up my bird's feathers, he is a green cheek who should have very shiny emerald feathers, but he had more like grass colored. I used this and at first he refused to eat his food with it on there, so I started with only one drop mixed in really good for like three days, then moved up to two mixed well and then finally three barely mixed and finally he ate it without complaint... but maybe my bird is spoiled a little, lol."