Vibrating roller bottle is refiller design with high price, you can refiller serum by DIY. When two pieces Button batteries is finished, you also can change it by yourself.
This roller bottle is design for eye gel , eye serum, the formoular should be good fluidity. it massages the skin around your eyes to stimulate bloodcirculation.
The metal ball is cool, Eye roll-ons control the pressure applied as they move more gently over skin.
Eye roll-ons are more convenient to use and do not require you to wash your hands before applying. Also, you won’t get leftover serum under nails.