I’ve used this lube in a few cubes, such as my bell v2 pyraminx and my zhilong mini 4x4, and they are now super smooth. One issue I had was when I tried to open them, the lube had spilled out of the container which made the tape very hard to take off.
MAKE SURE YOU KEEP IT UPRIGHT OR ELSE IT WILL SPILL
(this is not the case for gravitas)