How do I refill the case for Estrid's deodorant and antiperspirant?Updated a month ago

Refill your deodorant or antiperspirant in three easy steps:

1. Disassemble: Remove the cap, unscrew the roller ball, and remove the bottom of the clear case. 
2. Assemble: Unscrew the cap from the refill, insert the refill through the bottom of the case, and secure it into place. 
3. Lastly, screw the roller ball on tight and push the bottom of the case back until it clicks into place.