How do I use the antiperspirant?Updated a month ago

Here are the instructions on how to change and insert the refill cartridge into the component:

1. Grip the base of the rollerball and pull straight up.
2. Unscrew the cap of your refill and discard it
3. Screw the rollerball onto the refill.
4. Insert the refill with the rollerball back into the case until you hear a small click.