My fav eyeliner is Silky Girl's Double Intense Gel Eyeliner (Waterproof).
Instructions/Directions:
1. Take some hot water (not boiling and not warm) and pour it into a container with a lid. I use a eversilver cookware with a lid.
2. Then put your eyeliner pot with its cap on tight into the hot water filled container and close the lid like this;
3. Then wait up to 10-15mins or more depends on how dry is your gel eyeliner.
Tada!!! Your eyeliner is alive again. You can do this every time you want to use your eyeliner. I would suggest to do every time before use because the eyeliner gel won't clump on your eyeliner brush.
Good LUCK trying this method.
From,
A Gel eyeliner Lover. XOXO:)