I found these Seki eyelash curler replacement pads in Boots (the one by Bond Street tube station). They say on the back of the packet that they are “silicon rubber” so I assumed they would be as squishy (and thus as effective) as the original pad on my Shiseido curlers but they’re not quite as squishy. However, they’re not nearly as hard as most curler pads… so they’re not too bad. And I only paid £2.99 for a pack of four. Probably worth just buying the Shiseido pads in future though!
Cheap silicone eyelash curler replacement pads