How often should I replace the silicone pad on an eyelash curler?

Most brands recommend swapping the pad every 3 to 6 months of regular use, sooner if it shows a crease or split. A worn pad is the most common reason a previously good curler suddenly starts crimping or pulling lashes, so several top picks (Tweezerman, Shiseido, Kaasage, Shu Uemura) ship with at least one refill pad in the box.