Improper use of an eyelash curler can break your eyelashes, so it’s important to use it with care, which includes not gripping too heavily and not using it daily. Keep the curler sterilized before use to avoid transferring bacterial infections to your eyes and lashes. A heated eyelash curler that is too hot can damage your eyelashes and may even cause them to fall out and it can also burn your skin; do not use it hot. Finally, do not wear mascara when curling your eyelashes as this can make them too brittle and may cause them to break; add it after curling.