You can find nail files anywhere that sells beauty supplies, including drug stores and many grocery and dollar stores. Most knife sharpeners are too wide for your tweezers to fit around. Using a nail file will prevent you from having to stretch out your tweezers in order to sharpen them.
Hold the nail file and tweezers securely so they don’t slip.
You’ll probably need to do this about 3-4 times in order to get the tweezers sharp again.
It’s also a good idea to sanitize your tweezers each time you use them to prevent the spread of infection. A simple way to do this is to wipe them down with alcohol.
This will help buff out any rough edges left by the sharpening process.
If you hold the tweezers so only the sharp point is touching the nail file, you’ll just file away the tip.
Only do this lightly. If you file too much on the edge of the tweezers, you’ll actually make them duller. If your tweezers still seem dull after you do this, you probably need to sharpen the grabbing surface inside the blades again. [8] X Research source You can also do this to sharpen a flat edge on tweezers. Just hold the tweezers flat instead of at an angle.
To keep from accidentally closing the tweezers, it may help to hold them near the bottom.
An ink pen will work as well, but be careful not to accidentally break the pen, or ink could get everywhere!
If the tweezers have gotten bent, you may need to also squeeze the bottom, near the hinge.