For those single-lidders who find that constantly buying tape is a hassle or feel that the tape they buy doesn't fit their eyes well, this is an option for you. Cut your own! It is very inexpensive to buy a roll of 3M clear athletic tape in comparison to constantly buying pre-cut tapes. Also, you can find it at any Walmart or Target near the bandage section which is a nice alternative to going to an Asian beauty store if you don't have one nearby. Since one roll only costs around $3 USD, it is much more cost-effective to cut your own, plus you can adjust it to whatever shape you want. I found that a lot of pre-cut tapes aren't as wide or long as I want them to be, so it's nice to make it just right myself.
*Nexcare Flexible Clear Tape, 3/4"
First, cut the length that you would like your eyelid tape to be. I prefer mine to be a little longer (for when I am just at home or if I choose to wear it at night when I sleep) but it's up to your own preference.
Next, cut the tape in half lengthwise. You should have two long rectangular strips. Carefully place one strip where it won't get stuck to anything.
Take your scissors and round off the corners of the tape. You want to end up with a smooth, long oval. Do this for both tapes.
Cut the oval in half again, lengthwise.
Finally, round off the sharp corners once more. If you do this for all tapes (including the half you set aside in the beginning), you should end up with 4 eyelid tapes in the end.
If the tape is too wide, you can always make it skinnier or shorter on the sides. Practice makes perfect, so I would suggest making a few in different shapes and sizes to see what looks best on you. Just remember that you can always make it smaller but you can't make a cut tape bigger, so start out wider and longer in case you want to cut it down. Another thing that helps is to study the shape of pre-cut tapes and try to mimic it. After a few tries, it'll get much easier to cut it just the way you need. Hopefully this will save you in emergencies when you run out of tape and can't make it to the beauty store, or if you get frustrated with what's available. Good luck!