How to choose the right eyelash extension length (EC) for your client. In classical (1: 1)
You have to measure your client’s natural eyelashes (CN), if she has 10mm of CN and less, you have to calculate + 2, which would make 12mm for EC.
If it has 11mm of CN and more, you have to calculate +3, which would be 14mm for the EC.
* You must never exceed more than 15mm for EC all the time!