We highly recommend to use 3M Microfoam Tape 1528-1 before lash extension treatment. This elastic hypoallergenic tape gives all-direction stretch, is water resistant and latex free. 
 
LORETA'S TIPS:
Cut 3M Microfoam Tape 1528-1 to the size and dimension that matches perfectly your customer's lower lid, it adapt, stretch and conform to the natural eye shape while providing secure adhesion during treatment.
 
3M Microfoam Tape 1528-1 has a thicker foam padding that also helps to protect the skin from accidental contact with your tweezers pointy tips.