Mar 19, 2020· The basics: Lash lifts, AKA eyelash perms, use perming cream to semipermanently curl your eyelashes.A black tint can be added to enhance the results. Best for: all types of eyelashes, including short and straight. Results: last for 6–8 weeks. Treatment time: about an hour total. Care: avoid getting your lashes wet and wearing mascara for 24 hours.Avoid lash extensions for 48 hours.