The Mannequin Eyelash Head is the must have practice item for anyone learning or trained in extensions . The key to being an awesome Artist is practice and lots of it. Yes we can practice our skills on real clients, but the finesse of those skills can be developed away from a real person.
When working clients, they will usually have a specific request as well as us working to a time limit to complete a set. This can restrict the artist developing their skills. A mannequin eyelash head does not have these constraints, instead you can do what you want on, spending as much or as little time as you want.
Of course this is no substitute for real clients, but it is a must have training tool for the artist that wants to develop their skills and be the best they can.