Retention MasteryRetention Mastery is your complete guide to creating lash sets that actually last. Inside this course, youll learn the science behind great retention: how adhesive really works, how to control humidity, how to prep properly, and how to place lashes in a way that keeps them secure for weeks. Youll uncover the most common retention mistakes (and how to fix them), master lash mapping that supports longevity, and build a full client care system that helps
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