What purpose does the under eye sticker serve during eyelash application?

The purpose of using an under eye sticker during eyelash application is to effectively separate the bottom lashes from the top lashes. This separation is crucial to prevent the bottom lashes from getting bonded together with the extensions being applied to the top lashes. By using these stickers, lash artists can work more efficiently and ensure that the top lashes receive the precise application without interference from the lower lashes. Additionally, this practice promotes a cleaner application and helps achieve a more polished final look.

While enhancing appearance, moisturizing, or providing pigmentation are not goals for the under eye stickers in this context, their main function remains the clear demarcation and protection of the lower lash area during the lash extension process.