Cluster lashes or flares typically consist of groups of 5 8 blunt end cluster eyelashes knotted together in a bunch these cluster eyelashes add instant fullness because of their multi lash flare and they tend to be smaller and shorter than false eyelash strips they can be applied either directly to the skin between natural lashes or on top of a grouping of existing lashes they are slightly more natural in appearance than false eyelash strips