Ardell's Duo Underlash Bond & Seal is a two-part adhesive system that lets you apply any false lash as an underlash rather than the usual strip-on-top placement. The Bond component, applied to the natural lash base, holds for up to 10 days and is built from an acrylate copolymer rather than the cyanoacrylate found in many standard lash glues -- a genuine formulation difference worth knowing if you're comparing adhesives.
The Seal component goes on next to remove any tackiness left by the Bond and adds to how long the placement lasts. The kit includes precision micro-spoolie applicators for controlled application and a dedicated remover for taking lashes off without tugging at natural lashes. As with any adhesive applied near the eyes, a patch test before first use is a sensible precaution, even though it isn't printed as a step-by-step instruction on the packaging. This is specifically an underlash system -- it isn't interchangeable with Ardell's standard brush-on strip lash adhesive, which is a different, single-formula product.
