The first step of the Brik & Pearl system, and the reason the results hold. Bond Flex pairs two reducing agents instead of relying on one, so you get the speed of a traditional lift with the control of a gentler chemistry. That combination is what lets you take on the lashes that used to fight you: fine, coarse, downward-growing, previously overprocessed. Its higher-viscosity texture suits freestyle techniques, glueless methods and Korean-inspired applications. KeraVeg-18 plant protein works through the service rather than after it, with supplier testing showing chemically treated hair up to 21 percent stronger. One airless bottle covers around 40 services.

How to use it, what is in it, any cautions: just ask Ellee, our product expert in the Polymorph Beauty app.