What is a Korean lash lift? Korean lash lift reshapes the disulfide bonds inside your natural lash so it holds a new, lifted shape. That part is the same as any lift. What's different is the chemistry and the technique. Traditional lash lifts use a thioglycolic acid (TGA) formula and glue the lashes to a single silicone shield. Korean systems use a cysteamine-based formula — a milder, non-thio alternative — and most are glueless. The lashes are softened in place and then wrap