A lash lift reversal treatment is a procedure that attempts to undo, relax, or soften the effects of a lash lift and return the lashes closer to their natural shape when the results are undesirable—such as lashes being over-curled, frizzy, kinked, uneven, or lifted in the wrong direction. A conditioning treatment is when nourishing serums or keratin treatments are applied afterward to help repair and hydrate the lashes.