The light works great! love the consistency of the glue. the lashes have stayed on so well with this glue. you definitely need blue light glasses added to this kit to protect the lash artist’s eyes. it’s so bright it makes my head hurt but my blue light glasses I ordered off of Amazon work great to block the light to my eyes. my clients are just fine closed. the glue dries softer and less stiff than traditional lash extension glue. well done alibaba