Cov khoom siv kho mob txias laser tau yooj yim siv hauv tsev. Yog tias koj tab tom txiav txim siab yuav khoom siv hauv tsev, muaj ob peb yam tseem ceeb uas yuav tsum tau xav txog.
Ua ntej, lasers sib txawv ntawm lawv cov zis thiab qee qhov yuav tsis muaj cov zis lawv thov. Qee qhov tiag tiag yog nonlaser teeb-emitting diodes (LEDs).
Qhov thib ob, qee cov khoom siv kho mob khaub thuas muag rau kev siv hauv tsev ua rau muaj kev lees paub txog qhov lawv tuaj yeem ua tau.
Qee qhov kev lag luam los pab koj poob phaus, tsis txhob haus luam yeeb, lossis loj hlob plaub hau. Lwm tus tshaj tawm tias lawv tuaj yeem kho mob migraines, ntshav siab, lossis lwm yam teeb meem xws li wrinkles. Qee qhov kev thov no tuaj yeem tsis lees paub.