We purchase from the largest and most trusted manufacturers in Korea who export their products to many countries globally. These companies have been recognized as outstanding manufacturers from various organizations worldwide, including the KFDA (Korea Food and Drug Administration), MHLW (Japan Ministry of Health, Labour and Welfare), ISO (International Standard Organisation), CE (Conformite Europeenne), KGMP (Korea Good Manufacturing Practice) and UKAS (United Kingdom Accreditation Service). These contact lenses do not pose a health risk any more than regular conventional contact lenses do. If you follow proper contact lens care instructions (e.g. disinfecting, rinsing and storing them in solution, washing your hands with antibacterial soap before touching them, not wearing them for extended periods, not sleeping wearing them, etc.), you should have no health issues concerning the use of not just these lenses, but any kind of contact lenses. These lenses, just like regular contacts, come in hermetically sealed vials in buffered, sterile saline solution. Therefore, they are safe to wear, but your health, again, depends on how well you follow a hygiene regime!