Asked by Surigao 2nd District Representative Johnny Pimentel how face shields expire, DOH Secretary Francisco Duque says the styrofoam, usually glued on the face shield's point of contact with the wearer's forehead, is “subject to shelf life.”
Full story: https://www.rappler.com/nation/aglipay-question-face-shields-expiration-did-anyone-die-house-hearing-2021