Five years after Donald Trump declared a national COVID emergency, here's what the research says about face masks.

She adds that the mask has helped to "keep my skin tone looking more even" and faded marks on her face more quickly. O'Neill ...

Lovers of the Biodance Hydro Cera-nol Real Deep Face Mask swear it gives them glass-like skin that is glowy and hydrated. But does it work? We looked into it. Want more from NBC Select?