Singletto is marketing a methylene blue product called Oxafence Active Protection ... Singletto is partnering with Prestige ...

Dr Kelly Fearnley said she was given just a blue surgical mask for work in a Covid ward Two West Yorkshire medics left with long Covid after working on the pandemic front line have said their ...

Singletto is marketing a methylene blue product called Oxafence Active ... the largest wholly domestic surgical mask maker in the U.S., to manufacture Oxafence-containing masks.