Biomedical engineers at John Hopkinshave combined hyaluronic acid HA with polyethylene glycol PEG ( tissue glue). They took this combination and exposed it to light energy which solidfied the HA /PEG combo. How they came to do this I don't know . At 3 months these “implants” were stable. So in the future we may combine a hyaluronic acid filler and PEG – inject it – expose it to light and now we have a more permanent, longer-lasting implant
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