Had lip filler injected, brand called "Hyaldew" by "uBiosoft" however, now worried about the source!

The doctor injected this filler free of charge due to my long lasting lumps and so far it seems like it had evened my lips (waiting on swelling to go down). However, he used a brand I've never seen before called Hyaldew by uBiosoft and I have suddenly become very concerned about the source of the HA. Is it animal or synthetic? Does anybody know? I feel awkward asking the doctor now, especially because it was free of charge. Please advise!