Can the main ingredient of restylane (hyaluronic acid) cross the blood brain barrier?

Question

I am a sensitive person and want to get a face filler like restylane. I would feel a lot happier using a filler where I know it won't cross the blood brain barrier. Does anybody know where its documented anyway whether the hyaluronic acid can/can't cross it? I know from research that a hyaluronan molecule is large but I'd much prefer to see it in writing specifically about the filler. Thanks.

Of course i could get a collagen filler, as there is no way that collagen can pass blood brain barrier.

Answer 1

Here you go....Medical Journal Study on HA...even injected epidurally :)

http://www.anesthesia-analgesia.org/cgi/...