Here’s what consumers have asked with answers from Restylane staff and previous consumers.
Restylane is actually FDA approved. I've read up about it. Mostly there could be swelling and bruising upto two weeks after the Restylane filler injections to eyelids or cheeks. Sometimes you get lumps which have to be dissolved with hyaluronidase. You can also get actually dangerous or painful allergic reactions.
A number of doctors are recommending the use of Restylane here and internationally and at least a couple of the fillers are FDA approved.
Filler injections last anything from six months to a year. But they have to be renewed if you want to maintain the result.