Restylane injections are manufactured by a company called Q-med and marketed by Medicis. These are known the injectable dermal fillers and generally are considered very very safe. Restylane and Perlane both are made from the hyaluronic acid and are non animal-based. This helps as then you need not have the allergy tested before the injection is done at the intended area.
That said there can be still some allergies in some cases just because of the fact that it an external product being injected into the body.
The major side effects with Restylane injections are that
Pain will be there in some cases
Swelling is generally there in about one fifth of the cases and the swelling generally subsides after about 48 hours.
Redness and itching can also be there at the point of the injection I and in some cases there is tenderness also at the place where the injection was inserted. A lot of patients will also feel numbness and if that happens doctors will generally prescribe the a cold ice pack.
Post injection or post treatment care is very important to minimize the side effects of the Restylane injection and these careful steps are
Avoid getting into the sun for at least a week.
Do not go for any spa activity and also no tanning activity should be indulged in.
The best thing to do to minimize any side effects is to find and experienced surgeon which can guide through pre and post treatment procedures. That will help avoid unnecessary complications during the entire treatment period.
There have been around 1.4 million injections that have been done for Restylan and generally patients have not reported any major side effects. In about one fifth of the cases the swelling and redness has been reported which again subsides in a day or two.