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There are many products on the market to choose from when it comes to picking the filler itself but it’s advisable to choose FDA approved fillers such as Restylane and Juvederm because more clinical data was required for approval of these than the European in terms of long term safety and efficacy, so there is less chance of adverse reaction in patients.
Although it is very important to acknowledge here that an experienced and skilled practitioner is a key factor in safe treatment.