Non-surgical procedures usually involve injections of either fillers or botulinum toxin, and carry less serious risks than surgery in general. However, over-correction can be difficult to treat, as can asymmetrical placement of the filler and allergic reactions.
Usually, the manufacturers include patient information leaflets, which should cover these points. Risks can be minimised by choosing a reputable surgeon or an established nurse practitioner who is working in a clinical environment.
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