Anti wrinkle injections use Botulinum Toxin A which is a prescription muscle relaxant medicine that is distributed under many brand names. It works by partially blocking nerve impulses and the effect depends upon where it is injected. If injected into a muscle it will reduce excessive contractions of that muscle.
It can commonly be used for temporary improvement in the appearance of forehead horizontal lines, vertical lines between the eyebrows (glabella) seen at maximum frown and fan-shaped lines from the corner of the eyes (crows-feet) at maximum smile.
This product can also be used to slim and lift the jaw, reduce or soften the wrinkles on the side of the nose, arch the eyebrow, reduce over elevation of the top lip during smiling, treat a 'pebbled' chin and elevate downturned corners of the mouth.
Depending on the area treated, dose used, and how you respond, repeat treatments will be required every 3 to 6 months.