These are two very different products and they have very different effects.
1. Neuromodulator brand names are Dysport, Botox and Xeomin (identical to Botox but without unnecessary molecular components)
Neuromodulators or more accurately, neurotoxins, are just what the name implies: The toxin molecules block signals from nerves that tell the muscle to contract. If a large quantity of toxin is injected into the blood stream, it would paralyze the muscles that keep you breathing. But, in very tiny precisely placed doses, it blocks muscles of expression that make you look angry or older than you want to look. The trick with toxins is giving just the right amount in exactly the right place so the muscles you want to work still do work. Wrong placement means a droopy eyelid or a crooked smile.
Areas that can be treated with toxins are the forehead lines, frown lines, crow’s feet, sniff lines (on the nose), smokers lip lines and the muscles that pull the corners of the mouth down. Neck muscles that make the neck look older can also be blocked so the neck looks smoother and younger. Aside from cosmetic reasons for using a toxin, there are medical reasons as well. For example, migraines and excessive sweating.
2. Dermal fillers brand names are Restylane, Perlane, Juvederm for medium depth filling, Belotero and Restylane Silk for very superficial filling and Juvederm Voluma for deep filling.
Most fillers are made of hyaluronic acid. This is a normal component of skin. As we age, the middle layer of skin degrades (from ultraviolet light exposure) and the skin wrinkes, sinks and sags. Most fillers are designed to fill in “dented” or creased areas. Also lending to the deflated effect is the aging skeletal scaffolding that undergoes slow reabsorption with age. Some fillers are meant to be injected deeply to achieve “reinflation” and can last for up to 2 years before dissolving. Fillers designed to be injected into the mid level fill in creases and other fillers will fill fine lines giving a smoothing effect. These produces usually last about 4 to 6 months.
If you don’t like the effect of a filler, it can be dissolved very quickly with an injection of an enzyme called hyaluronidase.
To avoid bruising, avoid taking pain medication (with the exception of Tylenol) and vitamins and mineral for at least two weeks prior to treatment. Plant extracts such as Bromelain or Arnica Montana, taken orally can help minimize and even prevent bruising. Some doctors like using soft bendabe cannulas for injecting in order to reduce to chance of bruising.