The high risk areas for arterial/venous occlusion when injecting dermafillers are the temple, glabella, nose, cheek, nasolabial folds, lips, and lower face.
It is virtually the entire face.
Injury of vessels may result in embolisation (resulting in visual loss), blockages (tissue necrosis), severe bruising, and volume compression. There can also be injury to nerves.
Sick of deep lines on your face? Wishing you could get a quick fix for the signs of aging around your mouth and eyes? You may think that Botox is your only option, but in fact there are other injectable cosmetics that plastic surgeons use to treat some lines on the face. That's why it's important for individuals to understand the difference betweeninjectables like Botox and facial fillers, like Juvederm.
What Botox does
According to the American Society of Aesthetic Plastic Surgeons (ASAPS), Botox is a neuromuscular toxin, and while it is the most widely recognized brand name for this type of cosmetic, there are other variations that have FDA approval, namely, Dysportand Xeomin. The injectable medicine is used to treat "active" facial lines, meaning those that have only recently formed. A board-certified plastic surgeon will inject the cosmetic into facial areas that are associated with the formation of wrinkles. For example, the muscles you use to frown may be responsible for lines around the mouth, so a plastic surgeon can use Botox to artistically alter facial expressions. This won't result in a loss of the ability to show emotions on the face - the intention is to make subtle changes that will stop lines from forming while promoting a natural appearance.