All dermal fillers have their own risk profile.
In general, the major risk of animal-derived collagen fillers is an allergic reaction.
Sometimes even though one has had a negative allergy test, a delayed allergic response has occurred in a few individuals
In most cases, human based collagen injections are tolerated and have desirable results
The risk of acquiring disease from collagen injections is very rare because the products are extensively screened for infections prior to use.
The ideal lip filler is not available but the closest to ideal are products derived from hyaluronic acid. Both Restylane and Hylaform are jelly like chemical derived from
hyaluronic acid. These products produce nice plump and luscious lips with minimal side effects. The jelly like consistency produces soft and succulent lips.
Restylane is not extracted from animals. This means no risk of allergic reaction. Therefore, it is perfectly safe to use instantly without pre-testing.
Lip augmentation is performed by injecting Restylane under your skin. Since no pre-test is needed, your procedure can usually be done in less than 30 minutes. Many patients like the added comfort provided with an anesthetic cream, while others prefer an anesthetic block. This makes the treatment relatively painless.
Following your injections, normal activities can be resumed immediately. Discomfort is minimal. The treatment site may have a little swelling, which may last a few hours. There may be some slight bruising which can be covered with make-up.
Depending on the area treated, correction can last up to six months or longer. If the lips are treated, initial swelling and tenderness may occur within the first several days, but subsides after two or three days.
Permanent lip fillers are available and include Artecoll and Gore-Tex. They do carry several risks such as skin necrosis, granuloma formation. and extrusion of the implant. Most individuals who undergo permanent implants have had some prior experience with temporary implants and have a realistic expectation of the results.
Fillers are expensive but the pricing varies depending on the number and types of areas being treated and the amount of filler material required. Treatments can range from several hundred to several thousand dollars. Remember that temporary fillers last at most 3-9 months.