Injectables: Are Restylane and Hylaform the Next "Must Haves"?

New York, NY (November 13, 2003) — The list of cosmetic soft tissue fillers on the market and in the pipeline worldwide is growing rapidly. Many have been introduced with great fanfare; relatively few stand the test of regulatory or peer review - as well as the test of time. On November 21, the Food and Drug Administration (FDA) will consider the Pre-Market Approval application (PMA) of two hyaluronic acid-based dermal filler products, marketed under the names Restylane and Hylaform, which have been used to fill wrinkles in Canada and Europe, but have not yet been approved for cosmetic use in the United States.

"FDA approval of Restylane and Hylaform could be the biggest news in dermal fillers since the advent of injectable collagen in 1981," says Leroy Young, MD, Chair of ASAPS' Nonsurgical Procedures Committee.

Restylane and Hylaform are used for soft-tissue filling of lips and facial lines and wrinkles. The hyaluronic acid in Restylane and Hylaform, although biosynthetically produced, is almost identical to that existing naturally in all living organisms. Hyaluronic acid is a key structural component of the skin, creating volume and shape; it also acts as a lubricant and shock absorber in the joints. Hyaluronic acid concentrations throughout the human body decline with age, causing undesirable changes in the skin.

Hyaluronic acid was first used commercially in 1942. In the last two decades, therapeutic and aesthetic uses have expanded. In the United States, hyaluronic acid has been used in eye surgery as a "shock absorber" to protect the retina, and it has been proven effective in lubricating arthritic joints.

"As patient advocates, plastic surgeons are responding to their patients' desires for less invasive procedures with little or no downtime; obviously the 'perfect' soft tissue filler would be long-lasting, would fill wrinkles and folds, and would plump up the lips with no allergic reactions and no side effects," says Dr. Young. "Even if the advisory panel approves Restylane and Hylaform this month," he continues, "the jury is still out until the FDA rules on their safety and effectiveness."

Jay Burns, MD, chair of the ASAPS Facial Surgery Committee, agrees. Dr. Burns notes that the efficacy of Restylane and Hylaform is dependant on many variables. "While clinical trials appear to demonstrate that these products may be effective for up to one year for treatment of wrinkles and six months for lip augmentation, results are not the same in every case. Injection technique may be a factor, as well as individual patient variables."

Dr. Burns adds that FDA approval would facilitate more meaningful clinical evaluation of the benefits and possible risks of both Restylane and Hylaform. "When plastic surgeons have the opportunity to gather data based on large numbers of patients over an extended period of time, we will have a much better idea of these products' 'niche' within the entire range of soft tissue fillers," he says.

According to statistics from the American Society for Aesthetic Plastic Surgery (ASAPS), nearly 6.9 million Americans underwent cosmetic procedures, both surgical and nonsurgical, in 2002. The greatest increase in the past five years has been in nonsurgical procedures.

About ASAPS
The American Society for Aesthetic Plastic Surgery (ASAPS), is recognized as the world’s leading organization devoted entirely to aesthetic plastic surgery and cosmetic medicine of the face and body.  ASAPS is comprised of over 2,600 Plastic Surgeons; active members are certified by the American Board of Plastic Surgery (USA) or by the Royal College of Physicians and Surgeons of Canada and have extensive training in the complete spectrum of surgical and non-surgical aesthetic procedures. International active members are certified by equivalent boards of their respective countries. All members worldwide adhere to a strict Code of Ethics and must meet stringent membership requirements.

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