PALO ALTO, CA--(Marketwired - Oct 21, 2014) - Dermal fillers, many of which are comprised of hyaluronic acid (HA), are used to help treat common signs of facial aging, explains Dr. Lauren Greenberg, a plastic surgeon in Palo Alto. However, she says, it is important to note that not every hyaluronic acid-based product is appropriate for this use. According to a recent FDA announcement, some medical professionals are reportedly using an HA-based formula as a dermal filler despite the fact it is not designed for this purpose. As a result, some patients are experiencing unexpected side effects. In order to avoid this, Dr. Greenberg advises patients to look for a practitioner who is using recognized cosmetic soft tissue fillers intended for use in the face.

To assist individuals in their research, Dr. Greenberg explains which hyaluronic acid filler patients should not use when considering non-surgical facial rejuvenation. The FDA alert states that a hyaluronic acid-based gel called Expression or Expression Injectable, which is designed for use as an intranasal splint for rhinoplasty, has been associated with adverse effects when utilized as a dermal filler. The events reported include painful swelling, lumps, discoloration, and the development of hard nodules. The release clarifies that Expression is not FDA-approved as a dermal filler. Furthermore, the FDA recommends that licensed injectors stop using this substance as an injectable solution.

Fillers made for cosmetic use are available from well-known brands such as Restylane® and JUVÉDERM®, which have been studied and in the cosmetic marketplace for years. Other soft tissue fillers like Sculptra® Aesthetic are not HA-based, but have also been designed for and used in the face for years, says Dr. Greenberg. She advises patients to carefully research both the injector and the dermal filler before initiating treatment, adding, "If it is a lower cost than normal and seems too good to be true, research the injector and the filler."

Ultimately, Dr. Greenberg says she strives to educate her patients on popular cosmetic enhancement products and procedures, including both the benefits and risks involved in treatment. Offering high-quality, FDA-approved options is of the utmost importance to her, she affirms, as well as helping to ensure patients are well informed.

About Lauren Greenberg, MD

Certified by the American Board of Plastic Surgery, Dr. Greenberg is a graduate of Northwestern University Medical School. She completed residencies in both general surgery and plastic surgery at Stanford University, as well as a fellowship in Breast and Cosmetic Surgery in Nashville, TN. She is a member of several prestigious medical associations, including the American Society of Plastic & Reconstructive Surgeons and the California Medical Association. She is also the recipient of numerous awards, such as the Patient's Choice Award for California's Favorite Physicians. She is available for interview upon request.

For more information about Dr. Greenberg and her practice, please visit and

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Contact Information:

Lauren Greenberg, MD
750 Welch Rd., Ste. 117
Palo Alto, CA 94303
(650) 617-9907

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(858) 200-0044