RHA Fillers

RHA® is the first and only resilient hyaluronic acid filler designed for facial dynamics.

RHA dermal filler logo

The folds and lines and wrinkles on your face move with every facial movement. How a filler behaves in the skin determines if your natural expressions stay “yours”, or change to accommodate the filler.

Naturally behaving filler is key to maintaining a natural appearance whether your face is still or smiling or even pouting. The RHA collection of fillers was designed in Switzerland with special long-chain gel particles to be resilient and stretchy.

Dr. Fitzgerald is among a select group of physicians chosen to participate in the Revance PrevU program to establish clinical outcome in the U.S.

No one wants to look stiff or “done” from filler injections. Aside from the extremely important skill of your chosen injector, the choice of fillers and the strategy behind those choices call for a variety of filler densities and properties.


These smooth gel fillers come in 4 formulations to perfect and smooth moderate to severe wrinkles, lines and folds, and those troublesome lipstick lines. Suited even for the highly mobile lines around the mouth and lips, you’ll not notice where the filler is placed – nor will anyone else.

RHA closely mimics natural HA and still achieves:

  • A natural look at rest and in motion
  • Proven clinical effectiveness and duration up to 15 months*†
  • No delayed onset treatment-related adverse events were observed in the US clinical studies*


RHA dermal filler before and after results for Eliz

One week post – .6mL RHA2, 1mL RHA3, 1 mL RHA4

RHA wrinkle filler results after facial injections

One week post – 1 mL RHA2, .5 mL RHA3, 1.4mL RHA4

What are the Most Common RHA Filler Treatment Areas?

RHA fillers are most commonly injected into nasolabial folds, the deep lines and wrinkles that run vertically from the nose to the mouth. They can also add volume to areas with volume loss, such as the cheeks and underneath the eyes, and create symmetrical and pleasingly plump lips.

New! Redensity for Lipstick Lines

How Does Redensity Work?

RHA® Redensity is injected into the skin with an ultrafine needle to plump the skin to fill in and smooth away lines and wrinkles around the mouth (perioral rhytids).This smoothing effect has been shown to last 24 weeks (6 months) in 73% of the patients (137 out of 188 patients), and 52 weeks (12 months) in 67% of the patients (125 out of 188 patients).

RHA® Redensity is not a permanent gel. It slowly goes away as the body absorbs the gel. The smoothing and plumping effect will gradually disappear.


How Long Do RHA Fillers Last?

RHA fillers produce noticeably smoother, fuller, and more youthful-looking skin for up to 1 ½ years. How long your results last will be influenced by factors unique to you, such as your age at the time of treatment, the RHA formulation used, the areas being corrected, and the care you take of your skin following treatment.

During your initial consultation, Dr. Fitzgerald will help you determine how long you might realistically expect results to last, along with how we can help extend your results through maintenance treatments.

See additional before and atter photos of RHA fillers.

When Will I See the Results from RHA Filler Treatment?

Results from RHA fillers will begin to appear within 24 to 48 hours of treatment and continue to improve in the following days. Unlike other dermal fillers, which can take several weeks to achieve optimal outcomes, final results from RHA treatment are often fully realized within two to three days.

How Long Does it Take to Recover from RHA Fillers?

Recovery from RHA filler treatment is incredibly fast. While there is no downtime to speak of, redness and swelling around the injection site may be present for a few days. However, these things will naturally subside without interference, quickly revealing softer and more attractive skin.

You will not need to arrange for a ride to or from our office for RHA filler treatment, but you may want to take the rest of the day to relax. Taking it easy in the hours following treatment will give your body time to adjust and may help reduce swelling and prevent bruising.

What is the Difference Between RHA Fillers and Other HA Fillers?

There are two primary types of wrinkles: dynamic (evident with facial movement) and static (always present). Traditional fillers treat static wrinkles, such as parenthesis lines around the mouth, but are not always ideal for dynamic wrinkles like crow’s feet. By contrast, RHA fillers can treat both dynamic and static wrinkles, often for longer than their alternatives.

In addition, RHA fillers require less processing than traditional HA fillers, making them similar to the natural HA produced by our bodies. This can help RHA fillers adapt to natural facial movements and allow them to create both subtler and more comprehensive results.

*Clinical effectiveness and safety were demonstrated in 2 pivotal studies, each a 15-month, randomized, double-blinded, within-subject, multicenter, noninferiority, prospective trial. Study 1 (174 subjects): 74 RHA® 2/control treatment group, 74 RHA® 3/control treatment group, and 26 no-treatment group. Study 2 (140 subjects): 120 RHA® 4/control treatment group and 20 no-treatment group.

Duration based on blinded evaluator assessments at Month 15 in the 2 pivotal studies, the percentages of responders ( ≥ 1 grade improvement on the wrinkle severity rating scale) were 80.9% for RHA 2, 78.7% for RHA 3, and 89.2% for RHA 4.

As a dermal filler expert, Dr. Fitzgerald will guide you in the choice of filler you ultimately decide upon. Everyone has a unique facial “map” and facial muscle structure and movement. As a training physician for just about every dermal filler used, you can be assured you’ll get the right filler for your needs.

Preparing for a Successful Treatment

Please review these important guidelines before your dermal filler treatment

RHA Science & Safety

Extra FAQs

The goal of any filler treatment is to keep you looking completely natural…but better.

These fillers work well across all skin types, colors and patient ages.

RHA® 2 and RHA® 3 are indicated for injection into the mid-to-deep dermis for the correction of moderate to severe dynamic facial wrinkles and folds, such as nasolabial folds (NLF), in adults aged 22 years or older.

RHA® 4 is indicated for injection into the deep dermis to superficial subcutaneous tissue for the correction of moderate to severe dynamic facial wrinkles and folds, such as nasolabial folds (NLF), in adults aged 22 years or older.

Absolutely! Fillers become more sophisticated all the time.

Dr. Fitzgerald is an internationally respected dermal filler trainer. Precision, talent and wide-range experience of your physician is more important than the filler itself.