Revance RHA Dermal Fillers Collection

RHA Fillers in Northern California

About Revance RHA Fillers in Santa Rosa

RHA fillers fill lines and wrinkles while moving with your natural facial expressions.

Age may just be a number—but for most, it means a gradual loss of facial volume and noticing creases and hollows replacing what were once smooth, supple contours. For decades, we have safely and effectively restored facial volume with dermal fillers to slow the aging process and achieve a more refreshed—yet completely natural—appearance in Santa Rosa.

Most dermal fillers, such as Juvéderm® and Restylane®, are composed of a synthetic form of hyaluronic acid, or HA, which also occurs naturally in the body. The latest in dermal filler innovation in Santa Rosa features a “cleaner” form of HA called Resilient Hyaluronic Acid, or RHA®. RHA filler achieves a more natural look by integrating into the surrounding tissue as it fills lines and wrinkles while moving with your natural facial expressions.

filler at a med spa in northern california

The RHA Collection of fillers

RHA was developed by a Swiss company, TEOXANE, in 2003 and Madame Valerie Taupin, Juvéderm co-creator, is behind the creation of the RHA collection. Since then, aesthetic experts outside of the US have been using RHA to achieve long-lasting, remarkably natural results.

The RHA collection in Santa Rosa features 3 different specialized formulas to treat specific areas of the face:

  • RHA 2 is a highly flexible formulation ideal for lip augmentation and addressing moderate lines and wrinkles including smile lines (radial cheek lines), frown lines, crow’s feet, and folds in the midface and around the nose and mouth (nasolabial folds).
  • RHA 3 is designed for moderate creases and wrinkles in nasolabial folds and the corners of the mouth. This formula can also be used to smooth the cheeks and add volume to the midface and lips.
  • RHA 4 is best for treating the deepest folds and lines through the lower face and jawline. This formula can also be injected into the cheek area to add a volumized, higher cheekbone contour.

For increased comfort, the RHA collection contains lidocaine (a local anesthetic); we also apply a topical numbing cream to minimize discomfort at our office in Santa Rosa, California.

What to Expect

Here’s what to expect when receiving RHA fillers in Northern California.

After your treatment

After RHA filler injections, you can return to your day—however, you may wish to plan for social downtime until minor temporary side effects have resolved; your timeframe will depend on what is being treated, so talk to your injector about what to expect. For the next 24 hours, we ask that you avoid touching your face and postpone strenuous exercise.

Side effects

The injection sites will appear slightly red and swollen, but this often goes away after several hours. Bruising can appear, but this can usually be concealed with makeup.


Most patients will experience some improvements immediately after RHA injections, but it often takes 1–2 weeks before the results are final. Many patients enjoy pleasing results for up to 15 months.


During your appointment, we will recommend a time frame for returning for follow-up treatments at Allegro MedSpa.

Before & After

Woman getting RHA fillers at med spa in Santa Rosa

What makes the new RHA fillers different from other HA fillers?

RHA dermal fillers are the first FDA-approved filler to treat dynamic facial wrinkles—wrinkles that are formed by repeated muscle movements (facial expressions). Previously, HA dermal fillers were only FDA approved to address volume loss; augment, or fill specific areas (like your lips and cheeks); and treat static wrinkles (wrinkles that remain when your face is expressionless). These more flexible, resilient fillers are specially formulated to smooth lines and wrinkles while also stretching to accommodate your facial expressions. In short, RHA fillers treat static and dynamic wrinkles, add youthful volume, and offer augmentative benefits.

Additionally, one of the most notable differences between RHA fillers and HA fillers is the quality of the synthetic HA created in the manufacturing process. Traditional HA dermal fillers are engineered with a high degree of chemical processing. RHA is developed using a more refined process with a limited amount of chemical modifications. This results in longer chains of HA which better mimic the natural HA that is produced in the body.

Young woman getting Revance RHA filler injections in lips at Santa Rosa med spa

What are the benefits of RHA fillers?

According to this study in the Journal of Cosmetic Dermatology, patients injected with RHA fillers saw significant aesthetic improvements and reported a higher satisfaction rate compared to patients who received HA fillers. Additional benefits may include:

  • Less post-injection swelling—RHA consists of a more pure form of HA which may integrate better with your tissue and potentially reduce your body’s reaction to it.
  • Longer-lasting effects—RHA benefits can last up to 15 months (compared to 6-12 months for HA fillers).
  • More natural facial expressions—Dynamic lines and wrinkles are filled in without relaxing the muscle and limiting your expressions.
Woman getting cheek fillers at med spa

What are the side effects of RHA fillers?

Side effects of RHA fillers are similar to HA fillers and are typically short-lived and easily tolerated. The most common side effects include temporary:

  • Redness
  • Swelling
  • Bruising
  • Pain or tenderness
  • Itching or irritation
  • Lumps or firmness

Most patients report mild swelling at the injection site which usually resolves after a few days.

From Our Clients

“I had my lips done my Kelsey, and she was wonderful! She was very informative, professional, and very nice. I was a little nervous, and she went out of her way to make me feel comfortable. She did an amazing job!”

Happy Customer

Dermal Filler

 “JUVÉDERM® Ultra XC – This was the best filler appointment that I’ve had! This is the third time I’ve had filler (second at this location) and the dental block made the world of a difference!!”



“JUVÉDERM® Ultra XC – Jodie is the best. She is extremely gentle and she takes her time with the process.Currently building to get the result I desire”


Juvederm Ultra XC

“Restylane® – Corrin is great, very gentle, I had the least amount of bruising I have ever had. She noticed and knew exactly what to do to remedy a minor Botox issue. Minimal pain with only topical numbing. Corrin was very good at injections and Where she placed them”



“Restylane® – Staff is very knowledgeable and friendly. Procedure was done very well without much discomfort.”



“Restylane® – The results were what I expected. Looked great after bruising was gone. The staff was all beautiful, friendly, and professional. I loved this spa.”



“JUVÉDERM® Ultra XC – Melinda is amazing!!! She really takes the time to explain everything. Makes you feel comfortable! The best!”


Juvederm Ultra XC

“JUVÉDERM® Ultra XC – Deanna was amazing! She is highly skillful and made me feel completely at ease. She is incredibly informative and is clearly excellent at what she does. I couldn’t be more pleased. Thank you for the best experience I could have asked for!Results were exactly what I hoped for.”


Juvederm Ultra XC

“JUVÉDERM® Ultra XC – Great all around. It was quick and easy and was less painful than the first time for great results.”


Juvederm Ultra XC

“JUVÉDERM® Ultra XC – Look better but not fake! I always love coming to the med spa as I find the staff very attentive and professional. The front office staff is friendly and accommodating to my needs.”


Juvederm Ultra XC

Related Procedures

Interested in additional ways to improve the way you look and feel? Check out our related procedures.

Learn more about your dermal filler options at Allegro MedSpa

Allegro MedSpa in Santa Rosa is led by board-certified plastic surgeons, Dr. Heather Furnas and Dr. Francisco Canales. Our safe, effective treatments are designed to achieve restorative, completely natural-looking results in a luxurious atmosphere. To learn more about your dermal filler options, we invite you to schedule your consultation online or call us at (707)-537-2123.

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