If you are considering a dermal filler treatment to add volume, smooth wrinkles, or contour certain areas of your face, you may have heard of RHA (resorbable hyaluronic acid) fillers. These popular injectables can give you aesthetic results that look and feel natural. But with several different formulations now available, how do you know which RHA filler is right for you? Here is an overview of the types and key benefits of RHA fillers to help you make the most informed decision.

RHA2 and RHA3

The main classifications of RHA fillers are RHA2 and RHA3. These names refer to the cross-linking process used to create different formulations. RHA2 fillers contain moderate levels of cross-linked hyaluronic acid and typically last 6 to 12 months. If you are new to aesthetic injections or only want subtle improvements, an RHA2 dermal filler may suit you well.

RHA3 fillers have a higher degree of cross-linked hyaluronic acid. This allows them to provide more volume and lift while still feeling soft and flexible. RHA3 injectables also have greater longevity, often over a year from the injection date. Since results continue looking smooth for so long after treatment, RHA3 fillers appeal to those who want fewer touch-ups.

RHA4

The newest classification of RHA filler is RHA4, engineered specifically for lasting deep injections. RHA4 uses advanced cross-linking technology to avoid common aesthetic complications like product migration or unevenness. Early clinical studies report up to 18 months duration for wrinkle correction and volume restoration from RHA4 dermal fillers. This type will interest patients who want incredibly durable yet reversible augmentations.

Additional RHA Filler Types

Beyond the main RHA classifications, several manufacturers offer specialty filler formulations. These include products designed specifically to augment lips, lift sagging skin, or replace lost volume in hands and décolletage. Others contain lidocaine for a more comfortable injection experience. Your provider can recommend the optimal RHA filler for the improvements you wish to achieve.

With an array of RHA fillers now available, you are sure to find one suitable for your cosmetic goals and preferences. To see which option is right for you, contact board-certified facial plastic surgeon Regina Rosenthal, MD, FACS in Los Gatos, CA, by calling (408) 559-4700 to schedule a consultation.