RHA-4

Product Information:

RHA® 4 (Resilient Hyaluronic Acid 4) is a hyaluronic acid (HA) dermal filler designed to treat deep wrinkles and folds and to restore volume in areas of the face that experience a lot of movement.

• Made with resilient HA technology, which allows the filler to stretch and move naturally with facial expressions

• Part of the RHA Collection by Revance/Teoxane

• FDA-approved

• Intended for deep dermal and subcutaneous injection

Common treatment areas (by professionals):

• Deep nasolabial folds (smile lines)

• Cheeks (volume support)

• Jawline

• Chin

How it is used:

• RHA 4 is injected by a licensed, trained medical professional only

• It is placed deep in the skin or under the skin to provide structural support and volume

• Results are designed to look natural both at rest and during facial movement

Not for self-use. Injection technique, placement depth, and product selection require medical training.

Dosage:

• Supplied in pre-filled syringes (typically 1.2 mL)

• The exact amount used varies depending on:

  • Treatment area

  • Severity of volume loss

  • Facial anatomy

  • Professional judgment of the injector

There is no standard “dose” for individuals—only a qualified provider can determine this safely.

Warnings:

• Approved for adults only (typically 22 years and older)

• Should not be used if you:

  • Have severe allergies or a history of anaphylaxis

  • Are allergic to hyaluronic acid or lidocaine (if included)

  • Have active skin infections or inflammation at the injection site

• Injections into blood vessels can cause serious complications (which is why professional administration is critical)

• Not recommended during pregnancy or breastfeeding

Side effects:

Most are temporary and mild to moderate, occurring at the injection site:

Common:

• Redness

• Swelling

• Bruising

• Tenderness or pain

• Firmness or lumps