RHA (Resilient Hyaluronic Acid) fillers are designed to move with your natural facial expressions—so you look smooth and refreshed, not “filled.” At Osman Dermatology, board-certified dermatologist Lawrence Osman, MD tailors RHA formulas for lips, smile lines, and other dynamic areas.
What Are RHA Fillers?
RHA fillers are a family of hyaluronic acid (HA) injectables formulated to be more “resilient,” meaning they adapt to
facial movement in high-expression areas. The result is soft, natural volume at rest—and a believable look when you smile,
speak, or laugh. Compare with our Botox treatments for dynamic wrinkle reduction.
- Natural-looking motion: Designed for dynamic areas like lips, smile lines, and marionette lines.
- Versatile options: Multiple RHA® strengths allow subtle refinement or deeper support where needed.
- Hyaluronic acid base: HA is a water-loving molecule found in skin; results are reversible if ever needed.
Why Patients Choose RHA at Osman Dermatology
- Natural expression: Fillers that move with you—great for animated talkers and big smiles.
- Physician-performed: Dr. Osman personally maps injection points for balance and symmetry.
- Customized plans: RHA is matched to your skin, lines, and goals—no cookie-cutter dosing.
- Convenient care: Quick visits in Northridge and Calabasas, serving Los Angeles & the San Fernando Valley.
What RHA Can Treat
- Smile lines (nasolabial folds)
- Marionette lines & corners of the mouth
- Lip volume & lip lines
- Cheek contour & midface support
- Chin & jawline refinement (selected candidates)
- Fine expression lines around the mouth & nose
How RHA Compares
- Versus traditional HA: RHA is engineered to be more flexible in motion-heavy zones.
- Versus collagen stimulators: Immediate results with built-in softness; not a slow builder.
- Pairing with Botox: Works beautifully together – Botox softens movement; RHA replaces lost volume.
What to Expect
- Consultation: Review goals, facial animation, and prior filler history.
- Mapping: Mark precise points to restore balance and support.
- Treatment: Targeted injections; optional numbing for comfort.
- Refinement: Gentle molding to ensure smooth, even contours.
Results & Longevity
- Immediate improvement—final settling in 1–2 weeks.
- Typical longevity 9–15 months depending on area, product selection, and metabolism.
- Maintenance touch-ups help keep results consistent and natural over time.
Safety & Side Effects
Hyaluronic acid fillers have a strong safety profile when injected by an experienced, board-certified dermatologist.
- Common: Temporary redness, swelling, tenderness, or small bruises at injection sites.
- Less common: Lumps or asymmetry—usually correctable with massage or adjustment.
- Rare but serious: Vascular events. We use careful technique and anatomy-guided mapping to minimize risk.
- Reversible: HA fillers can be dissolved with hyaluronidase if needed.
Aftercare Tips
- Expect mild swelling for 24–72 hours (lips may swell a bit longer).
- Avoid strenuous exercise, saunas, and alcohol the first day.
- No heavy pressure or facial massage for 48 hours unless instructed.
- Use cold compresses in short intervals if needed for comfort.
Cost & Treatment Planning
Pricing depends on areas treated and the amount/type of RHA used. During your consultation, you’ll receive a personalized plan and exact quote. Many patients choose a single-syringe starter plan for subtle refinement, then add syringes as needed to complete the look or maintain results over time.
Frequently Asked Questions
How is RHA different from other HA fillers?
RHA is designed to be more flexible, so it adapts to facial movement better in high-expression areas. That helps results
look natural when you talk, smile, or laugh. Compare with Botox treatments if you’re focused on motion lines.
How long do RHA fillers last?
Most patients enjoy results for 9–15 months, depending on the area, product used, and individual metabolism. For longer-lasting wrinkle relaxers, see Daxxify.
When will I see results?
Right away. Minor swelling settles over the first few days, with a polished look by about 1–2 weeks. For targeted lip shaping, explore our lip filler options.
Will I look “overfilled”?
No. Our approach prioritizes natural balance and proportion. We start conservatively and fine-tune as needed. Consider pairing with skin tightening treatments for full facial rejuvenation.
Can RHA be combined with Botox®?
Yes—this is a common and effective combo. Botox softens movement; RHA restores volume and smooths lines.
Is it reversible?
Yes. Because RHA is a hyaluronic-acid filler, it can be dissolved with hyaluronidase if a correction is ever needed. Learn more from the official RHA® Collection website.
Ready for Soft, Natural-Moving Volume?
Book your RHA filler consultation with Dr. Lawrence Osman in Northridge or
Calabasas. Call 818-885-0455 or request an appointment online.





