The three filler families you’ll be choosing between for lip filler in West Hollywood are Juvederm, Restylane, and RHA. All three are FDA-approved hyaluronic acid (HA) products, all three are reversible, all three are safe in skilled hands. What separates them is rheology — how the gel behaves in tissue — and that’s what determines whether you get a soft, kissable result or something that looks like a duck.
This isn’t a comparison written by a manufacturer. It’s a clinical breakdown of what each product actually does, who it’s right for, and what you should know before letting any of them anywhere near your face.
The HA filler basics
Hyaluronic acid is a sugar molecule your body already produces. It binds water — one gram of HA can hold up to a liter of water — which is why HA fillers create volume that looks and feels like natural tissue. When the manufacturer cross-links the HA into a gel, they tune three properties:
- G-prime (firmness): How much the gel resists deformation. High G-prime = structural lift. Low G-prime = soft, blendable volume.
- Cohesivity: How tightly the gel holds together. Higher cohesivity = sharper definition. Lower cohesivity = smooth integration with surrounding tissue.
- Hydrophilicity: How much water the gel pulls in over time. More hydrophilic products swell post-injection.
The lips are not a structural area. They’re a soft, mobile, sensory-rich tissue zone where you generally want low G-prime, moderate cohesivity, and predictable hydration. That eliminates a lot of products right out of the gate.
Juvederm Volbella, Vollure, Ultra XC
The Juvederm family is made by Allergan and uses Vycross technology — a specific cross-linking approach that produces smooth, cohesive gels.
Volbella is the lightest in the family, designed specifically for fine lines around the mouth and subtle lip enhancement. It hydrates the lips and adds a small amount of volume without changing the lip’s shape dramatically. Lasts up to 12 months. This is the right choice for patients who want their lips to look like better versions of themselves rather than visibly augmented lips.
Vollure is heavier, designed for moderate enhancement and the perioral lines (around the mouth, like marionette lines). In experienced hands it can be used in the lip body. Lasts up to 18 months.
Ultra XC is the original Juvederm lip filler. Adds noticeable volume and shape, lasts up to 12 months. This is the right product when a patient wants visibly fuller lips with definition at the border.
Vycross products are more hydrophilic than the average HA — they pull in water over the first 2 weeks, which is why your lips often look “bigger” two weeks after injection than they did when you left the office.
Restylane Kysse, Refyne, Defyne, Silk
Restylane (made by Galderma) uses XpresHAn Technology — a different cross-linking method that produces more flexible, stretchable gels.
Kysse is the lip-specific Restylane product. It’s flexible enough to move naturally when you smile or talk, which is the single most common complaint patients have about poorly-chosen lip filler: lips that look pillowy at rest but become stiff or distorted in motion. Kysse holds up well in dynamic tissue. Lasts up to 12 months.
Silk is the older lip product — softer, smoother, but with less staying power and less natural movement than Kysse. Silk is still excellent for hydrating the lips and softening fine perioral lines.
Refyne and Defyne are designed for moderate to severe nasolabial folds and marionette lines, not the lips themselves. Some skilled injectors use small amounts off-label around the mouth.
Restylane products are less hydrophilic than Juvederm products — they swell less post-injection. What you see at day three is closer to what you’ll have at month one.
RHA 2, 3, 4
RHA stands for Resilient Hyaluronic Acid — the newest filler family on the market, made by Revance and approved by the FDA in 2020. The cross-linking is engineered to preserve more of the HA’s natural structure, producing fillers that integrate exceptionally well into dynamic tissue.
RHA 2 is the lightest, best suited for fine perioral lines and very subtle lip enhancement.
RHA 3 is the middle weight, used for the lip body and moderate volume restoration. Many West Hollywood injectors consider RHA 3 the current best-in-class for natural-looking lip enhancement that moves well with expression.
RHA 4 is heavier — typically used for cheeks and deep folds, not lips, though small amounts can be used for lip definition in select patients.
RHA products are the most expensive of the three families ($800–$1,200 per syringe is typical in WeHo). The premium reflects newer technology and tighter clinical performance in dynamic areas like the lips and lower face.
Which is right for you?
The honest answer is that it depends on your lip anatomy at baseline, what you want the result to look like, and how your tissue responds to specific products. A few general patterns hold:
- First-time patient who wants subtle hydration: Volbella or Restylane Silk. Half-syringe is often enough.
- First-time patient who wants visible but natural enhancement: Restylane Kysse or RHA 3. Typically a full syringe.
- Patient who wants more visible volume and defined border: Juvederm Ultra XC or RHA 3 with careful border work.
- Patient with thin, deflated lips and pronounced lipstick lines: Combination approach — Volbella or RHA 2 in the lines, Kysse or RHA 3 in the body.
- Patient correcting prior over-filling: Hyaluronidase (an enzyme that dissolves HA) first, then a fresh approach with the right product.
What good lip filler looks like
The goal of good lip filler is that nobody can tell you’ve had it. People should notice that you look great, not that your lips look done. That means:
- The lips look balanced in proportion to the rest of your face.
- The upper-to-lower lip ratio sits between 1:1 and 1:1.6 (the natural range; lower lip slightly fuller than upper).
- The Cupid’s bow remains defined, not obliterated.
- The lips move naturally when you smile, talk, or pucker — no stiffness, no “duck” projection.
- The border is crisp without being sharp or overhanging.
If you look at a result and your eye goes straight to the lips, the work isn’t right. Good lip filler makes the whole face look better; bad lip filler pulls focus.
How Dr Refresh approaches lip filler
At Dr Refresh Med Spa in West Hollywood, lip filler appointments start with a real assessment: looking at your lips in three dimensions, evaluating your perioral muscles in motion, and matching the product family to your specific anatomy. Under Dr. Edmund Fisher’s direction, the practice stocks Juvederm, Restylane, and RHA so the product is chosen for the patient — not the patient pushed toward whatever the practice happens to have in the drawer.
Pricing typically lands at $750–$1,100 per syringe depending on product, and most first-time patients are advised to start with a half-syringe to assess response before committing to a full one. See full filler services or call (323) 530-2879.
Frequently asked questions
How long does lip filler last?
Most HA lip fillers last 9–12 months. Patients with high metabolic rates, very expressive lips, or who consume a lot of activity (running, talking professionally) may metabolize faster. Patients on a regular cycle often find subsequent treatments last slightly longer as the tissue acclimates.
Does lip filler hurt?
Most lip fillers come premixed with lidocaine, and topical numbing is applied before injection. The first injection is the sharpest sensation; subsequent placements are well-tolerated. Patients describe discomfort at 3–4 out of 10.
How much swelling should I expect?
Significant swelling for 24–48 hours, residual swelling for up to 2 weeks. Plan around this — do not get lip filler 3 days before a wedding or photo shoot. Two to three weeks of buffer is the right rule.
Can lip filler be dissolved?
Yes. Hyaluronidase is an enzyme that breaks down HA in the tissue. It works within 24–48 hours and is fully reversible. This is one of the major safety advantages of HA fillers over permanent options.
What’s the difference between $400 lip filler and $1,100 lip filler?
Usually the product family, the syringe size, and the injector’s experience level. Heavily discounted lip filler is sometimes diluted product or older inventory. As with most cosmetic procedures, the variable that matters most is the injector — pay more for the right hands.
Book a lip filler consultation at Dr Refresh in West Hollywood.
