Sculptra vs Rejuran: What's the Difference and How to Choose?

If you're interested in improving facial volume loss or skin texture, you've likely come across the names Sculptra and Rejuran. Both are administered by injection, but they are known to differ in the ingredients used, how they work, and the timing of expected changes.

This article summarizes the principles and known characteristics of each procedure, downtime, and considerations for post-procedure care. Since results and perceived effects vary greatly by individual, please treat the following as reference information only, and be sure to consult a specialist at a medical institution before deciding on any specific procedure.

What Is Sculptra?

Sculptra is an injectable formulation composed of poly-L-lactic acid (PLLA) microparticles, described as a collagen biostimulator distinct from hyaluronic acid fillers that fill space immediately. It is said to work by having PLLA particles, once injected beneath the skin, trigger collagen production through the body's own response—though this explanation is largely based on clinic materials and should be referenced with caution.

More reliable regulatory and patent literature describes Sculptra not as a true filler, but as a dermal stimulator that induces gradual change over time by stimulating collagen production. Sculptra has in fact received FDA approval in the United States for treating facial lipoatrophy related to HIV, and it is reportedly used off-label in dermatology for improving areas of dermal deficiency.

What Is Rejuran?

Rejuran is widely known as a skin-booster type procedure based on polynucleotide (PN) ingredients extracted from salmon. It is described as working by injecting the ingredient into the dermal layer to help improve the skin's own condition, and is often categorized as a treatment focused on overall skin quality—such as texture and elasticity—rather than volume.

It should be noted that the materials referenced in this article are primarily clinical and regulatory literature focused on Sculptra, while the explanation of Rejuran reflects generally known concepts. Specific clinical data and the scope of effects for Rejuran may be described differently depending on the clinic, product, and practitioner, so it's advisable to confirm details during consultation.

Differences in Mechanism and Expected Effects

Sculptra is described as a procedure aimed at achieving volumizing change by stimulating collagen production, and has been reported to be used for improving facial lipoatrophy or sunken areas. However, this is based on small-scale, post-marketing observational studies, and it appears that not all recipients experience the same results.

Rejuran is often mentioned as a procedure that emphasizes improving surface-level skin condition, such as texture and elasticity, and is known to be chosen more for managing the skin's own condition rather than for volume enhancement.

Since the two procedures aim for different kinds of change, rather than making a simple comparison, it's necessary to consult a specialist and determine a treatment direction based on your own skin concerns and goals. Some plan both procedures together, but whether to combine them and in what order also depends on individual skin condition, making a specialist's judgment important.

Recovery Course and Downtime

According to Cleveland Clinic materials, patients can generally return to daily activities relatively quickly after Sculptra treatment, but because the collagen production process occurs gradually, it may take roughly 4 to 6 weeks for noticeable changes to appear. This timeframe and the final degree of change can vary depending on individual skin condition, treatment area, number of sessions and volume used, and the practitioner's skill level.

Rejuran is also known to potentially cause temporary swelling, redness, or minor marks immediately after the procedure, and the time for these reactions to subside varies by individual. For both procedures, the skin barrier may become temporarily sensitive right after treatment, and it's noted that how irritation is managed during this period can affect subsequent recovery.

Post-Procedure Recovery and Home Care

Given the nature of injection-based procedures, mild redness, swelling, or temporary sensitivity may accompany the treatment immediately afterward. During this period, sun protection, avoiding excessive friction or pressure, and using skincare with minimal irritants are generally recommended.

It's generally advised to avoid rubbing the treated area excessively or prolonged exposure to high-heat environments (such as saunas or hot baths), and following the specific care instructions provided by the treating medical institution is the most accurate approach.

Why Consulting a Specialist Matters

Sculptra and Rejuran differ in the ingredients used, their mechanisms of action, and the direction of change they can be expected to bring. Which procedure is more suitable for you, whether they can be combined, and how to set the number of sessions and intervals all depend on your skin condition and goals, so please be sure to make decisions only after thorough consultation with a specialist at a medical institution. This article is intended for general informational purposes and does not recommend any specific procedure or guarantee its effects.

Post-Procedure Recovery Depends on Home Care

Immediately after injection procedures like Sculptra or Rejuran, the skin barrier may become temporarily sensitive and feel tight, so care that minimizes irritation while maintaining hydration can be helpful. AbyZoo Cream is designed as a 2-step regimen with post-procedure home care in mind: immediately after treatment, STEP 1 Ultra Cera-Rich focuses on soothing and barrier care, and during the subsequent recovery period, STEP 2 Hydro Re-Boosting continues with deep hydration care. However, the cream does not replace the procedure itself or guarantee results, and it's best to consult with your medical provider about when it's appropriate to start use based on the condition of the treated area.

Medically reviewed by 아비쥬의원 의료진. (September 10, 2026)