Rejuran Korea before and after results depend on the concern being treated: pores, rough texture and thin skin usually show the clearest change, while marked jowls and lost volume call for other treatments. Rejuran is a polynucleotide (PN) skin booster from Pharma Research, injected as many tiny points per session across a course spaced about 7 to 10 days apart. In a small 2015 case series, women in their thirties improved mainly in pores and skin thickness, while those in their forties improved more in tone, wrinkles and mild sagging. A fair after photo therefore shows a finer, denser surface rather than a new face shape. Below, concerns are sorted by what tends to change, what the evidence covers and how to judge photos of younger skin.
Guide
Which concerns tend to show up in an after photo
PN works on skin quality, so the visible change sits in the surface and feel of the skin, not in contour. The table sorts common reasons for booking by what an honest photo pair might and might not show.
| Concern | What an after photo may show | What it will not show |
|---|---|---|
| Enlarged pores | Pores a little less obvious under side light | Pores that have closed |
| Rough or uneven texture | A smoother surface where foundation sits evenly | Removal of raised scars |
| Thin, crepey skin | Finer crinkling and a denser look | A lifted jawline |
| Fine lines near the eyes | Softer fine lines | Change in deep folds |
| Shallow acne scars | Gradual softening over a longer course | Completely flat skin |
| Redness-prone cheeks | Calmer-looking skin in some reports | Treatment of rosacea itself |
Guide
Thirties versus forties in a five-patient series
One early report gives a hint of how age shapes the result. Park and colleagues, writing in Dermatologic Therapy in 2015, treated five Korean women four times at two-week intervals, placing about 0.05 mL of long-chain PN filler at 40 points on one cheek.
Pores and skin thickness improved markedly in the patients in their thirties. In those in their forties, tone, pigment, wrinkles and sagging improved more noticeably. No serious side effects were reported.
Five people, one cheek and no control group make this a signal, not proof. For someone under thirty, it suggests pores and skin density are the parts most likely to change, and only modestly.
Guide
Scars, sensitive skin and deeper placement in the expert view
A 2026 expert opinion article in Clinical, Cosmetic and Investigational Dermatology, led by Rho and colleagues, gathered an international panel of aesthetic physicians to describe how Rejuran is used. The panel grouped its uses into four areas: hydration and rejuvenation, structural support through deeper injections, barrier repair in rosacea and eczema, and scar remodeling, each with suggested protocols.
The authors described a favorable safety profile, with no reported cases of granuloma or vascular occlusion in the literature so far, but stated that the evidence base remains limited. Several authors advise or work for the manufacturer, so scar and redness photos deserve a cautious reading.
Guide
Judging a photo pair when the skin is already young
Younger skin has few flaws to begin with, so a dramatic pair more likely reflects the setup than the injections.
- Light from the side, at the same angle in both shots, shows texture; flat front light hides it.
- Both images should be bare-faced, with no filter, beauty mode or retouching.
- The after shot belongs weeks after the last session, not the morning after, when swelling can mimic plumpness.
- A laser or peel done in the same course makes it impossible to credit the change to PN alone.
- The product line and number of sessions should be stated next to the pair.
Guide
What the mirror shows during the first days
Before any improvement, the skin looks worse. Raised bumps mark each injection point and usually settle within a day or two, while redness, mild swelling and small bruises can last up to about a week.
Lasting lumps, spreading redness or signs of infection are uncommon and need the treating doctor's review. Pregnancy, an active skin infection on the face or a bleeding disorder are usual reasons to wait. Results vary from person to person.
Evidence
Research behind this page
- Expert Perspectives: Evidence-Based Applications of Polynucleotides (PNs) in Aesthetic Medicine and DermatologyClinical, Cosmetic and Investigational Dermatology · 2026 · doi:10.2147/ccid.s557226
Expert opinion article describing PN use across four indications with suggested protocols, reporting a favorable safety profile while noting the evidence base remains limited.
- Long-chain polynucleotide filler for skin rejuvenation: efficacy and complications in five patientsDermatologic Therapy · 2015 · doi:10.1111/dth.12299
Five women given four PN filler sessions two weeks apart showed improved pores and thickness in their thirties and improved tone, wrinkles and sagging in their forties, without serious side effects.
FAQ
Questions about Skin boosters in Hongdae
Why do my after photos look almost the same as my before photos?
Subtle change is the usual result in young skin, and camera conditions can hide it completely. PN improves texture and density step by step rather than reshaping the face. Retake both sets with the same side light, distance and bare skin, several weeks after the last visit. Touch and makeup application often reveal a difference that a front-lit phone photo misses.
Is a picture taken after a combined laser and PN course a fair Rejuran result?
Not on its own, because two treatments acting on the same skin cannot be separated in one image. Combined courses are common, and the laser may account for much of the change in tone or marks. Ask whether the clinic has pairs from PN-only courses, or treat a combined pair as evidence for the whole plan rather than for the injections.
Can Rejuran stand in for filler on hollow cheeks?
Usually not, because a skin booster improves quality rather than replacing lost volume. A routine PN course will not fill a hollow or change the outline of the cheek. The expert panel described deeper placement for structural support, but that is a separate technique planned case by case. Ask the doctor directly which concern each product is meant to address.
Do pores look smaller right after the injections?
They can seem smaller for a day or two, but that is swelling, not the result. Fluid around the injection points briefly tightens the surface and can make texture look smoother than it is. The change that lasts builds over the course, as the skin becomes denser. Judge pores in a photo taken weeks later, using the same light as your baseline shot.
Do redness-prone cheeks look calmer after a PN course?
Some people report calmer-looking skin, but the support comes mainly from expert opinion rather than controlled trials. The 2026 panel described barrier-repair protocols in people with rosacea and eczema, but a diagnosed condition stays with your own doctor rather than a cosmetic booking. A flare at the time of booking is a reason to wait. Mention any history of rosacea at the consultation.
Why do study results look stronger than what I see in the mirror?
Studies measure with imaging devices and scoring scales that pick up changes the eye may miss. Many participants were also older, with more room to improve. In the 2015 case series, the visible gains in tone and wrinkles came from patients in their forties. Expect a smaller, quieter change if your skin is already in good condition, and judge it against your own baseline.