
The skin around the eyes is the thinnest on the face, which makes wrinkles there hard to manage once they set in. Eye Thermage (RF), Rejuran Eye (PN) and Re2O (PDRN) all aim to regenerate the eye area, but they differ in how they work, how quickly results appear and how long they last. This Q&A compares the three and explains how to choose and how to prevent side effects.
Contents
- Why is it so difficult to treat eye wrinkles once they form?
- What is Eye Thermage?
- What is Rejuran Eye?
- What is Re2O?
- What are the differences between the three procedures?
- Specifically, what concerns should prompt consideration for eye wrinkle treatments?
- Which of the three treatments should I choose?
- What are the potential side effects after eye treatments, and why do they occur?
- How can side effects be prevented?
Q1. Why is it so difficult to treat eye wrinkles once they form?

The skin around the eyes is the thinnest on the entire face (about 0.5mm), and has a lower density of sebaceous glands, collagen, and elastin, making its natural regeneration and elasticity recovery abilities weaker than other areas. Furthermore, due to blinking thousands of times a day and the constant movement of facial muscles, continuous stimulation causes wrinkles to form again even if they are temporarily improved through procedures or skincare. Also, wrinkles in this area initially start as dynamic wrinkles (appearing only with facial expressions). However, if neglected, they quickly become fixed as static wrinkles etched into the skin regardless of expressions, reaching a stage where simple moisturizing or home care is no longer enough to improve them. Therefore, eye wrinkle management requires a fundamental and proactive approach to restore the skin’s collagen density and elasticity before the wrinkles set in, rather than just trying to “iron out” already established wrinkles.
Q2. What is Eye Thermage?

Eye Thermage is a non-invasive lifting procedure that delivers radiofrequency (RF) energy to the dermal layer around the eyes, causing immediate collagen contraction and subsequently inducing collagen regeneration. Without using needles, a tip is placed in contact with the skin’s surface to deliver heat energy. This produces two main results: an immediate tightening effect right after the procedure, and a gradually strengthening collagen regeneration effect over 8 to 12 weeks.
Q3. What is Rejuran Eye?

Rejuran Eye is a procedure that micro-injects PN (Polynucleotide) extracted from salmon into the skin around the eyes. The PN ingredient promotes the regeneration of damaged cells and tissues, aiming to improve the thickness, elasticity, and even the tone (dark circles) of the eye area. Rather than filling volume like a filler, it focuses on regenerating the skin tissue itself.
Q4. What is Re2O?

Re2O is a skin-booster procedure based on PDRN (Polydeoxyribonucleotide) ingredients. Its fine particles and low viscosity make it easy to spread evenly in thin and sensitive areas like the skin around the eyes. It helps with cell regeneration and tissue repair while causing relatively less swelling or bruising, resulting in a shorter recovery period.
Q5. What are the differences between the three procedures?
| Category | Eye Thermage | Rejuran Eye | Re2O |
|---|---|---|---|
| Mechanism | RF heat energy → immediate collagen contraction + induction of regeneration | PN injection → tissue regeneration, induction of collagen production | PDRN injection → cell regeneration, tissue repair |
| Onset of effect | Immediate tightening; regeneration strengthens after 8–12 weeks | Gradual improvement after 4–6 weeks | Relatively early, after 2–4 weeks |
| Strengths | Lifting effect when sagging is present; flexible treatment intervals | Restores skin thickness and elasticity; improves dark circles | Minimal swelling and bruising; short recovery; suited to delicate areas |
| Duration | Approx. 6 months to 1 year | Average 6 months to 1 year (cumulative with repeated treatments) | Approx. 4–6 months |
All three procedures share the goal of “eye area regeneration,” but they differ in whether they are heat-energy-based or injection-based, as well as the speed of visible results and their duration.
Q6. Specifically, what concerns should prompt consideration for eye wrinkle treatments?

- Under-eye areas and outer corners of the eyes where fine lines are particularly concentrated
- Under-eye areas experiencing a loss of elasticity accompanied by dark circles
- Tiny, thread-like wrinkles that appear as the skin thins
- Early to mid-stage wrinkles where dynamic (expression) lines are beginning to set into static wrinkles
If you have any of the concerns above, you can expect effective improvement through eye wrinkle treatments.
Q7. Which of the three treatments should I choose?
Rather than simply asking “which is better,” the choice depends on the cause and severity of the wrinkles, as well as how quickly you want to see results. If you have both sagging and loss of elasticity around the eyes, the lifting effect of Eye Thermage is recommended. If the skin itself is thinning and accompanied by dark circles, the regenerative effect of Rejuran Eye is ideal. If you prefer quick results with a short recovery time, Re2O is a great option. In actual clinical practice, it is common to combine or sequentially perform these three procedures to achieve complementary effects. For the most accurate choice, a consultation and skin diagnosis with a medical professional is absolutely necessary.
Q8. What are the potential side effects after eye treatments, and why do they occur?
With Eye Thermage, temporary erythema (redness) or burns can occur if the energy intensity is inappropriate or if the tip is not fully in contact with the skin. For injection-based treatments like Rejuran Eye and Re2O, there is a risk of significant bruising and swelling if the injection depth is incorrect or if the thin blood vessels around the eyes are affected. Additionally, nodules may form if the injected substance is concentrated in one specific area.
Q9. How can side effects be prevented?
[Criteria for Choosing a Good Clinic]
- Medical professionals with a precise understanding of the anatomical structure (blood vessels, nerve distribution) around the eyes.
- A clinic that adjusts the energy intensity and injection depth according to the individual’s skin thickness.
- A clinic that provides detailed instructions on pre- and post-treatment care.
[Preventive Measures You Can Take]
- Alleviate swelling and bruising by applying a cold compress immediately after the procedure.
- Avoid excessively rubbing or applying pressure to the treated area with your hands.
- Refrain from high-intensity workouts, saunas, and alcohol consumption immediately following the treatment.
- Drink plenty of water to assist with tissue regeneration.