Rejuran Under-Eye Treatment: Benefits and Risks

The skin under the eyes is among the thinnest on the body, and it often shows the first signs of fatigue and ageing: fine lines, crepey texture and a slightly darker or shadowed look. In Korea, polynucleotide treatments such as Rejuran I and related Rejuran formulations are frequently used in this area to improve skin quality without adding volume.

This article explains the potential benefits of Rejuran under the eyes, what it cannot do, how treatment is performed and the risks to understand before booking.

Why the under-eye area is challenging

Under-eye concerns usually have several causes at once. Thin skin can make underlying blood vessels and muscle show through, creating a bluish or purple tone. Loss of fat and bone support can create hollows or a tear trough. Fat pads can protrude and form bags. Pigmentation can cause brown circles, and repeated movement and sun damage create fine lines.

Rejuran mainly addresses one part of this picture: the quality of the skin itself. Understanding which cause is dominant for you is the key to choosing the right treatment.

What Rejuran is used for under the eyes

Rejuran I is a formulation designed for the delicate eye area. Like other Rejuran products, it contains polynucleotides derived from purified salmon DNA, which are thought to support skin repair, fibroblast activity and hydration. Potential benefits include:

• Thicker-looking, more resilient skin: improving skin quality may reduce how much underlying vessels show through.
• Softer fine lines and crepiness: superficial wrinkles may become less noticeable over a course.
• Improved hydration and texture: the area may look smoother and less tired.
• A subtle brightening effect: some patients notice that dark circles linked to thin skin look less pronounced.

What Rejuran cannot do

It is important to set realistic expectations. Rejuran is not a filler and does not replace volume. It will not significantly correct deep tear troughs or hollows, remove protruding under-eye fat bags or lift sagging lids. Dark circles caused mainly by pigmentation may respond better to lasers or topical treatment, and structural problems may need filler, fat repositioning or surgery. In some cases, a combined approach is recommended, with Rejuran used to improve the skin over the top of other treatments.

How the treatment is performed

After a consultation and cleansing, numbing cream is applied, though the under-eye area is often more sensitive than the cheeks. The doctor then injects small amounts of product superficially using a fine needle, sometimes with a cannula to reduce the number of entry points and the risk of bruising. The procedure itself is typically short, around 10 to 20 minutes for both sides.

Because the skin is thin and the area is close to the eye, technique matters. Experience with under-eye anatomy helps the doctor place the product at the right depth and avoid unevenness.

Who is a good candidate

The best candidates are usually adults whose main concern is the quality of the under-eye skin rather than its shape. This includes people with fine lines, crepey or wrinkled texture, thin skin through which vessels are visible, and a generally tired look without major hollows or bags. It may also suit people who are hesitant about under-eye filler and prefer a gentler first step, or those who have had filler and want to improve the skin over it.

People with pronounced eye bags, deep tear troughs or significant excess eyelid skin are less likely to be satisfied with Rejuran alone. For them, an honest consultation that explains the alternatives, including the option of seeing an oculoplastic or plastic surgeon, is more valuable than repeated booster sessions. A doctor should also check for medical causes of puffiness, such as allergies, thyroid problems or fluid retention, where these seem relevant.

Recovery and aftercare

Small bumps, mild swelling and redness are common and usually settle within one to three days. Bruising is more likely under the eyes than elsewhere because of the many small blood vessels, and a bruise can occasionally take a week or more to fade completely.

• Avoid rubbing your eyes or pressing on the area for at least a day.
• Sleep with your head slightly elevated on the first night if swelling is a concern.
• Avoid alcohol, saunas and strenuous exercise for a day or two.
• Delay eye makeup until the next day, or as your doctor advises.
• Use sunscreen and sunglasses outdoors.

Risks and side effects

Rejuran is generally considered well tolerated, but under-eye injections carry specific considerations:

• Bruising and swelling: more common and more visible in this area.
• Lumps or unevenness: usually temporary, but superficial product can occasionally be palpable for longer.
• Infection: uncommon, but any injection carries this risk.
• Allergic reaction: rare, but people with fish or salmon allergy should avoid the product.
• Prolonged puffiness: some people with a tendency to fluid retention may notice swelling lasting longer.

Treatment is generally avoided during pregnancy and breastfeeding, with active infection around the eyes and in people with bleeding disorders unless cleared by a doctor. Let your doctor know if you take blood-thinning medication or supplements, as these increase bruising.

Sessions and planning in Korea

Under-eye Rejuran is usually performed as a series of sessions, often two to four treatments spaced a few weeks apart, followed by occasional maintenance. Because bruising is possible, visitors to Korea should schedule it early in their stay and keep a few days free before photographs or important meetings. Ask which formulation will be used and whether a needle or cannula technique is planned.

Conclusion

Rejuran under-eye treatment can gradually improve thin, crepey skin and fine lines, sometimes making shadows look softer, with limited downtime. It does not fill hollows or remove bags, so a careful diagnosis of what is causing your under-eye concerns is essential. In experienced hands and with realistic expectations, it can be a gentle way to refresh this delicate area.

This article is for general information only and is not a substitute for a medical consultation. Suitability, results and recovery vary from person to person.