Rejuran Eye (Rejuran i) for Dark Circles and Crepey Under-Eyes

Rejuran Eye, also called Rejuran i, is a version of the polynucleotide (PN) skin booster designed for the thin, delicate skin under the eyes. It can help improve crepey texture, fine lines and the thin, tired look of the lower eyelid by supporting skin repair and thickness over a series of sessions. It can also make some dark circles look softer, particularly those caused by thin skin that lets underlying blood vessels show through. However, it does not remove pigmentation-related dark circles, fill deep hollows or eliminate eye bags, so whether it helps depends on what is causing your under-eye concerns.

This guide explains the different causes of dark circles, where Rejuran i fits in, what treatment and recovery are like, and how it compares with other options.

Understanding What Causes Dark Circles

"Dark circles" is a broad term that covers several different problems, and often more than one is present at the same time. The main causes are:

• Thin skin and visible vessels: under-eye skin is among the thinnest on the body. When it thins further with age, blood vessels and muscle beneath can show through as a bluish or purplish tone.
• Pigmentation: extra melanin in the skin causes a brown tone. This is common in people with medium to deeper skin tones and can be genetic or worsened by sun, rubbing or eczema.
• Shadows from hollows: a groove between the lower eyelid and cheek (the tear trough) casts a shadow that looks dark, especially under overhead lighting.
• Puffiness and eye bags: fat pads that bulge forward create a shadow beneath them.
• Lifestyle factors: lack of sleep, allergies, dehydration and rubbing the eyes can make any of the above look worse.

Identifying which of these applies to you is the most important step, because each responds to different treatments.

How Rejuran i Works Under the Eyes

Rejuran i contains polynucleotides, purified DNA fragments taken from salmon. They are thought to support the skin's repair processes, encourage collagen production and improve hydration. In the under-eye area, the aim is to make thin skin a little thicker and more resilient over time.

This can help in a few ways:

• Thicker skin may hide underlying blood vessels better, softening a bluish or purple tone.
• Improved collagen and hydration may reduce crepey, crinkled texture and fine lines.
• Skin may look smoother and less tired overall.

The product is formulated with a lower concentration than standard Rejuran Healer so that it suits the thin eyelid skin. Evidence specifically for the under-eye area is still limited and largely based on smaller studies and clinical experience, so expectations should be moderate.

Who Might Benefit Most

Rejuran i tends to suit people whose main concerns are:

• Crepey, finely wrinkled skin under the eyes
• Thin, translucent skin with a bluish or purplish tint
• Early signs of ageing around the eyes without significant volume loss
• A tired look that is mainly about skin quality rather than structure

It is less likely to help on its own if your dark circles are mainly caused by brown pigmentation, a deep tear trough hollow or prominent eye bags. These may need other treatments, sometimes combined with a skin booster.

What Treatment Involves

A typical session follows these steps:

1. Assessment: your doctor examines the under-eye area, ideally in different lighting, to judge the cause of your concerns.
2. Numbing: a numbing cream is applied, since the area is sensitive.
3. Injection: small amounts of product are placed in the under-eye skin using a fine needle or, in some cases, a cannula. The technique is gentle because the area has many blood vessels and very thin skin.
4. Aftercare: a cool compress may be used to reduce swelling.

The injection itself usually takes only a short time. Most plans involve a course of several sessions, often spaced a few weeks apart, with maintenance later if you are happy with the result.

Recovery and Possible Side Effects

The under-eye area tends to bruise and swell more easily than other parts of the face. Common effects include:

• Small raised bumps at injection points, usually settling within a day or two
• Mild swelling or puffiness, sometimes more noticeable the next morning
• Bruising, which can take a week or more to fade fully
• Tenderness or a tight feeling

Less common issues include lumps that persist, infection or allergic reaction. Mention any fish allergy, bleeding disorder or use of blood-thinning medicines or supplements to your doctor beforehand. Any change in vision, severe pain or skin colour changes after an under-eye injection should be assessed urgently.

For the first day or two, you will usually be advised to avoid eye makeup, rubbing your eyes, saunas, heavy exercise and alcohol.

Rejuran i Compared With Other Under-Eye Treatments

Because dark circles have different causes, Rejuran i is often one part of a broader plan. Here is how it compares with some common alternatives:

• Tear trough filler: adds volume to a hollow and can reduce shadows, but carries risks such as lumps or a bluish tint if placed too superficially. It does not improve crepey skin texture as such.
• Lasers and light treatments: may help pigmentation and some vascular darkness, and certain lasers can tighten skin.
• Topical skincare: retinoids, vitamin C and sunscreen can gradually help pigmentation and texture, though under-eye skin is sensitive and products should be chosen carefully.
• Surgery: lower eyelid surgery may be needed for significant eye bags or excess skin.

Some people combine Rejuran i with filler or lasers, but timing and order matter, so these combinations should be planned by your doctor.

Practical Notes for Visitors

Rejuran i is widely available in Korea and is often requested by visitors. Since bruising under the eyes can be visible for several days, try to schedule treatment early in your stay and avoid booking it right before photos, meetings or flights if you can. Ask for a record of the product used so future practitioners know what you have had.

Frequently asked questions

Will Rejuran i remove my dark circles completely?

Usually not. It can soften darkness linked to thin skin and improve texture, but pigmentation and hollows often need other treatments.

How many sessions are typical?

Many plans involve a course of a few sessions spaced several weeks apart, followed by occasional maintenance. Your doctor will tailor this.

Is Rejuran i safer than under-eye filler?

It carries different risks. It does not add volume, so lumps and the Tyndall effect are less of a concern, but bruising and swelling are common, and any injection near the eye needs skill.

Can I wear contact lenses afterwards?

Many people can, but avoid rubbing or pulling on the lower lid for a day or two and follow the advice you are given.

Get an Assessment First

Dark circles and crepey under-eyes have several possible causes, and the right treatment depends on which apply to you. A qualified dermatologist can examine the area, explain whether Rejuran i is likely to help, and suggest a safe plan that fits your goals and schedule.