Korean Skin Boosters Explained: Rejuran, Juvelook, Skinvive and More

Quick answer: A Korean skin booster is an injectable treatment placed in small amounts into the skin to improve its quality rather than change facial shape. The main types are polynucleotide boosters such as Rejuran for repair and calm, collagen-stimulating boosters such as Juvelook for gradual firmness and texture, and hyaluronic acid boosters such as Skinvive for hydration and smoothness. Most are given as a short series, and results build gradually and vary between people.

What is a skin booster?

Skin boosters are injectables delivered as many tiny deposits into the dermis, the layer of skin that holds collagen and moisture. Unlike classic filler, which adds volume to lift a specific area, boosters aim for smoother texture, better hydration, a healthier glow and finer pores.

In Korea, boosters are often given by hand with fine needles or a cannula, or with an injector device that places many small droplets quickly. Numbing cream is usually applied first.

What are the main types of Korean skin boosters?

Polynucleotide (PN) boosters: Rejuran

Rejuran is made by the Korean company PharmaResearch and contains polynucleotides, DNA fragments purified from salmon. It is approved in Korea as an injectable for skin rejuvenation. PN is thought to support the skin's repair environment, and it is used for dull, tired, thin or sensitive skin and as recovery support after laser treatments.

A published expert review describes typical rejuvenation protocols of three sessions about four weeks apart. Small bumps at injection points for a day or two are common.

Collagen-stimulating boosters: Juvelook

Juvelook is made by the Korean company VAIM and combines poly-D,L-lactic acid (PDLLA) with a small amount of non-cross-linked hyaluronic acid. The hyaluronic acid gives an early, mild effect, while the PDLLA stimulates collagen over the following months. A higher-volume version, Juvelook Volume (also sold as Lenisna), uses larger particles placed deeper for hollows.

The manufacturer's materials describe a series of three treatments about one month apart, with gradual improvement in firmness, texture and fine scarring.

Hyaluronic acid boosters: Skinvive

Skinvive by Juvederm is a hyaluronic acid microdroplet injection made by Allergan Aesthetics. In 2023 the US FDA approved it to improve skin smoothness of the cheeks in adults aged 21 and older. It contains lidocaine for comfort. In the pivotal study, the effect lasted about six months with optimal treatment.

Other boosters you may see in Korea

Clinics may also offer other PN, PDRN, hyaluronic acid, poly-L-lactic acid or polydioxanone-based boosters under various brand names. Ingredients and evidence differ, so ask what is in the product, whether it is approved in Korea, and why it is recommended for your skin.

How do I choose the right skin booster?

• Dry, dull or dehydrated skin: a hyaluronic acid booster may give the quickest visible glow.
• Thin, sensitive or tired-looking skin, or after laser: a polynucleotide booster is often chosen for repair and calming.
• Fine lines, loss of firmness, mild acne scars or large pores: a collagen-stimulating booster may help gradually.
• Volume loss or deep hollows: boosters alone are usually not enough, and filler or a volumizing collagen stimulator may be discussed.

Many people combine boosters with energy-based treatments or with each other. Your doctor should explain the order and spacing.

What to expect during and after treatment

Treatment of the face usually takes 20 to 40 minutes after numbing. You may see small raised bumps at each injection point, mild redness, swelling and occasional bruising. Bumps from hyaluronic acid and PN boosters usually settle within a few days. Allergan reports that most side effects of Skinvive resolved within about seven days.

Avoid makeup, saunas, intense exercise and facial massage for the period your doctor advises, typically at least the first day. Use sunscreen daily.

How long do skin booster results last?

This depends on the product and your skin. Hyaluronic acid boosters gradually break down over months. Collagen-stimulating boosters work more slowly but may last longer after a full series. Most people return for maintenance every few months to once a year.

A booster is not a one-off fix. Consistent sunscreen, a gentle routine and treating problems such as acne or melasma alongside boosters all help the glow last longer.

What are the risks?

Common effects are temporary bumps, redness, swelling, bruising and tenderness. Less common risks include infection, lumps or nodules, allergic reactions and, with any injectable, injection into a blood vessel. See a doctor urgently if you notice increasing pain, skin turning white or dusky, vision changes or signs of infection after treatment.

Frequently asked questions

Are skin boosters the same as filler?

No. Boosters are placed superficially in small amounts to improve skin quality, while filler adds volume to change contour.

How many sessions do I need?

Many boosters are given as a series of two to three sessions spaced a few weeks apart, followed by maintenance. Your doctor will tailor the plan.

Can I get a skin booster on a short trip to Korea?

Yes, a single session is possible, but bumps may be visible for a few days and series-based products work best with follow-up sessions. Plan your schedule with your doctor.

Do skin boosters hurt?

There are many small injections, so most clinics use numbing cream. Some products also contain lidocaine.

This article is for general information and does not replace a consultation with a doctor. Results and suitability vary from person to person.

Sources: Dove Medical Press: Polynucleotides in aesthetic practice (review); Pharmacy Times: FDA approves Skinvive hyaluronic acid injection; PubMed Central: Juvelook for collagen stimulation and tear trough enhancement (case report)