Quick answer: Skin boosters are injectables that improve skin quality rather than shape. In Korea the three you will hear about most are Rejuran (polynucleotides, for repair and texture), Juvelook (a collagen stimulator for fine lines and mild volume loss) and Skinvive (micro-droplet hyaluronic acid, for hydration and smoothness). Which one suits you depends on whether your main concern is damage, thinning or dryness.
What skin boosters do, and what they do not
Skin boosters are injected as many small droplets into the dermis. They aim for brighter, smoother, more hydrated and more resilient skin. They do not lift sagging skin or add significant volume the way fillers do. Most people need a short series of sessions for the best result.
Rejuran: repair and texture
- What it is: polynucleotides (PN) from purified salmon DNA, made in Korea
- Best for: dull, sensitive or damaged skin, fine texture, pores, early acne scarring
- Course: three to four sessions two to four weeks apart
- Downtime: small bumps for one to three days; one of the more uncomfortable options
Juvelook: collagen stimulation
- What it is: PDLLA (poly-D,L-lactic acid) microspheres combined with hyaluronic acid
- Best for: fine lines, crepey skin, early thinning and acne scars; Juvelook Volume is a stronger version for mild volume loss
- Course: two to three sessions about four weeks apart; results build over two to three months and can last a year or more
- Downtime: mild swelling and small bumps for a few days
Skinvive: hydration and smoothness
- What it is: a micro-droplet hyaluronic acid injectable from the Juvéderm range, approved by the US FDA for improving cheek skin smoothness
- Best for: dry, dehydrated skin and a "glass skin" finish
- Course: often a single session, with results lasting around six months
- Downtime: small bumps and possible bruising for a day or two
How to choose
- Skin looks tired, reactive or damaged: start with Rejuran
- Fine lines and thinning are the main issue: consider Juvelook
- Skin feels dry and lacks glow: consider Skinvive
- More than one concern: doctors often combine them, or pair a booster with lasers
Planning a skin booster trip to Seoul
Because most boosters work best as a series, think about your timeline. If you are in Seoul for only a few days, one session of Skinvive or Rejuran can still give a visible improvement in hydration. For Juvelook or a full Rejuran course, plan to return or continue the course at home. Leave a day or two before photos or events for bumps to settle.
Safety
Side effects are usually limited to bruising, swelling and temporary bumps. Choose a doctor-led clinic, confirm the genuine product and avoid treatment during pregnancy, with active skin infection or with known allergies to the ingredients (including fish proteins for Rejuran).
Price
Each booster is priced per syringe and session, often with package discounts. Compare total course prices rather than single sessions. See our
price guide for current KRW ranges.
Frequently asked questions
Are skin boosters the same as fillers?
No. Fillers add volume and shape. Boosters are spread thinly to improve skin quality.
Can I combine boosters with Botox?
Yes, often on the same day.
How soon will I see a difference?
Hydration boosters show results within one to two weeks. Collagen stimulators take two to three months.
This article is general information and does not replace a consultation with a doctor. Last reviewed: October 2026.
