When your skin feels tight and rough from the heater in winter, many people wonder, "Should I just replenish moisture, or do I need to focus on regeneration too?" To put it simply, there isn't one right answer for skin boosters; the choice depends on whether your skin currently lacks moisture, regeneration, or elasticity.
Hello, this is Yonsei Star Dermatology Sinchon. In cold and dry seasons, the skin barrier weakens, and indoor heating further accelerates moisture loss. Many people ask which treatment to choose among Water-Luminous Injection, Rejuran Healer, and Juvelook during this time, so we will summarize the principles and characteristics of these three treatments.
What are Skin Boosters?
Skin boosters are a group of treatments that involve directly injecting moisture or regenerative ingredients into the skin to improve skin texture and elasticity. While there are many types, including exosomes and fillers, the representative treatments consistently chosen for their effectiveness and safety are Water-Luminous Injection for hydration, Rejuran Healer to aid damaged skin recovery, and Juvelook to stimulate collagen production.
These three treatments are categorized by generation due to their different main ingredients and mechanisms of action.
- 1st Generation Water-Luminous Injection: Uses hyaluronic acid as its main ingredient to provide moisture to the skin.
- 2nd Generation Rejuran Healer: Uses PN (polynucleotide) extracted from salmon DNA to help repair and regenerate damaged skin.
- 3rd Generation Juvelook: PDLLA ingredient promotes collagen production.
Rather than one booster being superior, the most suitable treatment varies depending on what your skin needs most right now.
Water-Luminous Injection, when immediate hydration is needed
Water-Luminous Injection is a relatively simple and easy treatment to receive. Hyaluronic acid is a naturally occurring component in the skin that attracts surrounding moisture, making the skin hydrated and vibrant, and helping with fine wrinkles.
However, hyaluronic acid gradually breaks down and disappears in the body after treatment, so its effects are typically temporary, lasting about 2-4 weeks, or up to 6 weeks. It is also good to consider that there are limitations in improving deep wrinkles.
Juvelook, the principle of helping collagen produce itself
Juvelook works by stimulating skin fibroblasts with PDLLA to promote collagen production. Therefore, instead of immediate changes, the effects last relatively longer, from 3 to 6 months, and even up to 1 year after treatment, showing a natural improvement in the skin.
When used, Juvelook combines PDLLA and hyaluronic acid to improve both skin elasticity and hydration. We also add Water-Luminous Injection ingredients during treatment, so you can expect not only hydration but also improved elasticity. For this reason, we often recommend premium Juvelook over regular Water-Luminous Injection.
If you have any questions, please feel free to inquire via chat consultation regarding skin booster selection.
Rejuran Healer, focusing on damaged skin recovery
Rejuran Healer contains polynucleotide extracted from salmon DNA, which improves damaged skin tissue, helping to make the skin healthy and increase elasticity. Its strength lies in its suitability for damaged or inflamed skin.
However, it can cause pain during treatment, and like most skin boosters, it works by injecting beneficial nutrients into the skin to aid indirect recovery, which is something to keep in mind.
Three treatments at a glance
| Category | Water-Luminous Injection | Rejuran Healer | Juvelook |
|---|---|---|---|
| Generation | 1st Generation | 2nd Generation | 3rd Generation |
| Main Ingredient | Hyaluronic Acid | PN (Polynucleotide) | PDLLA |
| Key Action | Moisture Supply | Damage Recovery and Regeneration | Collagen Production Promotion |
| Duration of Effect | Approx. 2-6 weeks | Varies by individual | Approx. 3 months-1 year |
| Best for | Hydration, Fine Wrinkles | Damaged, Inflamed Skin | Elasticity, Natural Improvement |
In the case of Juvelook, the PDLLA component induces collagen to form on its own, leading to an increase in collagen and elastin, which reportedly results in relatively clear treatment effects. In the consultation room, we often see that even for the same concern, the satisfactory treatment varies depending on the skin condition.
Things to check before choosing
Skin boosters vary depending on each individual's skin condition, desired effects, and budget. Reviewing the following items before receiving treatment can make your choice much easier:
- Distinguish whether your main concern is dryness or loss of elasticity.
- Decide whether you want immediate changes or gradual, natural improvement.
- Check if your skin condition requires recovery, such as damage or inflammation.
- Confirm the duration of effect and re-treatment cycle in advance.
- Confirm pre- and post-treatment precautions and pain levels during consultation.
Since the three boosters have slightly different characteristics, effects, and potential reactions, we strongly recommend consulting with a dermatologist before making a decision. Other procedures that can be performed together include Filler, which can be considered during consultation.
If you are hesitant about which skin booster is right for your dry skin or elasticity concerns, please feel free to consult about the right booster for my skin.
Dr. Sang-Joo Lee, Chief Director (MD, PhD, Yonsei University College of Medicine and Graduate School; completed dermatology residency at Severance Hospital; President of the Korean Dermatological Association) Dr. Sang-Joo Lee's Profile First published 2024-01-17 / Last reviewed 2026-06-16
This content is for general information purposes only. Treatment effects and responses may vary by individual, and accurate diagnosis and treatment decisions should be made through consultation with medical staff.