- Duration
- Depends on the injection area; explained after consultation
- Recommended sessions
- Maintenance after an initial few sessions
(intervals explained after consultation) - Downtime
- Bumps usually settle within about a day; swelling and bruising may last a few days
BYRYZN is a hyaluronic acid skin booster that is absorbed over time, so repeat treatments are needed to maintain the result. The degree of change and how long it lasts vary by individual, and swelling, bruising and bumps may occur. Suitability and the number of sessions are decided after examination.
01Overview
BYRYZN
A skin booster that replenishes moisture within the skin with hyaluronic acid
BYRYZN is a hyaluronic acid (HA)-based skin booster made by Hugel. It is injected in small portions into the shallow dermis to replenish moisture within the skin.
- Duration
- Depends on the injection area; explained after consultation
- Recommended sessions
- Maintenance after an initial few sessions
(intervals explained after consultation) - Downtime
- Bumps usually settle within about a day; swelling and bruising may last a few days
- How long it lasts
- Several months
(varies by area, skin condition and individual)
How we approach it
The same device can be run very differently.
Rather than a famous or trending skin booster, Grays first considers a combination that is gentle on the skin and lasts.
We do not believe that putting in a lot of one ingredient is the way to healthier skin. When only the ingredients that are truly needed are layered in small amounts, longevity improves and side effects decrease. We use BYRYZN on its own or in combination within this principle.
Dr. Tae Hoon Kim, Medical Director
02What to expect
Changes over time
Hyaluronic acid with fine particles and soft viscoelasticity stays at the injection site and holds on to moisture, refining fine lines and dull, rough texture caused by dryness.
01Right after treatment
The injection sites may be slightly raised or red. This usually settles within about a day.
02Days 1–3
Slight swelling and bruising may remain. Daily life is mostly possible.
031–2 weeks
As swelling goes down, this is a good time to check changes in skin hydration and texture.
04Over the sessions
A few sessions in a row build up the skin's condition. Intervals are decided based on your response.
05Maintenance
Maintenance timing is set together to match how quickly the hyaluronic acid is absorbed.
03Device & Technology
BYRYZN Skinbooster HA Device
High-concentration hyaluronic acid
A skin booster centred on hyaluronic acid, which holds on to moisture within the skin.
Fine particles · soft viscoelasticity
A formulation with small particles and soft viscoelasticity so that it spreads evenly in a shallow layer.
X-injector
Delivers in divided portions at a consistent depth and volume, reducing the burden of pain, bruising and bumps.
04Procedure
How your visit goes
01Specialist diagnosis
We check your skin's hydration, thickness and where fine lines are located.
02Planning
We decide the injection areas and volume, and whether to use it alone or together with other ingredients.
03Numbing
Topical numbing cream is applied, and nitrous oxide conscious sedation can be used as well if needed.
04Injection
The specialist injects evenly in small portions into the shallow layer using the X-injector.
05Aftercare
We explain same-day precautions and when to schedule your next session.
Every procedure is performed directly by a board-certified dermatologist.
05Aftercare
Recovery & care
- 01
Day of treatment
Do not rub or press the injection sites. Gentle face washing is fine.
- 02
First 3 days
Avoid saunas and jjimjilbang (Korean bathhouses), heavy drinking and strenuous exercise.
- 03
1–2 weeks
Keep up with moisturising and sun protection. If you feel a lump or the area becomes red, please contact us.
- 04
Follow-up
Your next session and maintenance timing are decided based on your progress.
06FAQ
Frequently asked questions
What kind of treatment is BYRYZN?
It is a treatment in which a hyaluronic acid-based skin booster made by Hugel is placed in small portions into the shallow dermis. The hyaluronic acid holds on to moisture within the skin and is used to refine fine lines and dull, rough texture caused by dryness. It is not a treatment that changes facial shape, but one that cares for your skin's condition.
How is it different from filler?
Filler aims to create shape and volume in hollowed areas, whereas BYRYZN aims to replenish moisture within the skin by spreading very small amounts widely in a shallow layer. Even within the same hyaluronic acid family, the layer, amount and expected change differ. If there are areas that need volume, we plan them separately after examination.
How is it different from other hyaluronic acid skin boosters?
Hyaluronic acid skin boosters differ slightly from product to product in particle size, viscoelasticity and the other ingredients they contain. Rather than one being better than another, the right product depends on your skin thickness, the area and the change you want. After examination, Grays suggests whichever of BYRYZN, Skinvive and others suits your skin right now.
How does it relate to Grays Glow Booster (BICOS™)?
Grays Glow Booster is a program that, rather than putting in a lot of a single ingredient, layers small amounts of ingredients that complement each other. BYRYZN is used as one of its components. Whether BYRYZN on its own or a combination like the Glow Booster suits you better is decided after looking at your skin condition.
How painful is it?
As it is an injection treatment, you will feel some stinging. After topical numbing cream, we inject with the X-injector to reduce pain, bruising and bumps, and when needed, nitrous oxide (laughing gas) conscious sedation can be used as well. How much you feel depends on the area and the individual.
When does the effect appear, and how long does it last?
The hydrated feel tends to come relatively quickly, and refinement of texture is often seen from around 1–2 weeks, once swelling has gone down. Because hyaluronic acid is absorbed over time, we expect it to last several months, though this varies with the area and your skin condition.
How many sessions do I need?
Typically, you receive a few sessions in a row a few weeks apart at first, then move to maintenance care based on your condition. The exact number of sessions and intervals are explained after consultation, based on how dry your skin is and your response to the first session.
Are there side effects, or cases where the treatment is not suitable?
Swelling, bruising and bumps may occur at the injection sites, and most settle within a few days. Rarely, nodules or infection may occur, so if redness or pain keeps getting worse, please contact us right away. If you are pregnant or breastfeeding, have inflammation at the injection site, or have had a hypersensitivity reaction to hyaluronic acid products, please be sure to tell us during your consultation.
How much does BYRYZN cost, and how do I book?
The cost varies with the injection area, volume and number of sessions, so it is confirmed after examination. Non-covered treatment fees can be found on the pricing page of our website. Booking and consultations are available via Naver Booking, our KakaoTalk channel, or phone (+82-51-710-1891), and you can also consult with us via LINE.
Fees
Pricing depends on injection area, volume and number of sessions, and is confirmed after consultation.
See the fee schedule →References 5
- Approval: BYRYZN Skinbooster HA · MFDS (Korean FDA) approved
- Manufacturer: Hugel (Korea)
- Korea MFDS medical device registry
- Korean Dermatological Association
- Reviewed by: Dr. Tae Hoon Kim, Medical Director
⚠ Cautions & contraindications
- Active infection or inflammation at the injection site
- Pregnancy or breastfeeding
- If you take anticoagulants, be sure to tell us during consultation (increased risk of bruising)
- History of hypersensitivity to hyaluronic acid products or other ingredients of the product
Summary & comparison
| Treatment | Target layer | Main change | Duration | How long it lasts | Downtime |
|---|---|---|---|---|---|
| BYRYZN | — | A skin booster that replenishes moisture within the skin with hyaluronic acid | Depends on the injection area; explained after consultation | Several months (varies by area, skin condition and individual) | Bumps usually settle within about a day; swelling and bruising may last a few days |
| Rejuran / Rejuran HB | L2 Dermis | A regenerative injection that restores damaged skin from its foundation | 20-30 minutes | Several months after completing the course (individual results vary) | Injection marks and slight swelling possible for 1-3 days |
| SkinVive | L2 Dermis | Micro-droplet hyaluronic acid for a lit-from-within glow | 15-25 minutes | Several months (individual results vary) | Slight marks possible for up to a day |
| Hilowave | L2 Dermis | Volume support for areas where filler feels like a burden | Advised after consultation, depending on area and coverage | Advised after consultation, depending on area and volume (individual results vary) | Injection marks, swelling, or bruising possible (duration advised at your visit) |
| Revive Exosome | — | Exosome care that aids absorption with plasma and ultrasound, without injections | Advised after consultation, depending on care coverage | No claims made about effect or duration (varies by individual) | Temporary redness or warmth possible (degree advised at your visit) |
Treatments used for the same concern, placed side by side. Which one fits is decided in consultation after the layer is identified.
Aftercare
Skin boosters · regenerative injections
Needle marks and slight swelling last a day or two. Treatment is usually given in several sessions, so keeping to the interval matters more than the recovery itself.
Recovery course
- Day of treatmentInjection marks, swelling or bruising may be visible. We recommend skipping makeup that day.
- Days 2–3Swelling settles. Bruising can last up to a week for some people.
- Week 1Changes in skin texture start to show. You can return to your usual routine.
- Between sessionsTypically 3–5 sessions at 2–4 week intervals, depending on the product and skin condition.
Precautions
- Sauna, hot baths, strenuous exercise and alcohol: for 2 days after treatment
- Long periods in swimming pools or public baths on the day of treatment
When to contact the clinic
- The injection area becomes increasingly firm and red
- Pain worsens together with warmth
- Bruising lasts longer than 2 weeks
Next session · next visitKeeping to the interval set at consultation has a real effect on the result.
Full aftercare guide →
Next step
Wondering if this treatment fits you?
Tell us what concerns you, and after your consultation we will explain the suitable treatment, schedule and fees in detail.