Dr.Park So Yoon Lectures on Ultracol Under-Eye Rejuvenation at the 2026 Korea Association of Anti-Aging Medicine Spring Congress
PDO Powder for Under-Eye Dark Circles, Fine Eye Wrinkles, Pores, and Periocular Skin Barrier Care
3-Line Summary
On May 17, 2026, Dr.Park So Yoon of Cheongdam Éclat de Clinic delivered an academic lecture on Ultracol, Triderm RF cannula, and under-eye rejuvenation at the 2026 Korea Association of Anti-Aging Medicine Spring Congress, held at Baekbeom Kim Koo Memorial Hall in Seoul.
The lecture focused on using PDO Powder not simply as a filler, but as a collagen-stimulating regenerative treatment for under-eye dark circles, fine wrinkles, pores, and delicate skin quality improvement.
The session also briefly introduced Dexiang MD cream as a supportive option for periocular dermatitis and sensitive eyelid skin barrier care.
Contents
Academic Lecture at the Korea Association of Anti-Aging Medicine
Why Under-Eye Dark Circles Require a Different Strategy
What Is Ultracol?
Why PDO Matters: Particle Size, Hydrophilicity, and Collagen Stimulation
Dual-Depth Technique with Ultracol 100 and 200
Why Triderm RF Cannula Matters
Eyelid Dermatitis and Dexiang MD Cream
Before & After Photo Section
Who Is a Good Candidate?
Treatment Effects and Timeline
Aftercare and Safety
Why Choose Cheongdam Éclat de Clinic?
Clinic Information and Hashtags
Key Question
Can under-eye dark circles be improved without surgery, using a collagen-stimulating treatment rather than conventional filler?
Answer
Yes, in selected patients.
At Cheongdam Éclat de Clinic, Dr.Park So Yoon approaches under-eye dark circles not simply as a volume-loss problem, but as a complex condition involving thin skin, shadowing, fine wrinkles, reduced light reflection, tissue laxity, and sometimes post-procedure adhesion.
This is why Dr.Park uses a refined strategy combining:
Ultracol 100 for superficial skin quality
Ultracol 200 for deeper structural support
Triderm RF cannula for tissue softening, tightening, adhesion release, and contour refinement
The goal is not to overfill the under-eye area, but to create a natural, gradual, collagen-based improvement.
Academic Lecture at the 2026 Korea Association of Anti-Aging Medicine Spring Congress
On May 17, 2026, Dr.Park So Yoon was invited to speak at the 2026 Korea Association of Anti-Aging Medicine Spring Congress, held at the Baekbeom Kim Koo Memorial Hall in Seoul.
Her lecture was titled:
“Treating Under-Eye Dark Circles, Fine Eye Wrinkles, and Pores Using PDO Powder”
The lecture focused on Ultracol, Triderm RF cannula, and the clinical application of PDO Powder for under-eye rejuvenation. The presentation introduced a layered strategy for treating under-eye dark circles, fine eye wrinkles, and skin texture concerns through collagen stimulation rather than simple volume replacement.
This congress was also especially meaningful because it was the first academic meeting held after the inauguration of President Kim Dong Hwan of the Korea Association of Anti-Aging Medicine.
Dr.Park So Yoon sincerely congratulates President Kim Dong Hwan on his new leadership and wishes the association continued academic growth in anti-aging medicine, regenerative therapy, and aesthetic medicine.
A Lecture by One of Korea’s Most Active Ultracol KOL Doctors
Dr.Park So Yoon is widely recognized as one of Korea’s most active and academically respected KOL doctors in the field of Ultracol and collagen-stimulating treatments.
She has delivered numerous lectures at major academic conferences in Korea and abroad, especially on:
Ultracol
PDO collagen stimulators
Under-eye dark circle correction
Triderm RF cannula techniques
Complication prevention and management
Dual-depth injection strategies
Regenerative aesthetic treatments
Among Korean Ultracol KOL doctors, Dr.Park So Yoon is known as one of the physicians who has lectured most extensively on Ultracol at academic meetings. Her knowledge of Ultracol is not limited to product use; it is based on years of clinical experience, complication management, and scientific interpretation of PDO material behavior.
In that sense, Dr.Park is often regarded as a key doctor among key doctors — a physician who continues to refine and teach advanced Ultracol techniques to other medical professionals.
Ultracol Ambassador Lee Dong Wook and the New Brand Direction
At the congress venue, the Ultracol booth also introduced actor Lee Dong Wook, who has been appointed as an Ultracol ambassador.
The booth presented Ultracol 100 and Ultracol 200 together with the renewed brand direction under LYV sciences. The presence of Lee Dong Wook as ambassador brought a more familiar and premium image to Ultracol, while the academic congress setting emphasized the medical and scientific value of the treatment.
For Dr.Park, the most important aspect remains the clinical foundation:
material science, safety, patient selection, injection depth, tissue response, and long-term outcomes.
However, when strong public branding is combined with deeper academic research and structured medical education, it can help both physicians and patients understand the treatment more clearly and responsibly.
Why Under-Eye Dark Circles Require a Different Strategy
Under-eye dark circles are rarely caused by one single factor.
They may involve:
- Thin lower-eyelid skin
- Visible vascular shadowing
- Tear trough hollowing
- Fine wrinkles
- Reduced skin elasticity
- Poor light reflection
- Irregular under-eye fat
- Post-filler tissue stiffness
- Adhesion after previous procedures
For this reason, simply filling the under-eye hollow with conventional filler may not always be the best option. In some cases, excessive filler may cause puffiness, bluish discoloration, or an unnatural contour.
Dr.Park emphasized during her lecture that under-eye treatment should be planned according to skin quality, tissue depth, shadow pattern, and collagen response.
What Is Ultracol?
Ultracol is a PDO-based collagen stimulator.
PDO, or Polydioxanone, is a biodegradable material that has long been used in absorbable surgical sutures. In Ultracol, PDO is formulated as microsphere powder, allowing it to stimulate collagen formation inside the skin and soft tissue.
Unlike conventional volumizing fillers, Ultracol is not designed to simply create immediate bulk. Instead, it works gradually by encouraging the tissue to produce new collagen over time.
Ultracol may be considered for:
- Under-eye dark circles
- Tear trough hollowing
- Fine eye wrinkles
- Pores
- Skin texture improvement
- Neck rejuvenation
- Subtle lifting
- Overall skin quality enhancement
In Dr.Park’s lecture, Ultracol was introduced as a collagen-stimulating filler that works through a controlled biological response rather than simple mechanical filling.
Why PDO Matters
1. Particle Size and Macrophage Interaction
One of the key scientific points in Dr.Park’s lecture was the relationship between PDO particle size and macrophages.
Macrophages are immune cells that can engulf and remove foreign particles. If particles are too small, they may be rapidly phagocytosed and disappear before producing sufficient collagen stimulation.
Ultracol is designed with PDO particles that are meaningfully larger than macrophages. This helps maintain a more controlled tissue response and supports collagen stimulation over time.
2. Hydrophilicity and Cell Adhesion
Another important characteristic of PDO is hydrophilicity.
PDO is more hydrophilic than materials such as PLLA or PCL. This hydrophilic property can enhance cell adhesion, which may support fibroblast activation and collagen production.
In simple terms, PDO is not only a material that temporarily remains in the tissue; it is a material that can help the tissue respond biologically.
However, Dr.Park also emphasized that hydrophilicity must be understood correctly. Because hydrophilic materials attract water, temporary swelling may occur in the early phase after treatment. This is why precise technique, appropriate dilution, careful counseling, and proper follow-up are essential.
Dual-Depth Technique with Ultracol 100 and 200
Dr.Park introduced a dual-depth strategy using Ultracol 100 and Ultracol 200.
Ultracol 100
Ultracol 100 is generally used for more superficial concerns such as:
- Fine wrinkles
- Skin texture
- Crepey under-eye skin
- Surface elasticity
- Pore-related texture concerns
Ultracol 200
Ultracol 200 is used more strategically for deeper support, including:
- Tear trough hollowing
- Structural under-eye shadow
- Deeper depression
- Subdermal support
This dual-depth approach is important because under-eye concerns often involve both superficial skin quality and deeper structural hollowing.
- Some patients need more skin quality improvement.
- Some patients need more structural support.
Why Triderm RF Cannula Matters
A major focus of Dr.Park’s lecture was the role of Triderm RF cannula.
Triderm RF cannula is not simply an energy device. In under-eye treatment, it may help:
- Soften tight tissue
- Improve tissue mobility
- Reduce irregular under-eye fat
- Release adhesion from previous procedures
- Improve contour irregularity
- Support tightening around the lower eyelid
- Assist in managing nodules or firm tissue reactions
This is especially important for patients who have had previous fillers, collagen stimulators, or other procedures that may have caused tissue stiffness, adhesion, or irregularity.
For Dr.Park, Triderm RF cannula is not just an optional add-on.
It is a tool that can improve both treatment precision and safety strategy in complex under-eye cases.
Eyelid Dermatitis and Dexiang MD Cream
At the end of the lecture, Dr.Park briefly discussed eyelid dermatitis and periocular skin barrier care.
Eyelid dermatitis may appear as redness, scaling, itching, stinging, burning, or tightness around the upper eyelid, lower eyelid, or periocular area. Its causes may include allergic contact dermatitis, irritant contact dermatitis, atopic dermatitis, seborrheic dermatitis, cosmetics, preservatives, fragrances, nail products, and topical ophthalmic medications.
Because eyelid skin is extremely thin and sensitive, repeated or prolonged steroid use can be a concern.
In this context, Dr.Park introduced Dexiang MD cream as a supportive option for periocular skin barrier care. The lecture also emphasized that moisturizers may help support the skin barrier and may provide moisturizing, anti-itch, anti-inflammatory, and wound-healing support in various dermatitis conditions.
At Cheongdam Éclat de Clinic, under-eye aesthetics are not separated from skin health.
For patients with sensitive periocular skin, proper barrier care before and after treatment can be just as important as the procedure itself.
Before & After Photo Section
Case 1. Under-Eye Dark Circles and Tear Trough Hollowing
Clinical Focus
Under-eye dark circles, tear trough hollowing, and lower-eyelid shadowing
Treatment Concept
Ultracol 200 for deeper support
Ultracol 100 for superficial skin quality
Triderm RF cannula for tissue softening and contour refinement
Suggested Caption
Under-eye rejuvenation should not be approached as simple volume replacement. In selected cases, Dr.Park So Yoon uses a dual-depth Ultracol strategy with Triderm RF cannula to improve both skin quality and structural hollowing.
Case 2. Fine Eye Wrinkles and Thin Under-Eye Skin
Clinical Focus
Fine under-eye wrinkles, thin skin, reduced elasticity, and dull skin texture
Treatment Concept
Superficial PDO collagen stimulation using precise micro-distribution
Suggested Caption
Ultracol is not a conventional filler. It is used as a PDO collagen stimulator to encourage gradual regeneration and natural-looking skin quality improvement.
Case 3. Under-Eye Puffiness, Tissue Irregularity, and Shadowing
Clinical Focus
Irregular under-eye tissue, puffiness, adhesion, and shadowing
Treatment Concept
Triderm RF cannula-assisted tissue remodeling combined with Ultracol collagen stimulation
Suggested Caption
In complex under-eye cases, RF cannula may help soften tissue and improve the treatment environment before precise PDO powder placement.
Who Is a Good Candidate?
Ultracol under-eye treatment may be suitable for patients with:
- Under-eye dark circles
- Tear trough hollowness
- Fine lower-eyelid wrinkles
- Thin or crepey under-eye skin
- Reduced skin elasticity
- Mild under-eye shadowing
- Pores or texture concerns
- Concerns about HA filler puffiness
- Concerns about Tyndall effect
- Previous filler-related stiffness
- Post-procedure tissue adhesion
- Preference for non-surgical under-eye rejuvenation
It may be especially attractive for international patients visiting Korea who want a refined, non-surgical under-eye treatment without a long recovery period.
Treatment Effects and Timeline
Ultracol results are gradual.
Some patients may notice early improvement in brightness or texture, but collagen stimulation develops over several weeks.
A general timeline may include:
- Early phase
- Temporary swelling, tenderness, or mild bruising may occur.
- Around 4 weeks
- Collagen activity may become more noticeable.
- Around 8 weeks
- Skin quality, contour, and under-eye brightness may appear more refined.
- Longer term
- Repeated sessions may help improve cumulative collagen response.
The number of sessions and interval vary depending on the patient’s anatomy, skin quality, previous procedure history, and desired result.
Aftercare
After Ultracol under-eye treatment, patients are generally advised to:
- Avoid strong massage unless instructed
- Avoid sauna, heavy exercise, and alcohol immediately after treatment
- Avoid harsh exfoliation or irritating skincare around the eyes
- Apply sunscreen carefully
- Use gentle moisturizers around the periocular area
- Follow swelling and bruising care instructions
- Return for follow-up evaluation when recommended
For patients with eyelid dermatitis or sensitive periocular skin, barrier care may be especially important.
Why Choose Cheongdam Éclat de Clinic
Cheongdam Éclat de Clinic is located in Cheongdam, Seoul — one of Korea’s most refined luxury beauty and medical aesthetic districts.
At the clinic, Dr.Park So Yoon personally designs treatment plans based on each patient’s anatomy, skin quality, lifestyle, and aesthetic goals.
Cheongdam Éclat de Clinic is known for:
Extensive experience with Ultracol
Advanced under-eye rejuvenation expertise
Dr.Park So Yoon’s frequent KOL lectures
Academic leadership in collagen stimulator treatments
Personalized treatment design by Dr.Park
Combination treatments using RF cannula and collagen stimulators
VIP private rooms
Premium cleansing and skincare support
Hyperbaric oxygen chamber
A refined Cheongdam luxury clinic environment
Experience caring for international K-beauty patients
For patients traveling to Korea, the clinic offers a sophisticated approach to non-surgical under-eye rejuvenation — combining academic knowledge, meticulous technique, and the elegance of Korean aesthetic medicine.
Closing Message from Dr.Park So Yoon
Under-eye treatment is not simply about filling a hollow.
It is about understanding the skin, the tissue, the shadow, the material, and the healing response.
Ultracol is meaningful because it allows us to think beyond volume.
With PDO collagen stimulation, dual-depth planning, and Triderm RF cannula-assisted tissue refinement, we can approach the under-eye area more naturally, safely, and scientifically.
— Dr.Park So Yoon
Cheongdam Éclat de Clinic
Clinic Information
Call us: +82-2-6120-8888 / +82-10-8899-2903
Visit us: Eclat de Cheongdam – 4F (Room 412A), Cheongdam Square A Bldg.
420 Dosan-daero, Gangnam-gu, Seoul, South Korea
Email: eclatedeclinic@gmail.com
Instagram: eclatde.usa
DM us for international appointments or English-language consultations
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