카테고리: Skin Care - 연세봄빛피부과

The Skin's Golden Hour: Why Sleeping Before 10 PM Matters

6/17/2025

Welcome to Skin Insights by YSBB.

Want baby-soft skin? Start by sleeping like a baby.

You've probably heard that “sleeping before 10 PM is good for your skin.” Far from an old wives’ tale, this saying is backed by science. Skin recovery, growth hormone release, and circadian clock gene activity are all synchronized to begin around 10 PM.

Today, let’s explore why the hours before midnight are your skin’s golden time—and how aligning your sleep can directly impact skin health.

1. Skin Only Regenerates During Sleep

Growth hormone, essential for skin renewal, is secreted only during sleep.
This hormone stimulates epidermal cell turnover and collagen synthesis in the dermis.
Most secretion happens between 10 PM and 2 AM, peaking about one hour after falling asleep.
If you miss this window, skin regeneration slows down noticeably.

2. 10 PM Is the Set Point for Your Skin’s Internal Clock

Your skin follows a circadian rhythm, with gene activation patterns changing by sleep timing.
During the day, skin is in defense mode; at night, it switches to repair mode.
This switch begins around 10 PM, when DNA-repair genes become most active.
Sleeping before 10 PM helps sync with this repair phase for optimal recovery.

3. Poor Sleep Physically Weakens the Skin

Sleep deprivation (less than 4 hours) leads to a 30% drop in stratum corneum hydration.
Sebum regulation becomes unstable, and transepidermal water loss increases.
Inflammatory markers (like CRP and IL-6) rise, worsening acne and triggering skin flare-ups.
This isn't just about appearance—skin immunity itself gets compromised.

4. How to Sleep Before 10 PM: A Night Routine That Works

Turn off screens at least 90 minutes before bed to support melatonin production.
Take a warm shower or foot bath 30 minutes prior to lower core body temperature.
Limit naps to 30 minutes before 3 PM to avoid disrupting your sleep rhythm.
Stick to consistent sleep and wake times—your skin remembers the rhythm.
Short-term sleep recovery doesn’t fully restore long-term skin repair cycles.

Final Thoughts

Skin doesn’t heal during the day—it heals at night. And the most critical hours are between 10 PM and 2 AM. Missing this window can delay skin repair, dull your glow, and increase inflammation.

If you’re dealing with ongoing breakouts or sensitivity, it may be time to rethink your sleep schedule—before switching skincare products.

YSBB Skin Clinic, Seoul, Korea

How CryoCell Helps Calm, Heal, and Strengthen Your Skin

5/28/2025

Welcome to Skin Insights by YSBB.

Have you ever applied moisturizer on irritated skin, only to feel like it's not enough? Sometimes what your skin truly needs is not more hydration, but a drop in temperature.

This is where CryoCell comes in — a cooling care treatment designed to instantly calm and restore sensitive skin. Let’s take a closer look at how CryoCell works and why it’s become an essential step at YSBB Skin Clinic.

1. What Is CryoCell Cooling Care?

Non-invasive cooling therapy using a direct-contact device
Lowers skin temperature by 6–10°C within minutes
Rapidly soothes inflammation, redness, and sensitivity

2. Key Benefits of CryoCell

Soothes Heat & Inflammation: Cools deep into the skin to relieve inflammatory reactions
Reduces Redness: Constricts blood vessels and calms flushed skin
Minimizes Swelling: Alleviates post-procedure puffiness for faster recovery
Strengthens Skin Barrier: Helps rebuild a compromised barrier after irritation
Enhances Treatment Results: Optimizes post-laser care by reducing downtime and boosting healing

3. When Do We Recommend CryoCell?

Right after laser or peeling treatments to manage lingering heat
For highly sensitive skin that flushes or reacts easily
During active flare-ups of acne or seborrheic dermatitis
After pore care when your skin needs gentle calming
When your skin feels “overheated” and moisturizers aren’t enough

4. What Makes CryoCell at YSBB Different?

Custom-calibrated pressure and duration based on your skin’s needs
Tailored programs for post-treatment recovery or sensitive skin care
Safe for acne, redness, and seborrheic dermatitis-prone skin
Can be combined with skin boosters or regenerative lasers for enhanced results

Final Thoughts

When your skin is heated, timing matters. Delaying care can make inflammation worse. CryoCell delivers fast, targeted relief when your skin needs it most — whether after a treatment or during a sensitive flare-up.

At YSBB Skin Clinic, CryoCell isn’t just about cooling. It’s a therapeutic step toward calming inflammation and restoring balance, with every session tailored to your skin’s condition.

YSBB Skin Clinic, Seoul, Korea

Topical vs. Oral Collagen: What Dermatologists Say

5/19/2025

Welcome to Skin Insights by YSBB.

With collagen products flooding the market, which ones truly benefit your skin?

Collagen is a vital structural protein that makes up about 70% of the dermis, playing a key role in maintaining skin elasticity and firmness.

From collagen creams and drinks to jellies, products touting anti-aging benefits are everywhere. But can these actually boost collagen in the deeper layers of your skin?

Today, we'll explore the science behind collagen absorption and production—clarifying the effects of topical and oral collagen, and introducing dermatologist-approved clinical strategies to support skin health.

1. Can Topical Collagen Penetrate the Dermis?

Collagen has a large molecular weight, approximately 300,000 Da. The outermost layer of the skin, the stratum corneum, blocks penetration of molecules larger than 500 Da.

Therefore, it is widely accepted that topically applied collagen cannot reach the dermis.

Some products use hydrolyzed collagen or peptides for better surface effects.
These may improve hydration and texture—but the effect often comes from added humectants like glycerin or ceramides, not collagen itself.

2. Can Ingested Collagen Reach the Skin?

When taken orally, collagen is broken down in the stomach and absorbed as peptides through the small intestine into the bloodstream.

Studies suggest that certain low-molecular collagen peptides may reach the dermis and stimulate fibroblasts to produce new collagen.

Effective forms: Low-molecular collagen peptides (3–6 kDa)
Recommended dosage: 2,500–10,000 mg per day
Duration: At least 8–12 weeks of consistent intake
Source: Mainly animal-derived Type I and III collagen

However, absorption rates vary significantly between individuals. Oral collagen is better viewed as a supportive measure, not a primary treatment.

3. What Scientifically Proven Methods Stimulate Collagen?

As we age, collagen naturally declines, and factors like UV exposure, oxidative stress, and inflammation accelerate its breakdown.

In dermatology, various treatments are designed to stimulate natural collagen production in the dermis—targeting the root cause of skin aging.

JuveLook (PDLLA-based biostimulator): Long-lasting collagen production and enhanced dermal density
Rejuran Healer (PN-based): Supports skin regeneration and barrier repair
Shrink Universe (HIFU): High-intensity ultrasound stimulates SMAS and dermis for collagen lifting
Tensurama (Radiofrequency): Localized dermal heating activates fibroblasts and remodels collagen

These techniques work from the inside out, promoting natural regeneration rather than superficially adding substances—offering more lasting and authentic improvement.

Final Thoughts

Collagen doesn’t get stored in your skin just because you apply or consume it. From a dermatologist’s perspective:

Topical collagen: Mainly serves as a moisturizing agent
Oral collagen: Can support collagen levels, but as a secondary measure
Clinical treatments: Most effective way to induce collagen regeneration

At YSBB Skin Clinic, we offer personalized collagen renewal programs based on precise skin structure and elasticity diagnostics.

YSBB Skin Clinic, Seoul, Korea

TV Time, Skin Time: Facial Massage You Can Do on the Couch

5/17/2025

Welcome to Skin Insights by YSBB.

Imagine improving skin elasticity while watching your favorite drama on Netflix. At YSBB Skin Clinic, we believe good skincare can start with small, consistent habits—right from your living room.

Today, let’s walk through a relaxing facial massage routine you can follow while watching TV. No tools are needed—just clean hands, some moisturizer, and a few mindful movements.

Facial Massage While Watching TV

Lymphatic Drainage Massage – Reduce Facial Puffiness
Gently sweep your fingertips:

From temples toward your scalp
From the corners of your mouth up along your jawline to your earlobes
From behind the ears down the side of your neck toward the collarbone

Repeat each motion 5–10 times to promote lymph flow and reduce swelling.
If your skin feels dry, apply a light layer of moisturizer beforehand to reduce friction.

Forehead & Glabella Relaxation – Prevent Expression Lines
Release tension in frequently used muscles:

Use your middle or ring fingers to sweep from the center of the forehead toward the temples
Apply circular pressure gently between the eyebrows to relax the glabella

This helps reduce the appearance of fine lines from repeated frowning.

Nasolabial Fold Massage – Soften the Smile Lines
Lift and stimulate the muscles around your mouth:

Sweep gently from the sides of your nose to the cheekbones
Use circular motions around the corners of your mouth

This can help refresh your expression and reduce tension in the lower face.

Tapping Massage – Boost Skin Vitality
Also known as “tapping,” this technique stimulates circulation:

Lightly tap your forehead, cheeks, jawline, and under the eyes using your fingertips
Repeat each area for about 1–2 minutes, totaling around 5 minutes

Great for promoting blood flow and balancing skin temperature.

Final Step: Hydration Boost
Lock in moisture after your massage:

Warm up a hydrating ampoule or cream in your palms
Press gently into your face, covering the entire area

This enhances absorption and supports lasting skin firmness.

Final Thoughts

Skincare doesn't always require extra time—just intention. A short facial massage during your favorite show can help maintain skin elasticity and leave you feeling refreshed.

Try it tonight, and give your skin a little care between scenes.

YSBB Skin Clinic, Seoul, Korea

Is Air Conditioning Drying Out Your Skin?

5/16/2025

Welcome to Skin Insights by YSBB.

As the temperature rises, air conditioning becomes a daily necessity. But while the cool breeze brings comfort, it may be quietly stressing your skin. Today, let’s explore how air conditioning affects your skin—and what you can do to protect it.

1. Why Does AC Air Dry Out the Skin?

When the AC runs, both the temperature and humidity levels in the room drop. This leads to faster evaporation of moisture from the skin. If cold air hits your face directly, skin temperature drops, blood circulation slows, and sebum secretion decreases. This chain reaction weakens the skin barrier and makes your skin more prone to dryness and irritation—especially for those with already dry or sensitive skin.

2. Signs Your Skin Is Stressed by Air Conditioning

Your face feels tight and makeup doesn't sit well.
Prolonged indoor time causes itching and redness.
The skin around your eyes feels flaky or stings.
You notice more flakiness around your mouth.

3. Everyday Tips to Shield Your Skin from AC

Avoid direct airflow: Adjust vents to blow toward the ceiling or wall instead of your face.
Keep indoor humidity between 40–60%: Use indoor plants or a humidifier to help regulate moisture.
Don’t skip moisturizers in summer: Use lightweight hydrating creams both morning and night. During the day, reapply cream rather than mist to lock in moisture.
Moisturize within 3 minutes after showering: This helps trap water before it evaporates. Be sure to apply body lotion or cream as well.
Apply sunscreen indoors too: UV rays can penetrate windows and irritate the skin.
Extra care for delicate areas: Use eye cream and rich lip balms to protect thinner skin around the eyes and mouth.

4. Help Your Skin Recover

Limit washing to twice a day with lukewarm water.
Use gentle cleansers and avoid harsh exfoliation.
Look for calming ingredients like panthenol, allantoin, madecassoside, and ceramides.

YSBB Recommendations for Summer Skin Care

Persistent dryness? Try barrier-repairing laser treatments or calming skin programs.
Skin sensitivity? Opt for dermatologist-formulated moisturizers or regenerative care.
Constant exposure to AC? Weekly calming treatments can give your skin the recovery time it needs.

Final Thoughts

Living without air conditioning in the summer is nearly impossible—but protecting your skin is definitely doable. By following these simple tips, your skin can stay healthy, calm, and comfortable. If dryness or irritation persists, consider visiting YSBB Skin Clinic for a personalized assessment and treatment plan.

YSBB Skin Clinic, Seoul, Korea

Why Blackheads Worsen in Summer—and How to Fix Them

5/15/2025

Welcome to Skin Insights by YSBB.

As temperatures rise and humidity spikes in summer, our skin faces a surge in oil production. That’s when blackheads start becoming more visible—especially around the nose, forehead, and chin.

Why Do Blackheads Worsen in Summer?

Increased Sebum Activity: A 1°C rise in temperature can increase sebum secretion significantly, activating oil glands more aggressively in summer.
Mix of Sweat and Sebum: Sweat leaves behind salts and waste that mix with oil, clogging pores and triggering blackheads.
Thicker Dead Skin Cells: UV exposure causes skin to thicken as a defense, making it harder for oil to escape, worsening blackhead buildup.

How to Manage Blackheads Scientifically

Never forcibly squeeze: Pressing blackheads can damage surrounding tissue, causing inflammation or enlarged pores.
Update your cleansing routine: Wash your face twice a day with lukewarm water and a mild cleanser. Leave the foam longer on oily areas like the nose.
Exfoliate just 1–2 times per week: Use chemical exfoliants like AHA, BHA, or PHA. Avoid physical scrubs that may cause irritation.
Use calming and pore-tightening care: Apply soothing toners with allantoin or panthenol. Pat gently for absorption—do not rub.

YSBB Dermatologist Treatments for Blackheads

Jessner Peel: AHA clears dead skin near pore openings while BHA penetrates deeper to clear sebum and rebalance pores.
Post-extraction calming: After safe in-clinic extraction, anti-inflammatory and soothing laser treatments minimize redness and irritation.
Alex Toning: If pigmentation or redness is present around pores, this laser treatment helps brighten and even out skin tone.
Aqua Peel: High-pressure water cleansing removes oil while refreshing the skin—especially effective for summer blackhead control.

Final Thoughts

Blackheads aren’t a sign of poor hygiene—they’re a visible result of imbalanced skin conditions. Rather than squeezing or irritating them, a scientific approach focused on oil control, gentle exfoliation, and professional care is key to healthy, clean pores.

At YSBB Skin Clinic, we offer safe and precise blackhead treatments designed to restore clarity from within your pores.

YSBB Skin Clinic, Seoul, Korea

Simple Steps to Discover Your Skin Type and Care for It Right

5/13/2025

Welcome to Skin Insights by YSBB.

“I’m not sure what my skin type is.” This is one of the most common concerns we hear at YSBB Skin Clinic.

Understanding your skin type is the first step to choosing the right skincare routine. Today, let’s look at how you can identify your skin type at home and how to take care of each type effectively.

1. How to Identify Your Skin Type

After cleansing your face, wait at least an hour without applying any skincare products. This simple observation method helps you determine your natural skin condition.

Oily Skin: Noticeable shine across the entire face; visible pores; greasy feeling on cheeks, T-zone, and jawline.
Dry Skin: Feels tight after cleansing; flakiness or rough texture; makeup tends to cling or flake.
Combination Skin: Oily T-zone (forehead and nose) but dry or tight cheeks; different areas show different characteristics.
Sensitive Skin: Frequent redness, stinging, or burning without clear triggers; easily irritated by heat, masks, or skincare products.

Another method: the tissue test. Two hours after cleansing, press a tissue against your face:

Oil on forehead, nose, and cheeks → Oily
Little to no oil → Dry
Oil only on T-zone → Combination

2. Skincare Tips by Skin Type

Oily Skin: Focus on hydration instead of oil removal. Choose oil-free and non-comedogenic products. Use gentle cleansers and avoid harsh exfoliation.
Dry Skin: Use hydrating creams with hyaluronic acid, ceramides, or panthenol. Choose mildly acidic cleansers. Limit exfoliation to once a week with gentle products.
Combination Skin: Care for T-zone and U-zone differently. In summer, prioritize oil control; in winter, focus on hydration. Adjust products by zone using cotton pads for precision.
Sensitive Skin: Choose simple, fragrance-free, low-irritation products. Avoid alcohol and strong acids. Look for soothing ingredients like madecassoside or panthenol.

3. When to See a Dermatologist

If your skin suddenly develops new breakouts or reactions
If redness or itching persists despite using mild products
If your skin remains rough and sensitive no matter how well you moisturize

Final Thoughts

Even high-quality skincare products can be ineffective—or even harmful—if they don't suit your skin type. Start by understanding your skin, and adapt your routine as your skin’s needs change.

At YSBB Skin Clinic, we provide personalized skincare and treatment plans based on accurate skin type analysis.

YSBB Skin Clinic, Seoul, Korea

Tiny Bumps Under the Skin? What You Need to Know About Milia

5/12/2025

Welcome to Skin Insights by YSBB.

Have you ever noticed small, white bumps around your eyes or cheeks that feel like tiny grains under the skin?

These are called milia—not acne or sebum plugs, but keratin-filled cysts that form just beneath the skin’s surface. While painless, they often linger and don’t go away on their own. Today, let’s explore what causes milia, how to treat them safely, and tips for prevention.

What exactly are milia?

Milia are tiny, white or yellowish bumps made of trapped keratin under the skin. They’re most common in areas with thin skin like the under-eye area, cheeks, or forehead.

They’re not pimples or oil-based comedones, but hardened dead skin cells.
Usually painless and non-inflammatory, but visually persistent.

Why do milia form?

Milia develop when skin turnover slows and dead skin cells become trapped instead of naturally shedding. This can occur under several conditions:

Sluggish skin turnover: Keratin builds up beneath the surface, especially with aging or skin thickening.
Post-procedure healing: Laser, peeling, or surgical recovery can lead to secondary milia formation.
Heavy skincare products: Occlusive creams like rich eye creams can block normal exfoliation, especially on delicate areas.
Genetic predisposition: Some skin types naturally shed keratin less efficiently, leading to recurring milia.

Can I remove them at home?

It’s important to resist the urge to squeeze or pick at milia. Unlike acne, they don’t have an opening and can’t be expressed without damage.

Forcing them out can cause bruising, pigmentation, or scarring.
Especially around the eyes, this can lead to sunken skin or prolonged redness.

YSBB Skin Clinic's gentle removal method

At YSBB, we remove milia safely and precisely:

We disinfect the skin and use a fine CO2 laser to make a pinpoint incision.
Keratin is extracted without damaging surrounding tissue.
Minimal risk of scarring, with immediate return to daily activities.

How can I prevent milia?

While they can form spontaneously, a few skincare habits can help reduce recurrence:

Gentle exfoliation: Use enzyme-based exfoliants 1–2 times per week to keep turnover steady.
Use lightweight eye creams: Choose quick-absorbing formulas and apply sparingly with soft tapping motions.
For frequent cases: Consider regular professional extraction or consultation with a dermatologist.

Final Thoughts

Milia are common and harmless, but managing them properly is key to avoiding unnecessary scars and pigmentation. With proper skincare and safe removal techniques, you can maintain a clear, even-toned complexion.

If you’re struggling with persistent bumps or want professional care, don’t hesitate to reach out to a specialist.

YSBB Skin Clinic, Seoul, Korea

Study Stress and Acne: How to Manage Your Skin During Exam Season

5/12/2025

Welcome to Skin Insights by YSBB.

Does your skin break out during exams or study marathons? If you’ve ever said, “I only get acne when I’m studying,” you’re not imagining it. There’s a clear connection between academic stress, oil production, and acne flare-ups.

Let’s explore how stress impacts your skin, and how to manage breakouts during test season.

1. How Stress Triggers Acne

Cortisol overload: Stress increases cortisol, a hormone that stimulates your oil glands—leading to clogged pores and breakouts.
Weakened immunity: A stressed body has a harder time fighting off acne-causing bacteria, increasing inflammation and redness.
Sleep & diet disruption: Poor sleep and late-night snacks (especially sugar and fried foods) disrupt skin turnover and worsen congestion.

2. How to Manage Stress-Related Acne

Stick to the basics: Even on your busiest days, don’t skip cleansing, moisturizing, and sunscreen.
Avoid cramming: Pulling all-nighters is tough on your skin. Aim for 6+ hours of sleep, avoid sugary and greasy snacks, and maintain a balanced diet.
Anti-inflammatory support: Foods rich in omega-3s, zinc, vitamin A, and vitamin E help calm the skin from within.

3. What YSBB Skin Clinic Can Do

Intralesional injections: Quickly reduce redness and swelling from painful, inflamed pimples.
Comedone extraction & scaling: Remove clogged pores and smoothen skin texture.
Medical therapy: Oral and topical prescriptions customized to your acne type.
Clarity II laser: Targets acne bacteria and reduces post-acne redness.
Genesis laser: Calms sensitive skin and controls excessive oil production.

Final Thoughts

While study stress may be unavoidable, skin stress doesn’t have to be. If acne is affecting your confidence during exams, let’s treat it early and effectively. Managing your skin today helps you focus better—and feel better—tomorrow.

YSBB Skin Clinic, Seoul, Korea

Simplify Your Skincare: A Minimalist Guide

5/10/2025

Welcome to Skin Insights by YSBB.

Did you know that using fewer skincare products can actually benefit your skin?

At YSBB Skin Clinic, we often meet patients who use five to seven different skincare products daily, sometimes even adding sheet masks every night. But is this routine really necessary for everyone?

Today, we’ll share a dermatologist’s approach to a simplified skincare routine that keeps only the essentials.

Why simplify your skincare routine?

Using many products may seem helpful, but it can actually irritate or confuse your skin.

Layering multiple products increases the chance of ingredient clashes that irritate the skin.
Preservatives and fragrances from many products can build up and cause side effects.
Those with sensitive or acne-prone skin may experience worsening conditions.

Especially if you have acne or reactive skin, excessive products might be doing more harm than good.

How much can you simplify?

From a dermatologist’s perspective, the following three-step routine is often enough:

Cleansing: 1–2 times daily with a mild, low-pH cleanser
Moisturizing: Hydrating moisturizer tailored to your skin type
Sun Protection: SPF 30 or higher, applied every morning before going out

These three are considered non-negotiable essentials in any skincare plan.

Other functional products, like brightening or firming creams, can be added based on your specific needs.

Are there any exceptions?

Not everyone needs to follow the same routine. Adjustments are important for special cases:

Acne-prone skin: Add topical acne treatments
Very dry skin: Use an emollient-rich moisturizer immediately after washing
After laser treatments: Combine calming ampoules with barrier-repair creams

In short, “minimal care” doesn’t mean skipping essentials — it means removing the excess and focusing on what your skin really needs.

Final Thoughts

More products don’t always mean better results. A simplified routine can help restore your skin’s natural balance and resilience.

Start with these three steps:

Cleansing
Moisturizing
Sun protection

Then build a routine that’s right for your skin type and condition.

At YSBB Skin Clinic, we believe in smart, tailored care — not more products, but better choices.

YSBB Skin Clinic, Seoul, Korea

위치 & 오시는 길

주소: 서울시 구로구 시흥대로 551 광희빌딩 4층 (1층에 버거킹과 SC제일은행이 있습니다.)
지하철: 2호선 구로디지털단지역 6번출구로 나와 시흥대로 방면(남서쪽) 280미터입니다.
자가용: 디지털단지 입구 교차로에서 이마트 방향으로 진입 후 유턴하세요.
주차장: 주차장은 건물 우측에 있습니다. 진료고객은 1시간 무료주차입니다.

오시는 길 자세히 보기

지도

진료시간

월,목 10AM - 8PM (야간진료)
화,수,금 10AM ~ 7PM
토요일 10AM - 3PM (점심시간 없음)
점심시간 1PM - 2PM

전화번호

카카오톡 친구 상담

site map / search

연세봄빛 소개: 소개 / 둘러보기 / 장비안내 / 진료시간 / 오시는 길
새소식: 이벤트 / 학술활동 / 미디어 소개 / 전후사진(로그인 필요)
프리미엄 시술 안내: 기미 / 탈모 / 리프팅 / 여드름 / 모공 / 흉터
시술별 상세 안내: 보톡스,필러 / 얼굴색소 / 국소미백 / 비만,체형 / 문신제거 / 영구제모 / 수액치료
질환안내: 화상,상처,켈로이드 / 건선,백반증 / 아토피 / 포진 / 두드러기,알러지 / 기타탈모 / 지루피부염 / 사마귀,티눈 / 무좀,백선증
상담 및 예약

SNS / contact

전화 02-837-8275

Language / Link

language

협력병원

학회

로그인/등록 내계정 로그아웃 개인정보취급방침 비급여항목수가고지 사이트이용약관