Tag: Collagen

  • Neck Wrinkles: 5 Care Tips to Treat Your Neck Like Your Face

    Neck Wrinkles: 5 Care Tips to Treat Your Neck Like Your Face

    SummaryHere are 5 ways to care for neck wrinkles. Neck wrinkles develop from a combination of sun exposure, dryness, repeated posture habits, and structural changes in the skin, and collagen is reported to decline by about 1% every year starting in the mid-20s. Discover prevention habits — sun protection, moisturizing, and posture care — that treat your neck just as consistently as your face.

    how to care for neck wrinkles

    Have you ever finished washing your face, looked in the mirror, and felt happy with your complexion — only to notice the horizontal lines on your neck standing out?

    It’s easy to carefully apply toner and cream to your face while skipping your neck entirely.
    And in drier seasons, fine lines and rough texture tend to show up more noticeably than usual.

    Let’s take a closer look at why neck wrinkles form and how to start a neck wrinkle care routine.

    neck wrinkle care - image 2

    Key Takeaways
    The foundation of neck wrinkle care is applying sun protection, moisturizer, and mindful posture habits to your neck just as consistently as you do your face.
    Reports suggest that skin collagen declines by about 1% each year starting in the mid-20s, and that tilting your head forward around 30 degrees to look at a smartphone can increase the load on your neck to roughly 18kg (about 40 lbs) — so it’s worth paying attention to everyday posture and care habits.
    Because deep, established neck wrinkles are difficult to fully eliminate with cosmetics or massage alone, prevention and consistent lifestyle habits matter even more.

    neck wrinkle care - image 3

    Why Do Neck Wrinkles Form?

    Neck wrinkles don’t form from aging alone — they result from a combination of posture, sun exposure, dryness, and skin aging.

    Neck wrinkles are horizontal lines that develop when repetitive neck movement, external stressors, and internal skin aging act together.

    Repeatedly tilting your head down to look at a smartphone or laptop for long periods causes the skin to fold in the same spot over and over.
    That said, it’s more accurate to view smartphone use as one factor that makes existing wrinkle lines more noticeable, rather than concluding that phone use alone causes neck wrinkles.

    neck wrinkle care - image 4

    Many people apply sunscreen carefully to their face but forget their neck.
    Long-term UV exposure can lead to photoaging, which may also affect the structures that help skin maintain its elasticity.

    Excessive exposure can accelerate skin aging and may lead to health risks such as skin cancer.

    Korea’s Ministry of Food and Drug Safety (MFDS) explained this while guiding proper sunscreen use.

    neck wrinkle care - image 5

    When skin is dry, fine surface lines and rough texture can appear more pronounced than usual.
    In fall and winter, lower humidity combined with indoor heating can easily dry out not just your face but your neck as well.

    neck wrinkle care - image 6

    As we age, the production and structure of collagen and elastin in the skin change.
    As the dermis loses supportive strength, elasticity declines — meaning neck wrinkles aren’t just a surface-level issue but a change that appears alongside internal aging.

    neck wrinkle care - image 7

    Cause Description
    Repeated posture Habit of looking down at a smartphone or laptop for long periods
    UV exposure Easy to forget sun protection on the neck
    Skin dryness Lack of moisture from low humidity and indoor heating
    Structural changes from aging Decreased collagen and elastin, reduced dermal support

    Why Does Collagen Matter for Neck Skin?

    Behind the loss of elasticity in neck skin lies a decline in collagen.

    Collagen is a key protein that makes up the skin’s dermis and helps maintain its structure and support.

    neck wrinkle care - image 8

    According to one media report, collagen is said to decline by about 1% per year starting in the mid-20s, dropping to roughly half of 20-something levels by the 40s and to about 10% of that level by the 70s.
    Other reports note that type I procollagen in skin over age 80 was measured at about 68% lower than in ages 18-29, and that dermal thickness in sun-protected areas can thin by up to 50% between ages 30 and 80.

    On top of this, repeated exposure to external factors like UV light can accelerate aging, making fine lines or deeper wrinkles more noticeable than before.

    Key Points
    ✔ Collagen is reported to naturally decline by about 1% per year starting in the mid-20s
    ✔ Reports suggest levels drop to about half by the 40s and to roughly 10% by the 70s, compared to the 20s
    ✔ Dermal thickness may thin by up to 50% between ages 30 and 80, according to reports

    Neck Wrinkle Care: Where Should You Start?

    The key isn’t trying a special technique once — it’s consistently repeating basic care.

    Neck wrinkle care means extending sun protection, moisturizing, and posture habits to your neck, just as you already do for your face.

    neck wrinkle care - image 9

    ① When heading outside, apply sunscreen evenly to your neck as well as your face.
    If you’ve sweated heavily or spent a long time outdoors, reapply according to the product’s directions.

    neck wrinkle care - image 10

    ② After washing your face or showering, gently extend the moisturizer you use on your face down to your neck.
    An expensive neck-specific product isn’t necessary — any gentle, well-suited product that doesn’t irritate your skin is enough.

    neck wrinkle care - image 11

    ③ Hold your phone screen closer to eye level, and change position periodically instead of holding one posture for too long.
    An overly high pillow can also force your neck into an excessively bent position, so choose a height that suits your body.

    Caution
    Repeatedly pulling the skin tightly or massaging it too hard in an attempt to erase neck wrinkles can actually irritate the skin.
    When applying moisturizer, gently smooth it on rather than rubbing it in forcefully.

    neck wrinkle care - image 12

    ④ It’s also important not to expect that massage alone can eliminate neck wrinkles that are already deeply set.

    neck wrinkle care - image 13

    Checklist
    ✅ Apply sun protection to your neck when going outside
    ✅ Moisturize your neck after washing your face or showering
    ✅ Avoid tilting your head down for long periods
    ✅ Avoid rubbing your neck skin harshly
    ✅ Avoid smoking and maintain a balanced lifestyle

    Can Home Care Alone Get Rid of Neck Wrinkles?

    It’s important to distinguish between fine lines made more visible by dryness and wrinkles that have already become deeply set.

    Home care refers to methods you can practice at home, such as moisturizing or massage.

    neck wrinkle care - image 14

    If fine lines look more pronounced because your skin is dry, they may appear less noticeable once your skin becomes hydrated after adequate moisturizing.

    However, wrinkles that have already become deeply set due to skin aging and structural changes are difficult to eliminate completely through home care alone, such as moisturizers or massage.

    Changes You May See With Consistent Care
    ✔ Fine lines and rough texture caused by dryness may be eased
    ✔ Aging-accelerating factors like UV exposure and friction can be reduced
    ✔ May help keep skin in a healthier overall condition

    Why You Should Care for Your Neck Just Like Your Face

    We tend to pay close attention to our facial skin while leaving the neck out of the routine almost entirely.

    But the neck is also continuously exposed to UV rays and outside conditions, and it’s an area where structure and elasticity change as we age.

    It’s enough to apply sunscreen to your neck whenever you apply it to your face, extend your moisturizer down to your neck after washing or showering, and cut back on prolonged head-down posture.

    Thinking of your face and neck as a single skincare zone is the most basic neck wrinkle care habit you can start in everyday life.

    neck wrinkle care - image 15

    If you’re curious about skin aging and collagen changes, you can find more detailed information on the Atelofill Collagen Skin Research Institute homepage.


    Frequently Asked Questions

    1. Can I use my facial sunscreen on my neck too?
    Generally, sunscreen made for the face can also be used on the neck. However, if you notice irritation or breakouts on your neck skin, stop use and check your skin’s condition.

    2. Do I need to use a neck-specific cream?
    A neck-specific product isn’t strictly necessary. If the moisturizer you’re already using suits your neck skin well, you can use it there too — consistent moisturizing and sun protection habits matter more than the specific product type.

    3. I’m in my 20s or 30s — does having neck wrinkles mean it’s aging?
    Not necessarily. Horizontal neck lines can appear even at a relatively young age, and various factors — skin characteristics, genetics, and repetitive neck movement or posture — can play a role.

    4. Once neck wrinkles form, are they permanent?
    It’s difficult to fully eliminate deep-set wrinkles with cosmetics or massage, but consistently maintaining sun protection, moisturizing, and good posture habits may help slow further deepening.


    References

    · The Korea Daily (LA), “The Secret to a Youthful Look Is Collagen… Declines 1% Every Year After Age 25,” The Korea Daily. View source
    · Lee Soon-yong, “UV Rays ‘Destroy Collagen and Elastin Fibers, Accelerating Skin Aging,’” Edaily, 2014. View source
    · Ministry of Food and Drug Safety (MFDS), “Sunscreen Works Better When Applied Correctly… What’s the Right Way to Use It?,” Korea Policy Briefing (korea.kr). View source
    · Jaseng Hospital of Korean Medicine, “Tilting Your Head to Look at Your Phone? Cervical Spine Load Up to 27kg,” Encyclopedia of Korean Medicine. View source


    This article is provided for general health information purposes only and is not a substitute for individual diagnosis or treatment. If you have symptoms, please consult a medical professional.

  • Get Rid of Nasolabial Folds: Do Exercise, Masks & Gua Sha Really Work? (3 Methods)

    Get Rid of Nasolabial Folds: Do Exercise, Masks & Gua Sha Really Work? (3 Methods)

    SummaryCan you really get rid of nasolabial folds with exercise, sheet masks, and gua sha alone? This guide covers what causes nasolabial folds, the real effects and limits of facial exercises, sheet masks, and gua sha massage, and practical at-home care methods you can try.

    Do you find yourself noticing the nasolabial folds running from beside your nose to the corners of your mouth every time you look in the mirror?

    Many people have tried all kinds of ways to get rid of nasolabial folds, from the classic spoon-in-mouth exercise to sheet masks and gua sha massage.

    But can self-care methods like these really make folds that have already formed disappear?

    how to get rid of nasolabial folds

    The short answer: exercise, masks, and gua sha alone are unlikely to fully get rid of nasolabial folds.

    This article covers why nasolabial folds form, the real effects and limits of exercise, masks, and gua sha, and realistic at-home care methods you can put into practice.

    Key Points
    ✔ Nasolabial folds result from a combination of factors, including reduced skin elasticity, collagen loss, and changes in facial volume
    ✔ Exercise, masks, and gua sha can help manage overall skin condition, but they’re unlikely to eliminate folds that have already deepened
    ✔ Excessive massage or facial exercises can actually irritate the skin

    Why Do Nasolabial Folds Form?

    image related to nasolabial folds 2

    The short answer: nasolabial folds aren’t simply creases caused by skin folding over.

    Nasolabial folds are lines that become more visible as the skin and soft tissue running from beside the nostrils to the corners of the mouth begin to sag.

    As we age, collagen and elastin in the skin decrease and elasticity drops, which makes it easier for skin creases to leave a lasting mark.

    On top of that, shifts in facial fat and soft tissue position, midface sagging, and changes in bone structure can make the nasolabial area look even deeper.

    image related to nasolabial folds 3

    The main causes of nasolabial folds include:

    • Skin aging and reduced elasticity
    • Collagen and elastin loss
    • Changes in facial volume and fat distribution
    • Midface tissue sagging
    • Repetitive facial expression habits
    • Photoaging from UV exposure
    • Rapid weight loss
    • Individual facial bone structure and genetic factors

    So if you’re looking into how to get rid of nasolabial folds, it helps to first understand what’s causing your folds to look deeper, rather than jumping straight to tightening the skin.


    Can You Get Rid of Nasolabial Folds With Exercise Alone?

    image related to nasolabial folds 4

    The short answer: facial exercises alone are unlikely to reverse nasolabial folds that have already deepened.

    Common methods include puffing out your cheeks, puckering your lips, and exaggeratedly mouthing “A-E-I-O-U.”

    Moving your facial muscles isn’t inherently bad — working muscles you don’t normally use can even create a temporary tightening sensation.

    But nasolabial folds aren’t caused by muscle weakness alone,

    so once skin elasticity and volume have already declined, exercise alone is unlikely to restore your skin to how it was before.

    In fact, puckering the mouth area too tightly or repeating the same expression over and over can cause the skin to keep folding in the same spot, leading to cumulative irritation.

    Caution
    ⚠ Repeating strong mouth-puckering exercises for long periods in an effort to get rid of nasolabial folds can actually make skin irritation worse
    ⚠ It’s safer to keep facial exercises light and gentle

    Do Sheet Masks and Gua Sha Really Help With Nasolabial Folds?

    image related to nasolabial folds 5

    The short answer: masks and gua sha are best thought of as hydration and skin-condition care, not as ways to eliminate the folds themselves.

    Sheet masks are a hydrating skin care method that supplies moisture to the skin, temporarily softening the look of fine lines caused by dryness.

    image related to nasolabial folds 6

    When skin is dry, the surface becomes rougher and fine lines look more pronounced,

    while adequate hydration can make the skin look noticeably smoother.

    However, a mask can’t reverse deeper volume loss or sagging happening beneath the surface.

    image related to nasolabial folds 7

    Gua sha works the same way.

    Gua sha or gentle massage can be useful for managing facial puffiness and tension,

    and right after a session your facial contour may look more defined, making nasolabial folds seem temporarily less visible.

    But this kind of change is unlikely to reflect an actual change in the skin’s underlying structure.

    image related to nasolabial folds 8

    Be especially careful about pressing hard or repeatedly pulling at the skin in an effort to get rid of nasolabial folds.

    Excessive pressure and friction can cause irritation, redness, and sensitivity.

    If you use a gua sha tool, it’s better to reduce friction with a cream or oil and work gently rather than scraping hard,

    and you should avoid vigorous massage if your skin already has breakouts or inflammation.


    What At-Home Care Can Help Manage Nasolabial Folds?

    image related to nasolabial folds 9

    You can’t get rid of nasolabial folds overnight, but lifestyle habits that slow down further deepening are genuinely worthwhile.

    Checklist
    ✅ Apply sunscreen before going outside year-round, and reapply during outdoor activities
    ✅ Moisturize right after cleansing, before skin has a chance to dry out, to balance hydration and oil
    ✅ Manage weight gradually instead of crash dieting
    ✅ Avoid rubbing or pulling the skin hard while cleansing or massaging
    ✅ Eat a balanced diet with protein, vitamins, and minerals, and get enough sleep

    image related to nasolabial folds 10

    Of these, UV exposure is considered one of the leading causes of aging, breaking down collagen and elastic fibers in the skin.

    And when weight drops significantly over a short period, facial subcutaneous fat and volume decrease along with it,

    which can make nasolabial folds or cheek hollowing look more pronounced than before — so it’s best to avoid rapid weight loss.

    If you’d like more information on managing your skin’s collagen condition, you can also check the Atelofill Collagen Skin Research Institute homepage.


    What If Nasolabial Folds Don’t Change Despite Exercise, Masks, and Gua Sha?

    image related to nasolabial folds 11

    It’s not unusual to see little to no change even after consistently doing nasolabial fold exercises, masks, or gua sha.

    That’s because nasolabial folds aren’t just a surface-level skin issue — reduced elasticity, volume loss, and shifts in tissue position all play a role together.

    The underlying causes also vary from person to person.

    For some, thin, less elastic skin makes the folds stand out; for others, reduced facial volume or bone structure can make them noticeable from a relatively young age.

    image related to nasolabial folds 12

    In Summary
    ✔ Sun protection, moisturizing, and healthy habits are the basics of managing skin aging
    ✔ Masks and gentle massage can be used as supplementary condition-care tools
    ✔ For folds that have already deepened, it’s important to take an approach suited to your current skin condition and its underlying causes

    Frequently Asked Questions

    image related to nasolabial folds 13

    1. Is it okay to do nasolabial fold exercises every day?
    Light facial exercises are fine, but exercises that repeatedly fold the skin forcefully or put excessive strain around the mouth in an attempt to erase folds aren’t recommended. Moving your facial muscles naturally and gently is enough.

    2. Will using a sheet mask every day improve nasolabial folds?
    Masks can help with hydration and skin condition, but that’s different from actually getting rid of folds that have already deepened. Recommended usage frequency varies by product, so it’s a good idea to check the label.

    3. Will continuously pushing up on nasolabial folds with gua sha make them go away?
    Right after gua sha, puffiness may go down and your facial contour may look more defined, but this isn’t considered a way to address the structural causes of nasolabial folds. Strong pressure and repeated friction can actually irritate the skin, so caution is needed.

    4. Can nasolabial folds appear even at a young age?
    Yes, they can. Factors like reduced facial volume, bone structure, or rapid weight changes can make the nasolabial area noticeable even in relatively young people.

    References

    · Miju Joongang Daily, “The Secret to Looking Youthful Is Collagen… Down 1% a Year After Age 25,” Miju Joongang Daily. Read more
    · Hidoc, “3 Causes That Break Down the Collagen That Supports Skin Elasticity,” Hidoc. Read more
    · KorMedi, “‘My Face Suddenly Looked Older After Losing Weight’… What’s This Dieting Side Effect That Accelerates Aging?,” KorMedi, 2026. Read more
    · Korea Health Log, “Gua Sha Facial Massage: The Real Reason Dermatologists Don’t Recommend It,” Korea Health Log. Read more

    This article is intended for general health information purposes only and is not a substitute for individual diagnosis or treatment. If you have symptoms, please consult a medical professional.

  • Sun Damaged Skin Symptoms: 5 Signs & Recovery Care

    Sun Damaged Skin Symptoms: 5 Signs & Recovery Care

    SummarySun damaged skin goes beyond a simple tan — it can lead to sunburn, a weakened skin barrier, and reduced elasticity. Here’s how to tell redness and blistering apart, how to cool and calm the skin, and the right after-sun skincare order to help restore your skin barrier.

    Have you ever come home from vacation, looked in the mirror, and been startled by what you saw?
    Your face is flushed and feels hot to the touch, but it’s easy to assume it will fade in a few days.

    Here’s the thing — these symptoms aren’t just a tan. They can be an early sign of sun damaged skin.
    Left unaddressed, this can weaken the skin barrier, drain moisture, and eventually lead to a loss of elasticity.

    sun damaged skin

    In this article, we’ll cover the common sun damaged skin symptoms, why they happen, and how to tell sunburn apart from mild skin irritation.
    We’ll also walk through step-by-step care — from cooling down skin heat early on to restoring your skin barrier after vacation.

    sun damaged skin illustration 2

    What Are Sun Damaged Skin Symptoms, and Why Does Skin Turn Red?

    To put it simply, sun damaged skin refers to a condition in which UV-exposed skin shows redness, heat, moisture loss, and barrier damage all at once.
    It’s a different concept from simply getting a tan.

    sun damaged skin illustration 3

    In summer, more outdoor activities and vacations naturally mean longer exposure to strong UV rays.
    UV light doesn’t just darken the skin — it can also trigger changes within the skin cells themselves.

    Key Points
    ✔ UV exposure can cause redness and a warm, heated feeling in the skin
    ✔ Moisture can be lost from the skin, weakening the skin barrier
    ✔ It may lead to hyperpigmentation and reduced skin elasticity
    ✔ Repeated exposure is considered one of the factors that can accelerate skin aging

    sun damaged skin illustration 4

    UV rays are broadly divided into UVA and UVB, and each affects the skin somewhat differently.

    Type Characteristics
    UVA Penetrates deep into the skin and may contribute to reduced elasticity and photoaging
    UVB Acts on the skin’s surface and is more likely to cause sunburn and redness

    Redness Is a Sign That an Inflammatory Response Has Begun

    sun damaged skin illustration 5

    It’s tempting to write off redness as just a tan, but it can actually signal that an inflammatory response has started.
    When skin is exposed to strong UV rays, blood vessels dilate to help repair the damaged cells.
    This process is what causes the redness, heat, and stinging you feel on your face.

    If symptoms are mild, they often improve within a day or two.

    However, continued UV exposure or a lack of proper care can weaken the skin barrier further and worsen moisture loss.


    How Can You Tell Sunburn Apart from Mild Skin Irritation?

    Not all post-vacation redness means you have a sunburn.
    That said, if symptoms are severe, it’s worth considering the possibility of sunburn.

    sun damaged skin illustration 6

    Sunburn is an acute inflammatory reaction of the skin caused by excessive UV exposure, and in severe cases it can involve blistering and pain.
    According to Korea Disease Control and Prevention Agency data, sunburn symptoms typically begin 3 to 6 hours after exposure.
    They tend to peak between 12 and 24 hours, then gradually fade over the following 3 to 7 days.

    Feature Mild Irritation Sunburn
    Skin color Slight redness Deep, intense redness
    Heat Mild Intense
    Pain Little to none Stinging and painful
    Blisters None May occur
    Recovery Improves within a few days Can take days to weeks

    If redness is accompanied by blistering or significant pain, sunburn is more likely than simple irritation.


    How Should You Manage Skin Heat and Pain in the Early Stage?

    If your skin feels hot and stings, the first step is to cool the skin down.
    Once the heat has settled, following up with hydration and soothing care can support recovery.

    sun damaged skin illustration 7

    Checklist
    ✅ Cool skin with lukewarm or cool water (never apply ice directly)
    ✅ Hydrate thoroughly with a moisturizing cream
    ✅ Pause scrubs, peels, high-strength vitamin C, and retinol products
    ✅ Drink enough water to help maintain skin hydration

    When skin is sun damaged, moisture is lost from the skin rapidly.

    That’s why soothing and hydration should be the top priority during this time.
    It’s best to hold off on active or functional products that could irritate the skin until it has stabilized.

    sun damaged skin illustration 8

    Precautions
    ⚠ Don’t pop blisters yourself or rub the skin roughly
    ⚠ Forcibly peeling off flaking skin can raise the risk of infection
    ⚠ If you notice oozing or widespread redness, see a doctor

    If blisters form, pain is severe, there’s oozing,
    or a large area of skin is red, an accurate diagnosis should take priority over self-care.
    If symptoms don’t improve, be sure to consult a physician.


    How Do You Restore Your Skin Barrier and Prevent Elasticity Loss After Vacation?

    Many people jump straight into brightening treatments or exfoliation right after vacation.

    But at this stage, the skin barrier is often already compromised. Barrier repair should come first.

    sun damaged skin illustration 9

    When the skin barrier weakens, the following changes can occur alongside it.

    Key Points
    ✔ Increased water evaporation makes skin dry out more easily
    ✔ Skin can become more sensitive and reactive to irritants
    ✔ Redness may linger longer than usual
    ✔ Skin texture can become rougher and less refined

    sun damaged skin illustration 10

    That’s why following the right order matters for after-sun skincare.
    Step 1: soothe skin heat → Step 2: hydrate thoroughly → Step 3: repair the skin barrier → Step 4: address brightening → Step 5: reintroduce active/functional products.

    What to Expect With Proper Care
    🟢 Following this order can help redness and heat gradually calm down
    🟢 Skin hydration may be restored and texture can become smoother
    🟢 Brightening and functional products may cause less irritation afterward

    Why Does Skin Lose Elasticity, and How Can You Minimize It?

    Collagen and elastin play a key role in maintaining skin elasticity.
    Repeated exposure to strong UV rays can reduce collagen levels and accelerate its breakdown in the skin.
    As a result, skin can lose firmness and fine lines may become more noticeable.

    sun damaged skin illustration 11

    In fact, domestic research has reported UV-related collagen loss and increased wrinkling.
    To help minimize these changes, use sunscreen consistently and wear a hat and sunglasses.
    It also helps to avoid prolonged outdoor exposure and support your skin with adequate water intake, regular sleep, and a balanced diet.

    If you’d like to support skin elasticity from within,
    you can also check out the Atelofill Collagen Skin Research Institute homepage for more information on skin barrier and elasticity care.

    sun damaged skin illustration 12

    While skin is still red and warm, it’s best to avoid exfoliation, vigorous massage, and potentially irritating active products.
    Soothe and hydrate the skin first, then gradually reintroduce active products once it has recovered.


    sun damaged skin illustration 13

    Sun damaged skin can lead not only to sunburn but also to a weakened skin barrier and reduced elasticity.
    If your skin feels hot and stings after vacation, focus on cooling, soothing, and hydrating it first.
    Consistent sun protection and proper after-sun care can go a long way toward keeping your skin healthy.

    Frequently Asked Questions

    sun damaged skin illustration 14

    1. Can I exfoliate right after getting sun damaged skin?
    If your skin is red or stinging, it’s best to avoid exfoliation. Wait until the skin barrier has stabilized, then reassess before proceeding.

    2. My skin still feels hot after vacation — is that normal?
    If the heat lingers, or is accompanied by pain, blisters, or oozing, it may not be simple irritation, so it’s best to see a doctor.

    3. When can I start using brightening products after sun exposure?
    It’s generally recommended to wait until redness and heat have subsided and the skin barrier has recovered to some degree.

    4. Should I wear sunscreen even on cloudy days?
    A significant amount of UV radiation is known to pass through clouds, so wearing sunscreen even on overcast days can help prevent sun damaged skin.


    References

    · Korea Disease Control and Prevention Agency, “Sunburn,” National Health Information Portal. View source
    · Seoul National University Hospital, “Sunburn,” SNUH Medical Information. View source
    · Korean Journal of Food Science and Technology, “Preventive Effect of Collagen Peptides on Skin Photoaging,” Korean Society of Food Science and Technology, 2009. View source

    This article is intended for general health information purposes only and is not a substitute for individual diagnosis or treatment. If you have symptoms, please consult a physician.