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2026-10-18

Diet or Skincare: Which Matters More for Your Skin? Advice from an Apgujeong Dermatologist

An Apgujeong dermatologist weighs diet against skincare, explaining why filling your personal gaps matters most and how to choose between Rejuran and laser treatments based on a professional skin diagnosis.

Diet or Skincare: Which Matters More for Your Skin? Advice from an Apgujeong Dermatologist
Which matters more for your skin: your eating habits or your skincare routine?
Diet or Skincare: Which Matters More for Your Skin? Advice from an Apgujeong Dermatologist
A dermatologist is asked: which affects your skin more, eating habits or skincare habits?

Hello, this is DM Dermatology Clinic. Whether diet or skincare has a bigger impact on skin health is always a difficult question to answer, since it sets up an extreme either/or choice. In general, though, it's more useful to fill in whatever you're lacking than to go to extremes. Much like how 1 + 1 can sometimes add up to 1.5, the right approach depends on your individual situation.

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DM Dermatology banner: 'Apgujeong dermatology specialist – answers to skin concerns, the standard in proper care.' Tel. 02.3445.0803
Skin Botox, Rejuran, and Laser Treatments

Skin Botox and Rejuran are widely known as common skin injection treatments. Rejuran is a treatment anyone can receive at any time, but some people feel they can't tell whether it's working. In general, people with dry or rough skin who have never had a treatment like this tend to notice a bigger effect. It's much like how a hungry person finds food more delicious. Rejuran can be even more helpful when it's timed well.

For anyone who sees less result from Rejuran or skin Botox, laser treatment is another option. In particular, if underlying dehydration persists even with moisturizer, or you struggle with tightness, enlarged pores, or fine lines, therapeutic treatments such as lasers or peels may be needed. Lasers can be as uncomfortable as injections, but with proper preparation, such as thoroughly applying numbing cream beforehand, most patients get through the procedure without much difficulty.

It's hard to know on your own which treatment is best for you, so it's important to talk things through thoroughly with an Apgujeong dermatologist before deciding. If you've had a good experience with Rejuran before, you may choose it again. If you're starting from scratch, both Rejuran and laser are options, and it's wise to decide after a consultation. If you can afford it, doing both is ideal, but most people don't even know their exact skin type, so the first step is to get your skin type professionally diagnosed by an Apgujeong dermatologist.

An accurate skin diagnosis requires a consultation with an Apgujeong dermatologist. Dermatologists consider a range of factors, including clinical symptoms, device-based skin analysis results, the appearance of the skin, and everyday habits such as cosmetic use and cleansing methods. Treatments that address the underlying cause of a problem, rather than simply managing the surface, tend to improve the skin at its root, and their results usually last much longer.

Lifestyle Habits and Diet That Affect Your Skin

Among the factors that affect skin health, diet and skincare both come down to finding what you're missing and filling that gap. For example, extreme dieting, being picky about food, or completely ignoring what you eat are all bad for your skin. Those who eat a lot should eat less, picky eaters should try a wider variety of foods, and those on extreme diets should start by getting enough protein. That's where treatment begins.

The same goes for daily habits. Cleansing too often or not at all can both cause problems. If you over-cleanse because of makeup, you may need to reduce how often you cleanse to keep your skin comfortable. If you skip cleansing because you don't realize how important it is, starting a proper cleansing routine can help calm your skin. The right approach for these habits should be worked out with an Apgujeong dermatologist.

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The dermatologist's answer: 'What matters is filling in what you lack!'
The Role of Dietary Supplements and the Importance of Clinical Treatment
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Next question: does taking health supplements (health functional foods) make your skin better?

Looking at the widely discussed use of health functional foods such as oral collagen and vitamin C, most people today are not nutritionally deficient. In 21st-century Korea, apart from those on extreme diets, the average person generally gets adequate nutrition.

In fact, health functional foods are not the first choice for solving skin problems. Clinical treatments take time and money, and many people avoid them because they hurt, so they often turn to home care or health supplements that are easy to do at home for peace of mind. But it's clinical treatment that actually changes results. Home care and supplements work best and are most cost-effective when they're combined with clinical treatment in a supporting role.

Three Key Tips for Healthy Skin

Here are three key tips for healthy skin. First, cleanse properly. Second, get plenty of rest. Third, see a good dermatologist.

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DM Dermatology: open weekdays and Saturdays 10am–7pm (lunch 1–2pm), Sundays/holidays by appointment; 100 m from Apgujeong Station Exit 5.
DM Dermatology Clinic 4th Floor, 158 Apgujeong-ro, Gangnam-gu, Seoul, DM Dermatology Clinic Check in on this blog More posts about this place
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Notice: this post shares medical information per Korea's Medical Service Act. Any procedure may cause side effects; consult a specialist first.
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Inside the clinic: reception desk, bright lobby and a waiting lounge with sofas.

Frequently Asked Questions

Which matters more for skin health: diet or skincare?

Rather than making extreme choices, it's more important to fill in whatever you're lacking. Extreme dieting and picky eating are bad for your skin, and cleansing too much or not at all can also cause problems.

Can anyone get Rejuran?

Rejuran is presented as a treatment anyone can receive, but results can feel different from person to person. People with dry or rough skin who have never had a treatment like this tend to notice a bigger effect, and it may help if it's done at the right time.

What should I do if skin Botox or Rejuran doesn't give enough results?

You can consider other treatments, such as lasers. If underlying dehydration persists even with moisturizer, or you have dryness, enlarged pores, or fine lines, therapeutic treatments such as lasers or peels may be needed.

Is laser treatment very painful?

Laser treatment can be uncomfortable, but with proper preparation, such as thoroughly applying numbing cream beforehand, most patients can get through it without much difficulty.

How can I find out my skin type?

It's hard to determine on your own, so the first step is a professional diagnosis from a dermatologist. Dermatologists assess your skin by considering clinical symptoms, device-based skin analysis, skin appearance, and lifestyle factors such as cosmetic use and cleansing methods.

Can health functional foods alone solve skin problems?

Health functional foods are not the first choice for solving skin problems. Clinical treatment is what actually changes results, and home care or supplements are most effective when used as a supporting complement to clinical treatment.

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