Skin Care Information: A Practical Guide to Clear Skin That Shines Even in the Heat

Skin care information,

A practical guide

for clear skin that shines even in the heat!

Hello. This is Jamsil Gounsesang Dermatology :)

Every summer, skin that was usually fine suddenly turns shiny, pores look uneven, and makeup feels like it can’t make it through the day... Everyone has had the thought, “Was it like this just yesterday?”

On top of that, the moment you go outside, your face feels hot in no time, and as sweat starts running down your forehead, small breakouts often appear before you know it. In summer like this, skin becomes more sensitive easily, and you may even feel that the more products you apply, the more uncomfortable your skin becomes.

In fact, under strong ultraviolet rays, collagen in the dermis slowly breaks down, causing a sharp loss of skin elasticity, and sweat and sebum are secreted at the same time, blocking pores. As a result, even smaller pimples may form, or makeup may float on the skin in an instant and bother you all day long. Simply layering moisturizer or toner is not enough to handle all these growing concerns. That is why, during this season, you need a systematic routine that starts with understanding how the skin environment changes and can care for the underlying causes.

From sunscreen, proper cleansing, appropriate moisturizing, balancing oil and moisture, essential nutrient intake, soothing irritated skin, customized care by skin type, and even small changes in daily habits, you can reverse the idea that “summer always ruins the skin.” In this post, I’ll explain eight key care points, so if you try them step by step, you may find your skin becoming smoother and more elastic before you know it. If you want to feel like, “Today is fine, I’m confident,” even in hot weather, start following along now.

1. Main causes of summer skin concerns

The reasons skin becomes sensitive so easily in summer can be summarized into four main points.

First, strong ultraviolet rays: UVA penetrates deep into the dermis, destroying collagen and elastin, while UVB damages the epidermis, causing melasma, freckles, and hyperpigmentation.

Second, in hot and humid weather, sweat and sebum are secreted excessively, causing waste buildup in pores and potentially leading to inflammatory acne or dermatitis.

Third, the salt and chlorine in seawater and pool water strip away the skin’s natural protective barrier, accelerating moisture loss, creating dead skin cells, and increasing irritation.

Fourth, when sand, dust, and pollutants stick to the skin, friction and inflammatory responses occur, making skin texture rougher and pores more noticeable.

These combined stresses make the skin more sensitive in summer and contribute to reduced elasticity.

2. Sunscreen protection that must be followed

When sunlight suddenly pours brightly outside the window, do you feel your skin getting hot?

At times like this, the first thing to think about is sunscreen protection. Ultraviolet rays are invisible, so they are easy to overlook, but because they can slowly destroy collagen in the skin and cause hyperpigmentation, preparing in advance is important.

First, when choosing a product, select an SPF between 30 and 50. SPF 30 blocks about 97% of UVB, and SPF 50 blocks about 98%. The higher the number, the slightly stronger the protection, but choosing a number that is unnecessarily high may leave more residue on the skin and feel heavy, so for people who are often outdoors, SPF 50 is generally an acceptable choice.

And a PA rating of PA+++ or higher is good. This indicates how much UVA, which penetrates deep into the skin and destroys collagen, is blocked. A PA+++ product can be expected to provide sufficient protection for both daily exposure and outdoor activities.

The timing of application is also very important. About 20 minutes before going বাইরে, spread it evenly not only on the face but also on the neck, behind the ears, and the backs of the hands—any area that will be exposed to sunlight. For an adult, the amount needed for the entire face is about 1/4 teaspoon (1.2 mL). If you dispense it onto the back of your hand first and then cover the face and exposed areas once, that is about the right amount. Don’t forget easy-to-miss areas like behind the ears, the sides of the neck, the backs of the hands, and even above the ankles; that is the key to maintaining effectiveness.

One application is not the end. The protective layer on the skin can easily wear off over time due to sweat, sebum, or moisture after water activities, so while outdoors you should reapply every 2 to 3 hours. In particular, before and after swimming, or after sweating heavily from exercise, it is recommended to lightly dry off any remaining moisture on the skin and apply a fresh layer of sunscreen.

Lastly, applying sunscreen alone may not be enough, so try using physical protection as well. Wearing a wide-brimmed hat can shade the face and neck at the same time, and sunglasses with UV protection help protect the skin around the eyes. Also, wearing long-sleeved clothing with good ventilation reduces sun exposure to large areas such as the arms and shoulders, making sun protection much more effective. Adding these small habits can be a big help in keeping the skin healthy under the hot sun.

3. Cleansing to remove impurities from pores without irritation

In summer, you need to remove excess sebum, sweat, and makeup residue every day to prevent clogged pores and acne.

1. Choose a gentle cleanser : Twice a day, in the morning and evening, lightly double cleanse using lukewarm water (30–35°C) and a gentle water-based foam cleanser or gel cleanser. Hot water or strong oil cleansers can overly dry the skin surface and, in turn, promote excess sebum production, so it is better to avoid them.

2. Chemical exfoliation : About once or twice a week, use a chemical exfoliant containing AHA (such as glycolic acid) or BHA (such as salicylic acid) to gently dissolve dead skin cells and impurities inside the pores. Physical scrubs can be irritating if you have acne or inflamed areas, so caution is needed.

3. Wash your face immediately after sweating : After outdoor exercise or heavy sweating, if you do not rinse quickly with water, the salt and impurities left on the skin can cause irritation and lead to breakouts.

4. Restoring oil-water balance and strengthening moisture

When air conditioning blows on your skin for a long time, you may feel a tightness as if your skin is gasping.

When you think, “It’s summer, so why does my skin feel this tight?” it may be a sign that the balance of moisture and oil in your skin has been disrupted. With more time spent in cooling environments, skin often ends up oily on the outside but dry on the inside. At times like this, simply applying a light toner is not enough. To keep your skin moisturized without inner tightness even in summer, you need to restore the oil-water balance and carefully add suitable moisture.

First, try choosing a gel- or lotion-type moisturizer. During this season, products with less oil and enough hydration are more suitable than heavy creams. For example, a lightweight gel moisturizer or a fresh lotion-type moisturizer can cover the skin surface without stickiness while also preventing inner tightness. In particular, because sweat and sebum increase in summer and can irritate pores, it is important to choose a low- irritation product with little alcohol and few artificial fragrances. It absorbs comfortably even into sensitive summer skin, leaving only moisture behind across the face.

But if you still think, “It still feels tight...” try using a small amount of face oil. After the oil-water balance has been significantly disrupted in summer, the skin needs a barrier function that ordinary moisturizers alone may not provide. At this point, applying a tiny amount of face oil such as tamanu oil can surprisingly relieve inner tightness. Tamanu oil contains a balanced ratio of linolenic acid and oleic acid, helping even oily skin control excess sebum while also addressing inner dryness.

In particular, the coumarin in tamanu oil has strong antioxidant and anti- inflammatory effects, helping delay skin aging caused by ultraviolet rays; calophyllic acid supports moisturizing and soothing; and calophyllolide helps reduce inflammation and supports regeneration, allowing summer-irritated skin to recover more quickly.

However, even natural ingredients require caution in some cases. If you have a nut allergy or seborrheic acne, you should test a small amount on the skin before use. Also, tamanu oil has almost no photosensitizing reaction, but to prevent any possible increase in UV sensitivity, it is advisable to apply only a small amount at night. That way, your face will not feel overheated in the morning sunlight, and your skin will have enough time to regenerate overnight.

If you feel dry in summer, first cover the skin surface with a light gel or lotion moisturizer to keep moisture from escaping. Then add just one or two drops of tamanu oil on top, and you can feel the skin staying light and fresh while still being moisturized deep down. This simple habit of restoring the oil-water balance and strengthening moisture will help tighten pores and lead you to smoother, more elastic summer skin.

5. A healthy solution that fills the skin from within through nutrition

Summer skin care is not enough with external care alone.

To block the attack of free radicals created by ultraviolet rays and hot, humid conditions, you need to build a strong defense from inside the body first. At this time, the first thing to pay attention to is consuming antioxidant-rich foods.

Eating berries such as blueberries and raspberries, as well as fruits and vegetables rich in vitamins C and E like kiwi and bell peppers, helps neutralize free radicals and slow the breakdown of collagen. Maintaining a diet rich in antioxidants lets you feel healthy radiance rising from within your skin.

Omega-3 fatty acids also play a very important role.

Frequent consumption of foods rich in EPA and DHA, such as salmon, mackerel, walnuts, and flaxseed, can help reduce inflammatory responses in the skin and strengthen the damaged skin barrier, protecting the skin from ultraviolet rays and external irritation. In fact, consistently maintaining a diet rich in omega-3 fatty acids can make the skin feel more resilient, with less redness and greater stability even under summer stress.

The importance of drinking water cannot be overstated. If you make it a habit to drink enough water—about 1.5 to 2 liters per day—it helps maintain the body’s moisture balance, allowing skin cells to stay hydrated and preserve elasticity. In particular, the longer you spend under air conditioning, the more easily moisture in the body evaporates, so if you keep a water bottle beside your chair and sip it little by little, your skin will stay smoother and more vibrant.

6. Cooling and soothing care to minimize aftereffects of inflammation

Even so, when inflammation is unavoidable, quick soothing care is needed.

If redness appears on the face or small breakouts show up from sunlight, sweat, or seawater irritation, try using a cooling gel or mask. Leave a cooling gel containing aloe vera or azulene on the face for about 10 minutes, then rest for 5 minutes and repeat. As the skin temperature drops, inflammatory responses are eased and blood flow in the dermis stabilizes. You can directly feel the cool comfort as the skin surface settles down.

If you want faster recovery, you may consider a dermatology procedure. In particular, regenerative laser treatments give the dermis a gentle stimulus to promote collagen regeneration. As inflammation subsides, the skin texture can feel noticeably softer, and elasticity may gradually return.

7. Summer care by skin type

In summer, care tailored to your skin type is essential.

1. Oily skin : Oily skin, which is prone to excess shine, can easily develop clogged pores in summer when temperature and humidity are high due to increased sebum production. In this case, minimize the amount of cosmetics you use as much as possible, use toner and essence with low oil content, and gently remove sebum with blotting paper whenever needed to prevent clogged pores. However, cleansing products with strong cleansing power can damage the skin barrier and actually promote more sebum production, so they should be avoided.

2. Dry skin : Even in summer, skin can become dry easily from air conditioning. Moisturizers should be in low-viscosity gel or lotion form, and the number of products used should be minimized so that you lightly replenish moisture rather than layering thick creams. Along with drinking water frequently to maintain the body’s moisture balance, using cooling packs or cooling gels to lower skin temperature will help reduce tightness and keep the skin comfortable.

8. Skin elasticity completed through daily habits

To maintain skin elasticity properly, good cosmetics or procedures alone are not enough; daily habits must support them.

First, enough sleep is very important. In our body, growth hormone is secreted most actively between 10 p.m. and 2 a.m., helping regenerate damaged skin cells and support collagen production, so you should sleep deeply during this time. Try to get at least 7 hours of quality sleep.

Managing stress is also essential. When stress builds up, secretion of the hormone cortisol increases, making it more likely for collagen to break down. Activities that relax both body and mind, such as yoga or meditation, along with light walks or short breathing exercises, help prevent stress from accumulating and greatly support maintaining skin elasticity.

If exercise feels burdensome because of the summer heat, choose light activity. Avoid the hottest time of day, and even a walk or some stretching in the relatively cool morning or evening is enough. Moving your body lightly like this promotes blood circulation, allowing oxygen and nutrients to be delivered more smoothly to the skin, which in turn increases collagen synthesis and makes the skin much firmer.

Lastly, you should create an environment that does not irritate the skin. To minimize sweat and friction, wear loose cotton clothing, and keep the indoor temperature around 26–28°C with air conditioning or a fan. If the temperature is too low, the skin may become excessively dry, and if it is too high, sweat and sebum production may increase and trigger breakouts. Paying attention to these small details throughout daily life can help you experience skin that becomes smoother and more resilient from within even during the hot summer.

Skin firmness completed in 8 steps during the heat

To summarize summer skin care information: First, prevent collagen breakdown with sunscreen; second, remove impurities in the pores cleanly with proper cleansing; third, follow precautions when receiving skin booster procedures to help damaged skin recover; and fourth, minimize the aftereffects of inflammation with cooling and soothing care. Next, fill the skin from within through nutrition, prevent summer skin concerns with customized care by skin type, and finally maintain skin health for the long term through lifestyle management.

If you consistently practice these eight methods, you can keep your skin firm and clear even from this summer’s heat and humidity. Build up small daily efforts based on the skin care information shared here. Thank you!

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