How to Choose a Sunscreen, as Told by Im Eui-seok Theme Dermatology

How to Choose a Sunscreen

Sunscreen is an essential product used throughout the four seasons, and without saying much, many people already know how important it is. Sunlight can cause skin aging and wrinkles, and it can also lead to various problems such as skin discoloration, increased keratin buildup, and damage to the skin’s immune system, so using sunscreen is important.

Types of ultraviolet rays

The sunlight we encounter every day is divided into UVA, UVB, and UVC, and each type affects the skin differently.

UVC: Light that is partially absorbed by the ozone layer and does not cause special problems if it does not adversely affect our bodies.

UVA: Light that is not fully absorbed by the ozone layer. It causes skin aging by continuously damaging the skin. By stimulating melanin pigment, it is a major cause of age spots and fine wrinkles.

UVB: Light that is not fully absorbed by the ozone layer, which damages human skin and can cause various skin diseases. UVB is the light that tans our skin dark.

Ultraviolet rays do not damage the skin all at once; they accumulate over a long period of time while affecting the skin and eventually cause damage. As the body ages, the symptoms become more noticeable, and they can be further worsened by the effects of fine dust, which is becoming a major issue these days. The ozone gas in fine dust reduces antioxidant enzymes in the skin, promoting skin aging, and since a higher UV index accelerates skin aging even more, ultraviolet rays can also cause skin diseases in addition to skin aging, making them a health concern. That is why using sunscreen products regularly is a way to protect not only against skin aging but also against skin health problems.

How to use sunscreen effectively!

Even though the importance of sunscreen is clear, consumers often have difficulty figuring out which products are suitable for them and which ones they should use because there are so many different types. Today, we will talk about which products are good to use depending on skin type and season, as well as the usage methods and pros and cons according to product texture.

1. Use products that match your skin type

Oily skin: For oily skin, products without oil are recommended because sebum production is high. They can also help prevent an oily feel or triggering breakouts.

Dry skin: For those with dry skin, cream- or balm-type products that contain moisturizing ingredients are good. They are helpful because they can provide sun protection while maintaining hydration.

Sensitive skin: For those with sensitive skin, chemical ingredients in sunscreen may cause skin trouble or skin conditions, so it is better to check whether synthetic colorants, preservatives, or other additives are included before using it. Even if the spreadability is less ideal, it is better to use a product that does not cause skin problems, and it is best to avoid products containing silicone ingredients that may clog pores.

2. How to use sunscreen according to the season!

Winter: Many people think sunscreen is unnecessary in winter because ultraviolet rays are not strong, but UVA, which directly affects wrinkles and skin aging, is actually strongest in winter, not summer. In addition, UVA has a longer wavelength in winter and penetrates deep into the dermis, so it is better to use a product with a high UVA protection level in winter.

Summer: In hot weather and during summer, when UVB is strong, it is better to choose a product with a high SPF value. UVB has a weaker wavelength than UVA and does not penetrate deep into the skin, but because exposure is greater in summer, its energy increases and it can cause sunburn, so it is better to use a product with a high UVB protection level in summer.

The PA value shown on sunscreen refers to UVA protection, and the SPF value refers to UVB protection, so you can check the protection levels according to the season before using the product.

3. How to use according to product form and texture!

Sun lotion / sun cream: Sunscreens in lotion form spread well and feel comfortable to use, but their protection level is not very high and their wear time is short, so they are good for everyday use when outdoor activity is limited. They are also convenient to use when outdoor activity on days with strong ultraviolet rays leaves a large area of the body exposed, such as the arms and legs.

Sun gel: Gel-type sunscreens are smoother and more fluid than lotion or cream products, making them convenient and fairly long-lasting, but they can feel sticky. They are ideal for those who want to avoid the white cast of sun cream and prefer a lightweight texture.

Sun spray: Spray types are convenient because you only need to spray them. They can be used like a mist to reapply sun cream or over makeup, making them easy to use on large areas, but their sun protection may be weaker than other products.

Sun stick: Easy to carry and highly effective, it is good for use on days with lots of outdoor activity. It can be applied concentratedly to the areas of the body that need sun protection, and it is comfortable and simple to use, but because it comes in stick form, it is difficult to apply to large areas such as the arms and legs.

Today, we talked in detail about how to use sunscreen and the pros and cons of each product, and I hope this was helpful. Sunlight is an indispensable part of our lives, but it can cause various problems such as skin damage, so taking thorough care of your own skin is important. With proper sunscreen use, you can keep beautiful skin until age 100, and if you have skin damage caused by ultraviolet rays, please contact our clinic. Im Eui-seok Theme Dermatology will always be with you for beautiful skin.