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How to use sunscreen

2023.07.11 04:43
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High SPF is a NO; you should reapply every three hours instead. It is a misconception to think that a high SPF (Sun Protection Factor) indicates superior UV protection. A high SPF means a higher concentration of harmful benzene ring compounds. In fact, a higher SPF can be more dangerous. While an SPF of 1 blocks UV rays for about 15 to 20 minutes, an SPF of 20 blocks them for 300 minutes, or approximately 5 hours. It is safer to use a sunscreen with a lower SPF and reapply it every three hours.

2. Selecting Sunscreen According to Skin Type If you have sensitive skin, such as that affected by atopic dermatitis, you should choose a sunscreen that is free of PABA, which frequently causes allergic reactions. Since chemical sunscreens can cause eye irritation or skin itching, you should select a physical sunscreen. Additionally, for acne-prone skin prone to frequent breakouts or oily skin, you should use a sunscreen containing oil-free or non-comedogenic ingredients. For severely dry skin that dries out easily, you should choose a product with a high moisture content.

3. Apply an appropriate amount of sunscreen 30 minutes before going outside. When using sunscreen, controlling the amount is the most important factor. Although the recommended dosage of 2 mg/cm² (the size of three peas) is quite a large amount, applying too little will not provide UV protection, so you should apply the appropriate amount and allow time for it to be fully absorbed. In the case of chemical sunscreens, the ingredients require a certain amount of time after application to undergo the chemical reaction for UV protection, so it is best to apply them 30 minutes before going out. However, since physical sunscreens work by forming a barrier on the skin, you can go outside immediately after application.

4. Be sure to cleanse after use. You must wash off sunscreen thoroughly to ensure no residue remains. There is absolutely no benefit to leaving sunscreen residue on your skin. You must wipe it off completely as soon as you return home. Thorough cleansing is essential because leftover sunscreen can mix with skin impurities and cause breakouts.

5. Do not blindly trust sunscreen; use physical barriers. There are ways to block UV rays using masks, clothing, or hats without applying chemical sunscreens to your skin. It is best to choose a method that is safer for you. Instead of relying solely on sunscreen, it is much better to use physical barriers—such as wide-brimmed hats or parasols—in conjunction with sunscreen.

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Comments 31
  • 수우이
    선크림을 늘 바르니까 이 글 정말 관심있게 열심히 읽었어요 정보 감사해요. 잘 안지킨 것도 있고 몰랐던 것도 있었네요  그리고 알지만 어쩔수 었었던 것도 있고요. 
    • 서간호사
      Author
      이런날씨에는 진짜 선크림 필수인것 같아요
  • 복숭아1234
    자외선차단제 사용법 유용한것들이네요
    • 서간호사
      Author
      뷰티는 끝이 없네요 피부에 다 연관이 되어서
  • 서브오이
    선크림 종류나 지수에 따라 다르군요 덕분에 배워요
    • 서간호사
      Author
      다 똑같은게 아니였더라구요
  • 하늘비경
    선크림도 하고 나서 꼼꼼한 세안이 중요한것 같아요
    • 서간호사
      Author
      네 진짜 그말이 맞는것 같아요
  • 초코붕어빵
    양산 선크림 콤보면 걱정없을것같아요~
    • 서간호사
      Author
      아 한번 찾아볼께요 양산 선크림
  • jjo1343303
    좋은 정보 감사합니다 ㅎㅎ
    • 서간호사
      Author
      아닙니다 저도 배우는데요
  • 오이보스
    덧바르기가 참 어려운것 같아요ㅠㅠ알면서도..
    • 서간호사
      Author
      알면서도 하기가 진짜 힘드네요
  • dbrhd121288
    spf지수가 높은게 좋은건지 알았는데..ㅠㅠ
    • 서간호사
      Author
      저도요 높은게 좋은건지 알았어요
  • oursummer
    상세한 설명법 도움이 됐습니다.
    • 서간호사
      Author
      도움이 되었다면 다행이네요
  • 아니제가요
    자외선차단제 사용방법 잘 보고 가요~
    • 서간호사
      Author
      다행이네요 도움되시기를
  • 크리스마스나무
    ㄲ꼼꼼한 클렌징 필수인데 쉽지 않네요
    • 서간호사
      Author
      말처럼 진짜 쉽지가 않네요
  • 티앙팡
    무조건 50이상인것만 샀는데
다음 썬크림살때 참고해야겠어여 
정보 감사합니다!
    • 서간호사
      Author
      저도 다음 썬크림 살때 참고할려구요
  • 고양양이
    우와 정말 자세한 정보 감사합니다
  • 딱복이
    저도 그래서 양산은 꼭 들고 다녀요~ 선글라스도 꼭 써야 좋겠더라고요
  • 루미큐브
    선크림 열심히 잘 발라야겠어요
  • 유저라니
    ㅎㅎㅎ자외선 차단제도 자주 바르고 양산도 잘 챙기는게 좋겠네요~
  • 문어얌얌
    SPF가 높은거보단 적당한걸로 자주바르는게 좋군요 
  • kk파우치
    유용한 글이네요 고맙습니다
  • 2민트홀릭
    자외선 차단제 사용법 감사해요 잘 봤어요