Ultimate guide to sun protection at high altitudes for healthy skin

Author: Suo Zhen, Head Nurse of the Outpatient Department at Tibet Fuyuan Hospital. Review: Tian Peng, Deputy Chief Physician at the Lifelong Health Management Center, Tibet Fukang Hospital.

Title: Ultimate guide to sun protection at high altitudes for healthy skin Introduction: High UV intensity in plateaus demands sun protection. This article covers methods to reduce sunburn risk and raise awareness. Keywords: ['Skin health', 'Travel Health'] Main text: When it comes to plateau tourism, many people fall into the misconception that "if it's not hot, there’s no UV radiation"—but the reality is quite the opposite. In plateau areas, the altitude is high and the air is thin, which significantly reduces the atmosphere's filtering effect on ultraviolet (UV) rays. The intensity of UV radiation can be 2 to 3 times greater than that in plain regions. Even when the temperature feels cool, the skin may be undergoing a strong, "invisible attack" from UV rays. This can lead to mild effects like tanning or reddening of the skin, or in severe cases, sunburn, and even an increased risk of skin aging and photodamage. Therefore, how can one effectively protect themselves from the sun during plateau travel? And what should one do if they accidentally get sunburned? 1. Core of Highland Sunscreen: Remember the "ABCD" Principle. The "lethality" of ultraviolet rays at high altitudes far exceeds expectations, and relying on a single sun protection method is inadequate. It is necessary to follow the comprehensive principles of "ABCD," employing layered protection to minimize damage as much as possible. 1. Avoid: Stay away from the "peak hours" of ultraviolet rays. The most direct and effective way to protect against sun exposure is to avoid it altogether. In plateau areas, the intensity of ultraviolet rays varies significantly throughout the day, with the strongest radiation occurring between 10 AM and 2 PM. During this time, the angle of sunlight is direct, and skin that is exposed for just 10 to 20 minutes may show signs of sunburn. If the schedule allows, it is recommended to try to avoid going out during that period; if it is necessary to go out, prioritize routes that offer shade (such as areas along mountain shadows or beneath trees) to minimize the time your skin is directly exposed to sunlight. 2. Block (Shielding): Physical protection is the "first line of defense." The protective effect of physical sunblock is stable and free from chemical irritation, making it the mainstay for sun protection in high-altitude areas, with its protective abilities even surpassing some sunscreens. It is recommended to be well-prepared in terms of clothing and accessories: 3. Cream (Sunscreen): Choose the right one, apply enough, and reapply properly to ensure chemical protection is complete. Physical barriers cannot cover all exposed areas, so it is necessary to use sunscreen to create "dual protection." When selecting and using sunscreen in high-altitude environments, it is important to pay attention to the following points: Suggestions for Choosing Sunscreen Cosmetics in Different Environments When selecting sunscreen cosmetics, it's important to consider the environment in which you will be using them. Here are some tailored recommendations for various settings: 1. Outdoor Activities: For activities such as hiking, swimming, or sports, opt for water-resistant and broad-spectrum sunscreens with an SPF of at least 30. Look for formulas that contain zinc oxide or titanium dioxide for better physical protection. 2. Urban Environment: In city settings where pollution can be a concern, choose sunscreens that also offer antioxidant protection. These formulations help combat free radicals from environmental stressors. Lightweight, non-comedogenic options are ideal for daily use under makeup. 3. Tropical Climates: If you are in a humid or hot location, consider gel-based sunscreens that absorb quickly and leave a matte finish. An SPF of 50 or higher is recommended due to increased sun exposure. 4. Cold Weather: Even in winter, UV rays can harm the skin, especially in snowy areas. Look for a moisturizing sunscreen that provides hydration while protecting against UVA and UVB rays. 5. Sensitive Skin: For those with sensitive skin, mineral sunscreens are often recommended as they are less likely to cause irritation. Look for fragrance-free options with soothing ingredients. 6. Daily Use: If you are looking for a product for everyday use, consider a tinted moisturizer or BB cream that includes SPF. This can provide light coverage while ensuring sun protection. By understanding the specific demands of your environment, you can make informed choices that protect your skin effectively. 4. Diet: Eating the right foods to help enhance the skin's resilience against sun exposure. Although diet cannot directly "prevent sunburn," a reasonable combination of foods can help enhance the skin's ability to resist ultraviolet rays and reduce light damage. Sunburned by accident? Four scientific steps to alleviate damage and promote healing. In medicine, sunburn is referred to as "sunlight dermatitis," which is an inflammatory response that occurs after the skin is excessively exposed to ultraviolet rays. It is important to manage the symptoms promptly to avoid worsening the damage. Symptoms of sunburn typically appear within a few hours to one day after sun exposure. Mild sunburn is characterized by reddened skin, a burning sensation, and slight pain. Moderate sunburn presents as noticeable redness and swelling, with sharper pain when touched. Severe sunburn may result in blisters filled with clear fluid, peeling skin, and in some cases, can be accompanied by systemic symptoms such as headaches, fever, nausea, and vomiting. Four-step method for scientifically dealing with sunburn. The first step: immediately avoid direct sunlight to prevent prolonged damage. The primary task after getting sunburned is to remove the skin from the ultraviolet environment—get indoors or find a shaded area (such as under a tree or in a tent) as soon as possible. If it's not possible to leave immediately, it is necessary to completely cover the sunburned areas with clothing, a sun umbrella, or similar items to avoid further exposure and aggravation of the inflammation, while also reducing the risk of skin infection. Step 2: Apply a cold compress to reduce temperature and alleviate burning and pain. Cold compresses are a key step in alleviating discomfort after sunburn, as they can constrict capillaries, reduce redness and swelling, and lower skin temperature. Wrap an ice pack (or a towel soaked in cold water) in a clean towel and apply it to the sunburned area for 15-20 minutes at a time, repeating every 1-2 hours. Make sure the ice pack does not come into direct contact with the skin; it should be wrapped in a towel (about 1-2 layers thick) to prevent frostbite. Step three: Symptom-based nursing to promote skin repair. Depending on the severity of the sunburn, different care methods are required to avoid inappropriate actions that may hinder healing. Step four: Supplement hydration and protect the wound to prevent infection and dehydration. Sunburn can cause a significant loss of moisture from the skin, which may lead to dryness, flaking, and even dehydration. III. Sun Protection on the Plateau: Ensure Comprehensive Protection by Following These Four Steps. In addition to the core "ABCD" principles and sunburn treatment methods, these detailed suggestions can further enhance sun protection effectiveness and reduce the risk of sunburn: The blue skies, snow-capped mountains, and lakes of the plateau are captivating, but the "threat" of strong ultraviolet rays should not be overlooked. Proper sun protection is not only to avoid tanning and sunburn but also to safeguard your skin's health, allowing for a worry-free journey and providing peace of mind. May this guide help you enjoy the beauty of the plateau safely and create pleasant travel memories. Guo Longwei, Yuan Xinrong. Choosing the Right Sunscreen to Avoid UV Rays. Food and Health. June 2023. Ye Yuxia. Don't Fall into the Sunscreen Trap. Family Medicine. November 2023. Sunburn. Nutrition and Health Care for Infants and Young Children. June 2012. Xia Yingye. Remember the ABCD Principle for Scientific Sun Protection. Health Expo. June 2023. Liu Wei. Sun-induced dermatitis. Baidu Health Encyclopedia.