Human skin is the outermost part of the body. With a surface area of skin between about 1.6 square meters for a woman to 1.8 square meters for a man, make your skin and organs most widespread in the human body. However, the skin can be damaged, especially by the sun. Sunlight on the skin can cause skin cancer. The extent to which the sun’s harmful rays to the skin? How to protect your skin from dangerous sun rays?
Effect of Sunlight to Human
The sun is essential to life. Without the sun, then there is no life on earth. Sun contributes to the process of photosynthesis in plants. In addition, the sun also acts to stimulate the body to produce vitamin D, which serves to metabolize calcium, thus forming strong bones.
The sun produces radiation that reaches the earth’s surface. Solar radiation is composed of infrared rays and visible light and ultraviolet light within a radius of A and B (UVA and UVB). Fortunately, the atmosphere absorbs cosmic rays, gamma rays, and X-ray beam generated matahari.Radiasi ultraviolet or UV can cause skin damage, even permanent skin damage including skin cancer. Ultraviolet radiation (UV) can cause your skin to burn, and cause brown spots and thickening and dryness of skin. UV radiation can damage DNA, suppress immune system, and activate the chemicals in the body that can cause cancer. Another negative effect is premature aging.
Protecting Skin from the Sun
Your skin has a natural protection system is a layer of melanin. The more brown color of your skin is getting thicker layer of melanin in your skin, thus giving more protection for your skin. Therefore, among the African people getting skin cancer is very low because of their natural protective immune enough to block the ultraviolet radiation (UV). However, for those who are white have a thin layer of melanin. Therefore, the white skin of a person, the more vulnerable to ultraviolet radiation (UV).
Here are some practical ways to protect your skin from dangerous sun rays and reduce the risk of skin cancer.
- Limit time exposed to direct sunlight, especially between the hours of 10:00 until 16:00. Because at that ultraviolet radiation (UV) that are harmful are at its peak is when the sun is hot-hot.
- Check all your skin for any abnormalities or not at least every three months.
- Before doing activities outdoors, use sunscreen (UV protection), broad-spectrum SPF 15 or higher. Use a sunscreen that can also protect against UVA and UVB radiation (see the article Sunscreen for further explanation). Apply sunscreen to the skin surface about 20 minutes before you are exposed to sunlight, then apply again after 20 minutes of direct sunlight.
- Apply more sunscreen every two hours when outdoors, especially if you’re swimming or sweating. Sunscreen easily erased with sweat and also towels.
- Wear clothing that protects the skin as a hat with a wide mouth cap, sunglasses with UV protective lenses, long pants, long sleeves, or jackets.
- We recommend wearing clothes that knitting a meeting with a dark color because it gives more protection.
- Begin to protect the skin from an early age to teach your children about the dangers of the sun during the day.
- Avoid surfaces that reflect sunlight, such as water, sand, polish floors. Give extra attention to your skin if you are in the area.
- Wherever possible you shelter in place or activity that is not exposed to the scorching sun.