-Cosmopolitan: How do you block ultraviolet rays?
However healthy the skin is, frequent exposure to ultraviolet rays and heat will make the skin lose its glow and make it darker. As the temperature goes up, the ultraviolet also gets stronger these days. Are you aware that how much ultraviolet you block determines your future facial appearance?
Let’s learn more closely about “Ultraviolet Rays Blocking,” what we all think we know but are often confused.
Q. A parasol, a hat, sunglasses, UV sun block, and clothes – what of these is the most effective in blocking UV ray?
A. The most fundamental and effective way is to apply UV sunblock. Therefore, it is important to use a sunblock as a default, and use other methods according to the situational needs. UV sunblock can block direct light, reflected light, and scattered light, so it should be used devotedly at all times; when you are expected to exposed to direct sunlight during the summer, also use either a parasol or a hat, in order to multiply the effect. UV-coated parasol can block about 70% of UV ray, but it does not block reflected light; it is recommended to use sunglasses, a hat, or UV sunblock additionally. Sunglasses not only help with blocking UV ray from being exposed to one’s eyes during outdoor activities, but they also help with preventing fine lines and pigmentation diseases around the eyes. However, when purchasing sunglasses, one must check if they include UV-blocking features. One must also be minded that the color of the lens indicates different function. For driving, choose brown color, for it broadens and clarifies the sight. When visiting a crowded area, such as beaches, green color helps with relieving eye fatigue. Many people prefer grey color, as it brings each color clearly.
Q. Is applying sunblock thinly all it takes?
A. The most effective way to prevent UV ray is to apply UV sunblock. However, the amount of sunblock people usually apply is about 1/3 to 1/2 of recommended amount. When one is to engage in outdoor activities, during which the sunblock may wash off due to water or sweat, sunblock that can prevent both UVA and UVB (SPF30+, PA+++) needs to be applied every 2-3 hours. When one also wears sunglasses, a hat, long sleeved clothes, or a parasol, UV can be effectively blocked.
Q. Can wearing a baseball cap block enough UV ray?
A. A cap is an effective item that blocks UV ray for facial areas that clothes cannot. If the brim is more than 3 inches (7.5cm), then the UV can be blocked for 85% of a nose, 65% of a cheek, and 50% of a jaw. However, to wear a baseball cap, which only has a brim in its front, UV can only be blocked for forehead.
Q. It is known that dark-colored big-sized clothes are effective for blocking UV ray. Are there any specific colors or materials that are effective for UV blocking?
A. The UV blocking effect by a cloth is indicated in UPF (UV Protection Factor). They mark UPF for clothes in the States and in Australia. The thicker the thread, the denser the ply, and the cleaner the clothes, the higher the UPF. If UPF is between 15~24, UV is blocked about 93~96%; if UPF is 25~39, the block is 96~97%; if UPF is over 40, the block is more than 97.5%.
Generally, white color reflects UV ray, so it has blocks UV ray more effectively. However, the reflected UV ray becomes in touch with the skin, so blue or green colored clothes are more recommended, as they do not reflect UV ray as much. Black color absorbs not only UV ray but also the heat, so it is not recommended during the summer. Additionally, bigger sized clothes, rather than tight ones, protect the skin from UV ray, as the light can get through tight clothes. Each person has different UV blocking abilities, according to his or her skin color. The ones with paler skin have their skin turn red, even with 2-3 times less UV ray than those with darker skin. These people need to pay extra attention to UV ray blocking; when expected to stay outdoors for a long time, wearing UV-blocking clothes also helps.
Q. What should I be mindful of when choosing a parasol or a hat to prevent UV ray?
A. When choosing a hat or a parasol, black or indigo color is more effective in blocking UV ray than white, ivory, or pink colors. Some parasols have little holes as an aesthetic aspect, but for those who are sensitive to sunlight should avoid this design. For hats, rather than wearing a baseball cap or sun cap, which has insignificant UV block, wearing a large-brimmed hat that can create shadows over the entire face and neck is more effective. A brim that is longer than 3 inches (7.5 cm) is appropriate. Additionally, a hat made out of natural materials is more effective in blocking UV ray than those made of synthetic fiber, such as polyester or nylon.
Q. What is the effective type of UV sunblock for each skin type?
Dry Skin – Lotion-type, which applies well and can moisturize well, is recommended.
Oily Skin- There could be skin troubles when pores are blocked, so watery type is recommended.
Sensitive Skin- Sensitive skin type needs to be extra careful when choosing cosmetic goods. A stick-type, which can create a film without any irritation, is recommended. (It is recommended to refrain from a product with too high SPF or with strong odor.)
Complex Skin- Soft and smooth type product is recommended.
Since UVA, an everyday life UV ray, can permeate through windows, it is recommended to apply UVA-preventive product twice a day. UVA prevention is indicated through PA, and “PA+++” product is recommended.
When a lot of outdoor activities are expected (sports or an outing), apply UV sunblock on face, body, and neck 30 minutes before going outdoors. Once outside, multiple re-applications are recommended. Since the skin is exposed to UVA and UVB, SPF50+ and PA+++ product is recommended. Adding a large-brimmed hat, or a parasol is also recommended.
- 09 Jul 2015