As thin as a cicada, can it really protect you from the sun?
On the road, a passerby wearing sun protection clothing and riding an electric scooter told reporters: “At least there is an extra layer, which is more or less useful. I don’t know the specific effect. At least I feel comfortable wearing it.” Point.”
So can thin, nearly transparent sun protection clothing really protect against UV rays?
Dr. Gong Yan, director of the Environmental Protection Standards Professional Committee of the All-China Environmental Protection Federation and associate professor of the Beijing Institute of Fashion Technology, said that if the UPF (ultraviolet protection factor) of a sun-protective garment is greater than 30, and the UVA (long-wave dark spot effect ultraviolet) transmittance is less than 5% , then it can protect against ultraviolet rays. If it cannot be achieved, then this kind of sun protection clothing is not sun protection clothing in the true sense.
“There are many varieties of sun protection clothing on the market now, but in terms of production technology, they are mainly divided into two categories. One type is to directly add sun protection materials such as titanium dioxide to chemical fibers, and then use sun protection fibers to weave them into clothing. This type of sun protection clothing is generally The price is relatively high, for example, the “skin coat” currently in the market has a relatively high price and a lot of publicity; the other is to achieve the sun protection effect by applying a sunscreen layer on the fabric. Most umbrellas and jackets use this coating process , but there are many types of coating processes, and many coatings contain glue. The quality of the glue determines the environmental health indicators of sun protection clothing. If the coating glue used is unqualified, organic volatiles exceed the standard, or formaldehyde exceeds the standard, the clothes will be damaged. It is harmful to health. In addition, the sun protection clothing made by low-end coating method will be hard and not breathable because it is too dense, which is not conducive to ventilation and sweating, and it will be stuffy when worn.
Expert advice
When purchasing, you need to “look twice”
For consumers, how should they choose sun protection clothing?
Experts suggest looking at the logo first. There must be three contents on the tag label of regular anti-UV products: first, it indicates that the implementation standard is GB/T18830-2009; second, it indicates the UPF value, such as 30+, 40+ or 50+; third, it reminds long-term The protective properties provided by this product may be reduced during use and when exposed to stretch or moisture. When consumers purchase sun protection clothing, try to choose products with these logos.
Secondly, look at the sun protection factor. The higher the SPF, the better the UV protection. However, the breathability of sun protection clothing is also a detail that consumers cannot ignore when purchasing. Consumers should try to choose fabrics with better breathability. Otherwise, wearing some sun protection clothing with extremely poor breathability may cause prickly heat and rashes. . In addition, the darker the sun protective clothing, the higher the protection against ultraviolet rays.
Gong Yan reminds you to try to buy branded sun protection clothing from formal channels such as shopping malls or specialty stores to avoid buying fake and shoddy products. A piece of sun protection clothing that costs 20 or 30 yuan in a street store may not have sun protection effect, and some even have substandard quality. , long-term wear is harmful to health.
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