Everyone knows that the main protection against sunscreen is the ultraviolet rays (UV) , and ultraviolet rays can be subdivided into long-wave ultraviolet (UVA, medium-wave ultraviolet (< span class="s1">UVB), short-wave ultraviolet (UVC ). Among them, UVC was defeated in the battle with the ozone layer in the atmosphere, and can overcome the ozone reaching the earth's surface to affect human health The only UVA and UVB. Here, UVAworst and most powerful, accounting for all the ultraviolet rays in sunlight95%Bow left and right…, the rest span>5%isUVB.

(Picture Source Network)

UVB is relatively weak, and a layer of glass can block it from the outside. It has an erythematous effect on the human body, and can promote the metabolism of minerals and the formation of vitaminsD, but long-term or excessive exposure may cause The skin tans and causes redness and peeling. UVAis unusual, known as“Sunshine Killer”. It is very penetrating and can attack the human body through glass, thin clothing, etc., penetrate the surface of the skin, penetrate deep into the tissue below the dermis, destroy collagen, elastic fiber tissue and other fine structures inside the skin, resulting in wrinkles and fine lines. The skin is sagging and aging, which is the legendary photoaging.

So yeah, when we're talking about sun protection, it's more about UV protectionUVA.

Sunscreens are broadly divided into soft and hard sunscreens. Soft sunscreen refers to applying sunscreen and other body sunscreen products. Hard sun protection refers to protection from the sun with umbrellas, sun protection clothing, sunglasses, etc. In fact, according to research, the hard protection of hats, umbrellas and clothes is stronger and safer than the soft protection of sunscreen.

The effect of hard sunscreen has a value that can be measured, and that is the UPFfactor. UPF(Ultraviolet Protection Factor), which is the UV protection factor of the fabric. For example, the value of UPF is 50, it means that 1/50 of UV rays can penetrate the fabric. UPFThe higher the value, the better the UV protection. The label with the highest UPFvalue for textiles in the national standard is50+< /span>, which is UPF>50. Because UPFis greater than50In the future, the impact on the human body can be completely ignored. Therefore, a good UPF>50 umbrella can block most of the ultraviolet rays in a physical way, and it Compared with sun protection clothing+hat+This set of sunglasses is also more convenient. So you say, is it the first step of summer sun protection 100 times more important than sunscreen?

The mainstay of such a hard sunscreen, how to buy a sunscreen umbrella

1.See Shading Material Coating

Vinyl>Colour>Silver glue>no glue layer span>>Lace Cutout Umbrella

Dark umbrella>Light umbrella

Multilayer glue/Multilayer glue>One or two layers of glue> No glue layer>lace cutout umbrella

2.UPFvalue tag

UPFvalues from0to50,0minimum—< span class="s2">Worst sun protection,50highest ——Sunscreen is the best. WhenUPF When the value is 30, the UV filter can reach 95%. UPFvalues40, the UV filter is 98%, UPFWhen the value of is 50, the UV filter is 99.8% and above. In general, UPFvalues30 is enough for daily sun protection.

3.Umbrella size

The bigger the better, the bigger the umbrella can cover more skin from the sun. What banana umbrella and pencil umbrella (the girl who overturned a boat with a lemon umbrella), it's not much bigger than her face when opened......The sun shines from the chest down, and the sunscreen effect is greatly reduced.

4.Other

Sunscreen protects against UV rays and shading.

The coating color of the umbrella cloth has nothing to do with UV protection, because it is not the color that really plays the role of UV protection, but the weave and coating quality of the umbrella cloth.

The effect of the color of the umbrella coating on the shading is different, and the shading effect of the black coating will definitely be better.

The higher the weave of the umbrella fabric, the smaller the space between the yarns and the lower the probability of UV transmission. The role of the coating is to seal these tiny gaps, and a really good umbrella needs to be made once on the umbrella clothUVProcessing (similar to sunscreen-like lotion) to achieve the effect of sun protection.

I was in uv blocker andcoolibar tangled for a while, after all, the two brands are of equal strength. As a result, I didn't expect it, and after checking it, I planted grassgreenstone. why! Because it looks better than the American one! ! ! ! !

(Photo source official website)

Isn't it so cute!

If it is elongated, it is the long-handled umbrella that the British love to use. The diameter of the umbrella is nearly one meter. Made of North American logs, hand-carved and painted with the classic rabbit-head umbrella handle, world-class blended fabric, permanent sunscreen, super water-repellent treated umbrella cloth.

I took pictures just because they looked good, isn't it really cute!