What color umbrella is the most sun-proof?

1, black umbrella has the best sunscreen effect.

The ultraviolet transmittance of black umbrella is 5%, so compared with other umbrellas, black umbrella has the best sun protection effect.

2. Navy blue, red, dark green and purple umbrellas have the second sun protection effect.

The ultraviolet transmittance of navy blue, red, dark green and purple umbrellas is 5%- 10%, so girls who don't like black umbrellas can also choose these colors.

3. The sunscreen effect of green, reddish, pale green and white umbrellas has been improved again.

The ultraviolet transmittance of green, light red, light green and white umbrellas is 15%-20%, and their sunscreen effect is still acceptable.

When choosing a sunshade, you should pay attention to the following three aspects.

1, read the label. Mainly depends on the protection index, namely UPF and UVA values. Only when UPF is greater than 40 and UVA transmittance is less than 5% can it be called anti-ultraviolet product. The higher the UPF value, the better its ultraviolet resistance. Generally, most signs on the market are "UPF50++", and its protection function is enough.

2. Look at the color. In the case of the same fabric, the dark umbrella has better anti-ultraviolet effect. The biggest difference between parasols and other umbrellas is that they have an anti-ultraviolet coating, which can prevent the penetration of ultraviolet rays.

3. Look at the fabric. The fabric with thicker umbrella cover and tighter fabric has better ultraviolet resistance. Compared with cotton, silk, nylon and other fabrics, polyester is more sun-proof. If you want to know the sun protection effect of sunshade, you might as well try it in the sun. Umbrellas with deeper shadows and lower light transmittance have the best sun protection effect.