Summer is coming, the ultraviolet rays in the sun are not only damaging to our skin, but also causing a variety of problems to the skin, such as the "photoaging" phenomenon we care about, and how many beauty lovers have "surrendered";Today, let's learn about the connection between "UV rays and protection"!
The sun's rays include infrared and ultraviolet rays, which are not visible to the eye except for the light that can be seen with the eye (visible light), as shown in the image below.
Ultraviolet light is the shortest wavelength of light that reaches the Earth's surface and is divided into three categories: "UVA" = ultraviolet A waves, "UVB" = ultraviolet B waves, and "UVC" = ultraviolet C waves, depending on the wavelength difference. "UVC" is absorbed by the ozone layer and does not reach the ground.
** that turns red in sunlight will turn black in due course.
This is because melanocytes (pigment-producing cells) produce new melanin and try to protect ** from UV rays by absorbing and scattering UV rays.
The more melanin you have, the darker and more resistant you are to ultraviolet raysOn the contrary, the lower the amount of melanin, the weaker the resistance to ultraviolet rays and the more prone to sunburn. Therefore, there are individual differences in whether the skin "turns red quickly" or "turns red and red" or "immediately darkens without reddening" when exposed to the same sunlight.
The most effective way to avoid UV damage is to "don't be exposed to UV rays", but in everyday life, we can't 100 avoid UV radiation, so we make use of cosmetics to prevent UV rays, and also try to:
Wear a wide-brimmed hat. Hit the parasols.
Wear long sleeves. Wear sunglasses.
Let's design "not to be exposed to UV rays" as much as possible to protect yours from UV rays.
Today, I would like to recommend a sun umbrella ——— pocket umbrella that can be put in your pocket and is as light as a mobile phone!
As soon as I got my hands on it, I was amazed!
It can easily resist storms and rains, resistant to 9 into ultraviolet rays, UFP50+, with such an umbrella, in the wind and rain, are not afraid!
What's more, the mini is also good-looking, directly stuffed in the pocket and bag.
The welfare price that I won for everyone today!
89.9 yuan a handful!The link is given to you below!