The importance of sun protection in summer has been repeated many times before. But there is one place you may always accidentally miss when it comes to sun protection: your hair. In the summer, you may have the feeling that even if you wash your hair scientifically and use a good conditioner, hair mask or even a leave-in conditioner, your hair is still in poor health, often frizzy and dry, with no shine. This is the time to consider the damage caused by UV rays to the hair. It is true that the hair shaft is not an “organ” and is not made up of active tissue, and exposure to sunlight is not a threat to human health or life. However, in recent years, more and more studies have shown that UV rays, which scare the skin, can also have adverse effects on hair! The first thing that happens to hair exposed to UV rays is that it loses lipids from the surface of the hair, causing dryness and frizz. Secondly, in this state, the damage to the hair scales will increase, cracking and falling off. If repair and sun protection measures are not taken at this time, then next, UV rays will degrade the keratin in the hair strands, making the gaps inside the hair strands larger, losing toughness, and even showing changes in the absorption characteristics of hair dyes and light fading after dyeing. For hair sun protection, you can also use the “ABC principle of sun protection”: A is Avoid, that is, prevention. UVB strong time concentrated in the morning 10:00 to 2:00 p.m., in this time period as far as possible not in outdoor activities, such as in the outdoor as far as possible in the shade or sheltered place, from the root to reduce UV damage to the hair. This will reduce the damage caused by UV rays. B is Block, which means shade. Umbrellas, sun hats, are good weapons to isolate the heat and UV rays. However, it should be noted that the need to use the regular, there is a certain UPF shade products, a treasure on the cheap “shade” products can not work Oh. C is Cream, that is, sunscreen. Currently on the market has a lot of hair with sunscreen spray, you can spray before going out, to the hair more layer of protection; if a long time in outdoor activities, sweating more, try to make up the spray every few hours.