Market, marked with anti-UV umbrella does not really function in UV. But if the claim can not reach the UV UV effects, they may mislead consumers, resulting in the use of the process to be more intense ultraviolet radiation, long-term misuse and even cause skin irritation. Therefore, the choice anti-UV products to be cautious. 
 Umbrellas also pay attention to maintenance. If the umbrella is dirty, it is best washed with water, can not use a brush, and not too frequent cleaning. The case of the wet umbrella, UV transmittance will increase effect of reduced protection. 
 In addition, the umbrella for the different regions need to choose a different SPF, if located in areas of strong sunlight, is necessary to choose a higher SPF umbrella. Shopping malls will be marked in the general umbrella and sunscreen SPF level.