Spring is the season when the skin is most prone to allergies. People describe the weather in early spring as being like a child’s face that changes at the drop of a hat. However, the skin has just been through the harsh winter, it is difficult to adapt to the alternation of cold and warm air. In the season of recovery, people are shedding their winter clothes and entering the embrace of nature. As the willow draws, the ragweed blossoms, and the dust and sand fill the sky, a large number of allergens will float in the air and fly in all directions. So going outside for longer periods of time increases the chances of skin allergies. At the beginning of the warmth, the skin metabolism accelerates, sebaceous glands begin to secrete sebum, but its excretion function to be slightly lagging behind, it is very easy to cause hair follicle clogging, sebaceous gland inflammation, causing pimples, redness, swelling, itching and even peeling and so on, we don’t want to see the phenomenon.