As summer approaches, the importance of sunscreen becomes increasingly apparent. This article will explain how to use sunscreen properly, helping everyone effectively protect their skin from sun damage.
First, the amount of sunscreen used is crucial. According to research, the average adult’s body surface area is approximately 1.6 to 1.8 square meters, with the face and neck accounting for about 2% to 3.5% of the total surface area. Specifically, this area is about 320 to 630 square centimeters, thus allowing us to estimate the effective amount of sunscreen required. Doctors recommend applying approximately 2 milligrams of sunscreen per square centimeter. Therefore, for an area of 320 square centimeters, you should use about 0.6 to 0.7 grams, while for individuals with larger faces, it may require 1.1 to 1.3 grams. Based on a common 30-milliliter bottle of sunscreen, if you use 0.7 grams daily, it would be finished in 40 days; if you use 1.3 grams, it could run out in just 20 days. Thus, sunscreen is not a product that can be stored arbitrarily; it is an essential skincare item that must be frequently replenished according to usage.
It is not only about the quantity; the quality of sunscreen is equally important. Doctors further suggest that you can check the effectiveness of your sunscreen using a UV lamp. If the sunscreen darkens under the UV lamp, it indicates that it has some level of sun protection. However, most people do not apply it correctly, failing to achieve the necessary protection, which begs the question of how to improve this situation.
When applying sunscreen, doctors emphasize that even application is necessary, paying special attention to areas that are easily missed, particularly the sides of the nose, around the eyes, in front of the ears, and around the mouth. These regions are often neglected but are sensitive areas that are directly exposed to sunlight. Without reinforced protection, the skin is likely to suffer from sunburn or pigmentation issues.
In summary, applying sunscreen is an important and fundamental skincare step. Without proper amounts and coverage, one cannot enjoy effective protection. Therefore, during this season of strong UV rays, be sure to follow the suggestions above and regularly reapply sunscreen to fully protect your skin and enjoy worry-free days under the summer sun.