Does the white side of a surgical mask have to face inward?
Under normal circumstances, the white side of a surgical mask should always face inward. If any discomfort occurs, it is advisable to seek medical attention promptly. The detailed explanation is as follows:
The outer layer of a surgical mask—the colored side, typically blue or green—is the waterproof layer, made of hygienic-grade polypropylene non-woven fabric. Its primary function is to block splashed liquids and reduce the likelihood of virus transmission via droplets. The inner layer, which is white, serves as the moisture-absorbing layer, also made of hygienic-grade polypropylene non-woven fabric. It is soft and fits snugly against the face, effectively absorbing moisture and humidity released by the wearer to ensure comfort during use. Wearing the mask with the white side facing outward and the colored side inward may compromise the mask's waterproof properties, impair its filtration efficiency, and reduce overall protection.
In daily life, when wearing a surgical mask, one should maintain appropriate social distancing, wash hands frequently, and avoid crowded places to help prevent the spread of viruses.