The main surface material of sanitary napkins that directly contacts the human skin is the surface material. The surface material is generally divided into three categories: soft cotton, dry mesh surface and pure cotton. Cotton soft type sanitary napkins refers to products with hot-air non-woven fabric on the surface layer, which is relatively fluffy and soft, and is not easy to re-infiltrate, but people with sensitive skin may have a small probability of skin irritation; dry mesh type refers to the surface layer using various perforated films A product made of raw materials, the liquid penetrates through the holes on the film and is absorbed by the absorbent layer; pure cotton refers to products made of 100% cotton fiber non-woven fabric on the surface layer, which is characterized by soft and skin-friendly surface, but has a longer use time. There may be damp discomfort for a long time.

Pay attention to when choosing sanitary napkins:
1) Purchasing channels: Try to buy products and well-known brands of large enterprises through formal channels, because these enterprises have advanced production equipment and technology, have strict quality management systems, and their product quality is relatively stable, safe, healthy and reliable.
2) Packaging: Avoid buying bulk sanitary napkins. The entire package of sanitary napkins should have a clean surface, uniform thickness, and no damage to the seal. The sealing of each outer package and independent small package should be smooth and free of air leakage to prevent product contamination.
3) Identification: Check whether the external packaging identification is complete, including: sanitary license number, production date, shelf life or validity period, implemented standard number, producer name and address, main raw materials, length and internal quantity, etc.
4) Date: Try to choose sanitary napkins produced recently, because the sanitary condition of products with too long storage period may decrease (bringing microorganisms, etc.).
5) Hand feeling: Good sanitary napkins are made of absorbent materials with strong absorption and good fluffiness, which are light and soft. If the sanitary napkins are mixed with other pulp and scraps, they will be heavier and harder, which will affect the comfort and security.