Physical Sunscreen Is More Important! Choose Sunscreen Three Indicators.

If you want to make sunscreen clothing have good sunscreen effect, or apply the inorganic coating with strong reflection to ultraviolet ray, increase the ultraviolet reflectivity of textile fibers or textiles, such as Zinc Oxide, titanium dioxide, etc., or use ultraviolet absorbers to increase the UV absorptivity of textiles, such as salicylic acid esters, two benzophenones and so on.

These two ways can improve the shielding function of clothes to ultraviolet, so as to achieve the purpose of protecting the human body. Which kind of sunscreen is the most sunscreen, look at the following three indicators.

Look at labels: the bigger the UPF value, the more sunscreen.

According to the standard in the evaluation of ultraviolet radiation resistance of textiles, only when the UPF value of textile products is greater than 40 and the transmittance of long wave ultraviolet is less than 5% can it be called anti ultraviolet product. (Note: UPF is the UV protection coefficient, also known as ultraviolet shielding factor. It is the ratio of ultraviolet radiation to the average radiation of unprotected skin and the amount of ultraviolet radiation after the fabric is blocked. It represents the ability of fabric to protect against ultraviolet radiation. The greater the UPF value, the stronger the UV protection ability of the fabric. )

Look at the color: red clothes are the most sunscreen. Many people think that white clothes can best protect against ultraviolet light, which is actually wrong. The color of the same fabric is different, and the UV protection performance is quite different. The dark resistance of dark fabrics is better than that of light colored fabrics. In dark clothes, red is the best sunscreen. Generally speaking, Red > Orange / light green > sky blue > white. Note that dark clothing is easy to absorb heat. It is not recommended to wear close clothing.

Look at the material: the polyester material is effective, and the materials with better UV resistance are selected, such as linen, polyester and wool. Polyester and wool contain aromatic amino acids and benzene rings, which can absorb ultraviolet rays better.

Different types of fiber structure have different UV protection properties: Polyester > nylon > viscose > silk > cotton > ramie.