How to distinguish the authenticity of YNM sunscreen How to distinguish the quality of sunscreen

The most important step in skin care is sun protection. It is important to choose a good sunscreen. Never buy counterfeit or inferior products. Consumers are advised to purchase through regular channels. Today we will take a look at how to distinguish the authenticity of YNM sunscreen.

How to distinguish the authenticity of YNM sunscreen

First, look at the body of the sunscreen tube. The fake ones have darker printed letters and the tube body is of poor quality and reflective. Then look at the end of the tube. The fake ones have thick embossing and square numbers. Finally, look at the tube opening. The spiral end of the fake ones is flat and far away from the liquid outlet.

How to identify the quality of sunscreen

1. Possess both PA value and UVB value

SPF refers to the protection time of a product against UVB, which is the main culprit for skin redness and sunburn. PA is the product's protection against UVA, which can cause skin tanning. Therefore, you should choose sun protection products that include protection against sunburn and tanning. You should choose products with both indexes to achieve a more professional sun protection effect.

2. See the effect of anti-ultraviolet rays

Sunlight is divided into three parts according to the length of its wavelength: visible light, infrared light and ultraviolet light. Among them, ultraviolet rays that can cause harm to the human body can be divided into three types: long wave, medium wave and short wave. Long wave ultraviolet rays have a wavelength of 320-400 nanometers, medium wave ultraviolet rays have a wavelength of 280-320 nanometers, and short wave ultraviolet rays have a wavelength of 100-280 nanometers. A good sunscreen is one that can block both medium-wave and long-wave ultraviolet rays.

3. Look at the SPF index

Specifically, for daily indoor use, you can choose products with "SPF15-20" and "PA+ to PA++", for outdoor activities, you can choose "SPF25-30" and "PA++ to PA+++", and when playing at the beach, you should choose "SPF30+" and "PA+++". Apart from looking at the index, dry skin is suitable for sunscreen cream and ointment, oily skin is suitable for sunscreen liquid, lotion and spray, and normal skin is suitable for sunscreen lotion. ”