The difference between 40 times sun protection and 50 times sun protection. What does the multiple of sunscreen mean?

Sun protection has always been a very important topic in our skin care courses. It is very important for our skin health and also for our whitening goals. Sunscreen is undoubtedly a good helper to help us do a good job of sun protection, and we must understand the relevant knowledge about sunscreen.

The difference between 40 times sun protection and 50 times sun protection

There are three differences between the two. First of all, the sun protection effect is different. Compared with 50 times, 40 times has worse sun protection effect and lasts shorter. The texture of sunscreen is different. Compared with 40 times SPF, 50 times SPF is thicker and has more complex ingredients. The usage occasions are different. 50 times sun protection is mostly used outdoors, while 40 times sun protection is mostly used for commuting or indoors.

What does sunscreen multiplier mean?

The multiple of sunscreen is SPF, which stands for sun protection factor. It refers to the numerical value of the sunscreen effect in preventing UVB damage. Simply put, it refers to the sun protection strength of the sunscreen. The larger the SPF value, the stronger its sun protection effect. SPF generally refers to the sun protection effect value against UVB damage, indicating the sun protection effect that sunscreen products can provide. Common factors after SPF are 15+, 30+, 50+, etc.

How to Apply Sunscreen Properly

When applying sunscreen, in order not to affect the anti-UV effect, the sunscreen should be covered on the neck, face, chest, arms, ears and other easily overlooked areas. In addition, if there is other exposed skin on the body, sunscreen should also be applied.

How to remove sunscreen

If it is a low-factor sunscreen, whether it is chemical or physical, it can be washed off with a regular facial cleanser. But if your sunscreen has a higher SPF, you may need to use a soap-based cleanser or makeup remover to clean it.