What does the SPF value of sunscreen mean?

What does the SPF value of sunscreen mean? Sun protection is a very important step. Sun protection is a skin care work that should be done all year round. So, let’s take a look at it together.

What does the SPF value of sunscreen mean?

The sunscreen we usually buy will have the SPF value marked on the packaging. In fact, the SPF value refers to the sun protection factor, which is a detection index to measure the sunscreen's ability to defend against ultraviolet UVB in the sun. It indicates the sun protection effectiveness of sunscreen products. The larger the number after the SPF, the longer the sun protection time. But when we buy sunscreen, we should not think that the higher the SPF, the better. This needs to be determined based on the intensity of ultraviolet rays.

How to use sunscreen

Before we use sunscreen, we should clean our skin and do some preliminary skin care steps to prevent the sunscreen from irritating the skin. Make sure to use a sufficient amount of sunscreen, otherwise it will have no sun protection effect. Squeeze out an amount about the size of a one-yuan coin onto your hand, apply it on your face with your fingers, then gently pat it open and evenly apply it to your entire face. It is best to apply sunscreen twenty minutes before going out, because it takes a certain amount of time for the sunscreen to form a film to be effective. If you want to wear makeup, you need to apply sunscreen five minutes before makeup to allow the skin to fully absorb it. Sunscreen should be reapplied approximately every 2 to 3 hours.

Do I need to remove sunscreen?

Sunscreen needs to be removed because the sunscreen in the sunscreen is usually attached to the surface of the skin, and is also mixed with other skin care products and dirt from going out. It cannot be effectively cleaned simply with a facial cleanser. Many girls ask if sunscreen needs to be removed. If the sunscreen on the skin cannot be removed by makeup removal, it will cause the skin pores to be clogged, affecting the skin's absorption of skin care products and causing enlarged pores.

How much sunscreen lotion should be applied

The standard amount of sunscreen applied on the face is about 1g at a time. Generally, a 30g bottle of sunscreen should be used up within a month. If you don't use enough, it will not be able to achieve the sun protection effect. The amount of sunscreen used will vary for different textures, and each person's face size and skin type are also different. In short, it is safer to squeeze out an amount the size of a one-dollar coin.