Should I wear sunscreen on cloudy or rainy days?

You also need to use sunscreen on cloudy days. There are also ultraviolet rays on cloudy days, so you need sunscreen.

Sunscreen refers to cosmetics that add sunscreen agents that can block or absorb ultraviolet rays to prevent the skin from tanning and sunburn. According to the principle of sun protection, sunscreen can be divided into physical sunscreen and chemical sunscreen.

Sunscreen needs to choose products with different SPF or PA values ??according to specific objects to achieve the purpose of sun protection. Sunscreen works by isolating the skin from ultraviolet rays. The main difference between sunscreen and sunscreen is the physical properties. Cream generally has a water content of about 60% and looks "thick" and paste-like; while lotion has a water content of more than 70% and looks thinner and has a paste-like texture. Liquidity. Generally speaking, lotions are lighter than creams because they contain a higher water content, but formulators can still adjust the "greasiness" of creams by using different oily ingredients and thickeners. Therefore, you still need to look at the product itself.

Extended information

How to use

Using time

Ideally, sunscreen should be used after cleansing and before makeup. Make sure it sticks to the skin cells that need protection. But in reality, basically after completing the daily skin care steps, you can apply sunscreen and then put on your daily makeup. However, sunscreen, like general skin care products, takes a certain amount of time to be absorbed by the skin, so you should apply sunscreen 10 to 20 minutes before going out. ?

At the same time, it should be noted that the duration of the effect should be determined based on the SPF or PA value of the product.

Application site

Apply sunscreen to cover the neck, chest, arms, ears (areas that are particularly easy to forget and are particularly susceptible to sunburn), and any other exposed parts .

Reference material Baidu Encyclopedia-Sunscreen