How to choose the correct way to use sunscreen

Sunscreen is applied on the face to protect the skin from external damage. Many women still use sunscreen. What is the correct way to use sunscreen? How to choose sunscreen?

The correct way to use sunscreen

Sunscreen should be applied about 20 minutes before going out, because sunscreen does not have sun protection effect as soon as it is applied, it needs time for the skin to absorb it. Moreover, the sun protection effect of sunscreen does not last all day long, so you should reapply sunscreen when you sweat a lot or after applying sunscreen for a few hours. Don’t think that you only need to use makeup remover oil when you wear heavy makeup. You still need to remove makeup after using sunscreen and primer to avoid sunscreen residue on the skin that clogs pores and causes various problems such as rough skin or acne.

How to choose the right sunscreen

1. Look at the ingredients

There are three types of sunscreen: chemical sunscreen, physical sunscreen, and physical + chemical sunscreen.

Physical sunscreens achieve the sun protection effect through physical refraction and reflection of light. Common ingredients are zinc oxide and titanium dioxide.

Chemical sunscreens absorb ultraviolet rays and convert light energy into heat energy on the skin surface through chemical reactions and release it. There are so many kinds of ingredients. Remember that all sunscreens other than physical ones are chemical sunscreens. (That’s how Lisa remembers it)

2. Look at the SPF value and PA value

SPF is a reflection of the ability to protect against UVB, in simple terms it means sun protection against redness. For example: If you don’t apply any product, your skin will turn red after 1 minute in the sun. But after applying SPF30 sunscreen, your skin will turn red after 30 minutes in the sun. PA targets UVA, in simple terms, it prevents tanning. PA, like SPF, is also an indicator of protection ability.

3. Look at the packaging volume

50g can be used up within one month if used daily, 75ml can be used up within two months, and 130g can be used up within two months if used daily. It depends on how long you use it. Sunscreen that is one year old cannot be used, and the shelf life after opening is only half a year. If it has never been opened, you can continue to use it.

4. Look at the oil content

Regarding oil content, it can only be a matter of experience. Oily skin is prone to oiliness, so it is more practical to choose a sunscreen with strong penetration, while dry skin should choose a sunscreen with a higher degree of moisture. For combination skin, you can decide whether you need more moisturizing effect or more sun protection effect.

5. Look at the usage occasion

For military training, swimming, etc., choose SPF30 or above

Daily use: spf15 is enough