Many people use sunscreen to protect their skin under the effects of UV rays , but the skin still becomes dark, even melasma, freckles appear. So how much sunscreen is enough to protect the skin against the effects of the sun? Follow along in the article below with Paula’s Choice!

What are the consequences of applying the wrong amount of sunscreen?
Before finding the answer to the question of how much sunscreen is enough , let’s find out with Paula’s Choice the harmful effects of applying the wrong amount of sunscreen.
As you know, a good sunscreen product will help protect the skin comprehensively from UV rays, blue light and harmful environmental agents. What if you apply too little or too much sunscreen?
- When applying too little sunscreen, the product’s sun protection ability will be greatly reduced. In particular, the outer layer of the film will not be enough to resist the effects of UV rays, causing the skin to appear more wrinkles, darkening and accelerating the premature aging process .
- Conversely, when applying too much sunscreen, the thick layer of cream that covers the surface of the skin will not make the sun protection effect increase. On the contrary, they cause clogged pores , clogged skin and are the cause of acne breakouts on the skin.

Therefore, according to dermatologists at Paula’s Choice Vietnam, you should apply a sufficient dose of sunscreen to your face and neck to optimize the best skin protection effect. Don’t forget to protect yourself from the sun – an important skin care step that cannot be ignored.
Answer how much sunscreen is enough?
The question is how much sunscreen is enough ? According to dermatologists, the dose of sunscreen used depends on the texture of the product used. For example, if you use the topical form (cream, lotion, milk texture) it will be different from the spray. Here are the guidelines for applying sunscreen from Paula’s Choice:
With topical sunscreen
The most standard dosage of sunscreen is 2mg per 1cm2 of skin. This is the dosage of sunscreen that is concluded by the world’s leading dermatologists. You can also measure this amount with 1 grape / 1 coin / 2 fingers.
This is also the amount of cream used to cover the entire ear and neck area to protect the skin optimally and comprehensively.

With spray sunscreen
For spray sunscreen products, the standard sunscreen dosage is conventionally divided into 4 sprays. Spray again and again 4 times to form 4 layers of cream spread evenly on the skin, then pat evenly to absorb the product.
How many times a day is enough to apply sunscreen?
The question of how much sunscreen to use has been answered in the above information. To continue to answer the question of how many times a day should be applied sunscreen, keep following this article!
The world’s leading dermatologists recommend that you use sunscreen every day, whether it’s sunny or rainy, indoors or out because harmful UV rays are always present even when it’s not sunny. , they can penetrate fabrics, curtains, glass doors, directly attacking your skin.

How often to apply sunscreen? Why reapply sunscreen? You probably know that the sun protection effect of the product will be gradually reduced when exposed to direct UV rays for many hours. Therefore, after a certain period of time, reapply sunscreen to protect your skin from sun damage . Specifically:
- If you are an office worker working in an air-conditioned room, you can apply sunscreen 1-2 times a day in the morning and at noon after waking up. However, if your work seat is next to a window, direct light shines in, you still need to reapply after 2-3 hours because UV rays can penetrate the glass, and directly attack the skin.
- If your job requires active and outdoor work, reapply sunscreen every 2-4 hours from the first application.
Instructions for applying effective sunscreen
Many people have the habit of rubbing sunscreen in a clockwise circle on their face. This method of application is not only ineffective but also causes the sunscreen to clump on the skin. The experts at Paula’s Choice recommend dabbing sunscreen in spots on your skin and then patting it gently with your fingertips to allow it to slowly absorb into the skin.
If you still apply sunscreen, your pores will be clogged, your skin will be clogged and you will be left with patchy, unsightly white streaks. Using your hands to apply the cream will make the protective coating on the skin too thin, reducing the effectiveness of sun protection.
Answers to frequently asked questions about using sunscreen
How long should I put on sunscreen?
Answer: Depends on the sunscreen you use.
- If using chemical sunscreen : Wait about 15-20 minutes after applying.
- If using physical sunscreen : You can go outside immediately after applying.
How long should I apply sunscreen before I wash my face and reapply it properly?
Answer: According to studies by dermatologists, under normal operating conditions, sunscreen products will be effective for 2-4 hours and up to 6 hours. Therefore, after about 2 to 4 hours after applying sunscreen, you should clean your face to continue applying sunscreen for the second time. You can use Gentle Touch Makeup Remover to clean and then continue. Reapply sunscreen as usual. In the evening, clean the skin as usual with 2 steps to remove makeup – wash your face to clear the skin and prevent acne from appearing.
Above is the answer to how much sunscreen is enough ? that experts answer for you.