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Many people use sunscreen to protect their skin in the sun, but the skin still tans, even appears melasma, freckles. In fact, it is not necessary to apply a lot of sunscreen to protect the skin better, so apply sunscreen
1. Harm of using the wrong amount of sunscreen
If applying sunscreen with too little or too much will cause great effects on the skin.
When applying too little sunscreen, the ability to cover the outer layer of sunscreen will not be high, making the skin wrinkled and dark, accelerating the process of causing skin aging. When applying too much sunscreen, the thick layer of cream that covers the surface of the skin will cause a secret, seal the pores, causing acne, large pores, oily skin, dullness, ...
Therefore, should not apply too little or too much sunscreen, but should only apply a sufficient dose.
2. How much sunscreen is enough?
When choosing to buy sunscreen, usually people will often look at the sun protection index written on the outside. And the point of view is that the higher the SPF, the better the sun protection effect. However, most people do not know that the sun protection index including: SPF, PA, PPD will promote the correct effect, the effect is only when the dose of sunscreen is just enough, ie don't use too little or use too much. too.
Standard dosage of sunscreen application The most standard dose of sunscreen is 2 milligrams of cream, equivalent to 1cm2 of skin. This is the dosage of sunscreen that dermatologists conclude. Therefore, usually when applying sunscreen to the whole face is 1-2 grams, and the whole body is about 25-30 grams.
In addition, this amount of cream will apply to the ears, neck, and middle of the face so that the face is evenly colored.
1 A simpler way to estimate the amount of sunscreen is enough using a teaspoon. 1-2 grams of face cream will fall into about 1/3 to 1/4 teaspoon. To use the amount of 25-30 grams of body sunscreen will equal about 1 small cup of wine.
Another way to measure the amount of sunscreen applied to the whole body is when squeezing the sunscreen, spread it evenly over 3 knuckles of the index finger.
Standard dosage to use spray sunscreen The standard dose of sunscreen when using spray form is to spray back and forth 4 times, forming 4 layers of cream spread evenly on the skin.
Liều lượng sử dụng kem chống nắng chuẩn nhất là 2 miligam kem tương đương với 1cm2 da
3. How many times a day should I use sunscreen?
Use sunscreen every day, whether it's sunny or rainy because harmful UV rays exist even when it's not sunny, they can penetrate fabrics, curtains, glass doors.
Sunscreen will be gradually reduced effectiveness when exposed to direct sunlight for many hours. Therefore, after a certain period of time, it is necessary to reapply sunscreen to protect the skin from UV rays, which are harmful to the skin in the most optimal way. Specifically:
If you work in an air-conditioned room, just applying sunscreen once a day is enough in the morning, of course, you must apply a full dose of sunscreen.
However, if the working seat is next to the window, direct light shines into the room, you still need to reapply sunscreen after 2 hours because UV rays can penetrate the glass
If you have to work or work outdoors, Sunscreen needs to be reapplied 2-3 hours after the first application.
Hãy sử dụng kem chống nắng hàng ngày, dù trời nắng hay mưa để bảo vệ da
4. Technique of applying sunscreen
Many people have a habit of applying sunscreen like lotion, rubbing it in a clockwise circle, or applying it with the whole hand. However, dermatologists have shown that the most effective way to apply sunscreen is to spread the cream on your face, then gently pat it with your fingertips to slowly penetrate the skin.
If you apply sunscreen like a cream in a circular shape, it will cause your pores to become clogged, not clear, the layers are poorly closed, especially in areas with many wrinkles, causing the cream to not be spread evenly, leaving dark spots. patchy white streaks, loss of aesthetics. Also, using your hands to apply the cream will make the outer layer of skin protection against the sun too thin, reducing the effectiveness of sun protection.
5. Other notes when using sunscreen
Should apply sunscreen at least 20 minutes before going out, so that the protective film has time to penetrate into the skin. Use sunscreen as the last step in your daily skincare routine and before applying makeup. If makeup is required, choose sunscreens with built-in makeup functions to help lift skin tone. Wait 1-2 minutes after applying sunscreen to allow it to penetrate into the skin before performing the next makeup steps. If you have to work in the sun for a long time or be exposed to water like going to the beach, you should choose a sunscreen with a higher SPF or have water-resistant ingredients to limit drift and maintain product effects. be longer. Choose a sunscreen product that is right for your skin. Before using sunscreen should clean the skin with cleanser, dry. In addition, it is necessary to choose sunscreen products of clear origin and origin, to avoid buying fakes and imitations to ensure safety when using as well as effective in protecting the skin.
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