In the early summer days, you started to appear, you searched in the sunscreen cabinet last year to apply to the skin.But if the sunscreen has expired?Are you sure that SPF in sunscreen still works?
First, we need to determine that you need to use sunscreen all year round.Second, sunscreen needs to apply or spray on the entire body, including sensitive eyes.Third, we need to use sunscreen with moderate SPF to protect the skin optimally.So before using, always make sure your sunscreen is still expiryly.
According to dermatologist Shari Marchbein, owner of Dr. Shari Marmbein clinic, explained:"Like food, sunscreen is also reduced quality because the ingredients are changed, leading to water/water.Sunlight, brown spots and risk of developing skin cancer cells ".
The expired sunscreen will cause unpredictable consequences
According to the famous chemical expert Perry Romanowski, and the founder of The Beauty Brain beauty website, shared:"The sunscreens will no longer be able to protect your delicate skin. At this time, sunscreen, whether physical or chemical, has no longer achieved SPF levels like advertising packagingWhile, chemical sunscreens with ingredients containing oxybenzone, avobenzone and homosalate can be oxidized and become less effective.Oxygen, but they are still reduced in quality and sun protection.
In addition, Dr. Erin Gilbert, currently the owner of the Eringilbertmd clinic and has cooperated with many big beauty newspapers, said:"When you open a bottle of sunscreen with dirty hands, or open too many times can cause bacteria to enter the product.".This will reduce the quality of the cream and cause acne to use.
When should I change sunscreen?
Also according to Dr. Gilbert, most sunscreens have a shelf life lasting for 3 years.So the first thing when buying sunscreen is that you must check the expiry date on the packaging.
In addition, Dr. Gilbert also emphasized:"If you leave sunscreen in high temperatures like cars, swimming pools or in bags, it will expire faster due to high temperature environment. In this case, you should replace a few months of JanuaryThe time to ensure that sunscreen will always work effectively. "
When using sunscreen, Dr. Gilbert recommends that you always have to check the quality of the product before use."Observe color, liquid/thick, smell before and after use will tell you whether the product is contaminated with bacteria or not."And remember no matter how much it is left over, you need to always replace sunscreen after 1 year from opening.
Here are the last 4 notes about sunscreen of dermatologists that every beauty believer should memorize:
1. Use sufficient quantities
According to Dr. Marchbein:"A ounce - equivalent to about 1 small cup - is the amount of cream needed for the face and body."A ounce is equivalent to about 28 grams, this is the standard amount of sunscreen to help optimize your skin to the sun.If you only use it on the face, it takes about 1 teaspoon of coffee for each time.
2. Regularly apply it
And Dr. Gilbert said: "Apply your sunscreen again every 2 hours.If you wear makeup, you can look for powdered sunscreens.It has just formed a "barrier" to protect the skin from the sun without affecting your makeup".
3. Use more products with oxidants
Products containing antioxidants will help you have healthier skin.Also according to Dr. Gilbert:"Vitamin C is a powerful antioxidant, not only helps your skin healthier but also limits the increase in pigmentation causing brown spots, freckles caused by UV rays."Therefore, in addition to sunscreen, do not forget to add a product that contains vitamin C or contain other antioxidants to increase skin protection.
4. Careful body shielding
"Do not forget that just using sunscreen is not able to protect you completely in front of the sun. On the market today there are many types of hats with more sun protection."- Doctor Gilbert said.Not to mention this summer, sunscreen is a trend that many beauty believers are looking to buy, so do not forget to buy an extra hat to protect the skin from the effects of the sun.
Source: Allure