For girls, what they have to store in summer is sunscreen, so that they won't be tanned in summer. Can the sunscreen bought last year still be used? In addition, everyone's daily life is different, and the probability of using sunscreen may be different. So after a bottle of sunscreen is opened, how long is the shelf life of sunscreen?
How long is the shelf life of sunscreen
There are many kinds of sunscreen, so the shelf life of sunscreen is different according to the situation of each brand. Generally, there is no sunscreen in Kaifeng, and the shelf life is three years. Some sunscreens are even as long as five years. Sunscreen shelf life is generally marked on the bottle, generation and date can be seen.
How long is the shelf life of sunscreen after opening
Although the shelf life of sunscreen is 3-5 years, the shelf life of sunscreen after opening is half a year to one year. Because after the sunscreen is opened, with the growth of time, the sunscreen in the sunscreen will be oxidized. Once the sunscreen sunscreen is oxidized by the air, the sunscreen effect of sunscreen will be greatly reduced, or no effect. This is very easy to make the skin sunburn, sunburn and tanning in the sun.
How to apply sunscreen in summer
1. Use a thick sunscreen pat and a thin one with a wipe
Go out in a hurry and apply sunscreen, but the higher the coefficient is, the thicker the texture will be, and the more uneven it will be. Try to apply sunscreen by patting. First, put sunscreen on the most easily exposed parts, such as forehead, nose and cheeks. After fainting gently, pat evenly by patting, which is fast and convenient. And the texture of thin sunscreen is also good ductility, just spread evenly.
2. Eyes, neck, ears and other parts should be smeared with different methods
When smearing on the face, we should use our middle finger and ring finger to wipe, and gently draw a circle from the inside out of the zygomatic bone. Don't forget to smear your neck after you finish painting your face. Smear your neck from bottom to top, so that you won't pull your skin and produce wrinkles. Then use our hands and fingertips to smear. Remember, the ears, the back of the neck and other parts should also be sunscreen, smear the ears, as long as one hand than the 'yeah' gesture, and then gently clip the ear up and down to wipe it.
3. High power sunscreen for hard to wipe parts
It's hard to cover everything when you apply sunscreen. You always accidentally miss the hard part. Therefore, before you go out, you can carefully apply high factor sunscreen around your eyes, lips, ears, armpits, insteps and other details. High factor sunscreen can delay the tanning time. If you forget to apply it, you can survive for a period of time.
4. Change color makeup into sunscreen cosmetics
In summer, cosmetics can be replaced with sunscreen products. After finishing the general skin care products, first apply a layer of sunscreen liquid, then put on a layer of physical sunscreen powder or powder makeup. After that, even if it is too late to supplement sunscreen, it will still maintain certain sunscreen effect.
5. Make up with sunscreen powder is the most convenient and efficient
Do you think it's time-consuming and laborious to re apply sunscreen? If your face is too greasy, you have to wash your face first, then finish the basic maintenance, and then apply sunscreen. So many procedures always make people feel troublesome. In fact, you can choose the honey powder containing sunscreen factor. First, clean the glossy face with oil absorption paper, and then apply sunscreen powder.