1.SPF index
UVB: Medium-wave ultraviolet rays, which can shine to the dermis of the skin, and its main effect is sun redness, acute damage is sunburn, but it has no accumulative effect.
SPF index: is the skin against UVB time multiplier, the average yellow skin can resist the sun for 15 minutes. Field professionals are out and about every day, always accepting the “kiss” of ultraviolet rays, SPF index at least 30 to be enough.
2, pay attention to SPF, but also pay attention to PA
UVA: long-wave ultraviolet radiation, although no acute damage will occur, but it can penetrate the dermis, so that the dermis collagen fiber degeneration, it can also penetrate the clothes people wear, glass and water into the skin, it has a cumulative effect on the human body damage. Its main effect is tanning, leading to skin aging, wrinkles and even the occurrence of skin cancer. So it is more important for field professionals to protect themselves against UVA than UVB.
The correct term for PA is Protection of UVA, which is the strength of protection against long-wave UVB rays, and the strength of PA is expressed by +. Its degree is marked by +, ++, ++++ three strengths, “+” the more, the better the protection against UVA. Usually, one more + means the effective protection time is extended. Specifically: PA + effective protection time of about 4 hours. PA + + effective protection time of about 8 hours. PA + + + super protection.
3, sunscreen to advance
Chemical sunscreens are absorbed by the skin, it takes a while to transform, so sunscreen products containing chemical sunscreen substances, must be used 20-30 minutes before going out, otherwise just painted on the door, equal to the skin is not protected from exposure to direct ultraviolet radiation.
4, sunscreen to apply enough amount
The premise of ensuring that the protection effect is consistent with the product logo is that you apply a full two milligrams of sunscreen products on a square centimeter of skin. But the survey results show that many women are not coated with enough amount, so that the sunscreen effect is greatly reduced. Please all female friends, especially field professionals, must pay attention to apply sunscreen to enough amount to be effective Oh.
5, multiple applications
Sunscreen is not the one that is applied before going out, because sweating, wiping, etc. will get off the face of the sunscreen. So, after sweating, you should immediately do not apply. If you really can’t make up sunscreen because of makeup, please use a powder with sunscreen factor (the higher the better) to cover up the skin and UV close contact every 2 to 3 hours!
6.Sun protection tips
Dry skin
Sun protection and hydration sunscreen program: dry skin in the summer is the most important thing that can not be ignored is hydration, only the skin has sufficient moisture to maintain the entire metabolic problem of the skin, the skin looks crystal clear and bright.
Combination skin
The T-zone (middle of the face) is oily and shiny, prone to acne and pimples and causes large pores, while the cheeks and around the eyes are like a desert, extremely dehydrated and dry. We need to take different initiatives for different parts of the skin, this skin MM better not be lazy oh, by the district to supplement the needs of different parts.
Oily skin
Clean and not greasy sunscreen program: oily skin because of the relationship between the body’s hormones, large pores, oily, which is among the most prone to acne or blackheads acne skin. This type of skin hydration is the key to maintain the skin’s water-oil balance, the choice of sunscreen should also be refreshing as well.
Sensitive skin – safety first sunscreen program: sensitive skin do not take it upon themselves to choose sunscreens, otherwise it may cause skin allergies, which are not worth the loss. It is best to choose the best sunscreen from pharmaceutical brands, which is safer. It is recommended that MM with sensitive skin consult a dermatologist before buying sunscreen is best.
Tomatoes: This is the best sunscreen food. Tomatoes are rich in the antioxidant lycopene, and a daily intake of 16 mg of lycopene can reduce the risk factor of sunburn by 40%. Cooked tomatoes work better than raw. Also eat some potatoes or carrots will be more effective, the beta carotene can effectively block UV.
Watermelon: Watermelon is second to none among fruits in terms of water content, so it is especially good for replenishing the body’s water loss. In addition, it also contains a variety of amino acids with skin physiological activity, which are easily absorbed by the skin and have a better effect on facial skin moisturizing, nutrition, sun protection and whitening.
Lemon: Lemon, which is rich in vitamin C, can promote metabolism, slow down the aging phenomenon, whiten and lighten spots, refine pores, soften the stratum corneum and make the skin shiny. According to research, lemon can reduce the incidence of skin cancer, just a spoonful of lemon juice per week can reduce the incidence of skin cancer by 30%. With lemon has a similar effect on the orange, kiwi, bell peppers and strawberries.
Nuts: air conditioning, wind, sun exposure will be eliminated to the skin in the moisture. The unsaturated fats contained in nuts are good for the skin and can soften the skin from the inside out, preventing wrinkles while moisturizing and making the skin look younger. But do not expect immediate results, it usually takes 30 days to make the skin improve.
7, how to use sunscreen
The higher the SPF value, the longer the sun protection time. SPF, or sun protection factor, is calculated as follows: the average yellow skin can withstand the sun for 15 minutes without being burned, so the use of SPF15 UV light protection products, there will be about 225 minutes (15 minutes x SPF15) of sun protection time. You can use SPF5-8 sunscreen for daily care, shopping and shopping, and SPF10-15 sunscreen when you go out for fun. When swimming or sunbathing, use SPF20-30 waterproof sunscreen.
②SPF values cannot be cumulative. Apply two layers of SPF10 sunscreen, both only one layer of SPF10 protection effect.
③You can’t apply sunscreen just before you go out. Sunscreen, like general skin care products, takes a certain amount of time to be absorbed by the skin. So, sunscreen should be applied 10-20 minutes before going out, and 30 minutes before going to the beach.
④Sunscreen should not be applied before applying makeup.
⑤ Applying sunscreen does not indicate that all is well. Usually sunscreen is applied to the skin in an amount of 2 mg per square centimeter in order to achieve the desired sun protection effect.
⑥Oily skin is appropriate to choose stronger cleansing foam cleansers and water-based sunscreens with stronger penetration; dry skin is appropriate to choose creamy cleansers and cream sunscreens; neutral skin is generally not strictly regulated.