What is SPF? SPF – a degree of protection from the sun, or "sun protection factor (sun protection factor). Under most conditions read more would agree. The value of SPF determined by comparing the amount of time required for tan to appear on the protected skin, and the time after which it will appear on unprotected skin. The time that you want to tan, depending on skin type and magnitude of SPF, which you need depends on the duration exposure to the sun. However, the degree of skin protection against solar radiation does not increase proportionally to the value of SPF. For example, SPF 4 blocks up to 75% of harmful solar radiation, but he can not give to protect a wide spectrum. SPF 15 blocks 93% harmful solar radiation, and an SPF of 30 to 97%. Most sunscreens with protection SPF 15 + provides protection against a broad spectrum of the sun, protecting from both UVA, and UVB-rays from. That kind of protection ensures Sunscreen SPF 30 Mary Kay .
What are the advantages of sunscreen with a high degree of SPF (SPF 70 or more), which recently appeared in the cosmetic market? They are designed for people whose skin is very sensitive to sunlight, but do not provide protection at higher levels. For example, a sunscreen SPF 70 blocks 98.6% of harmful solar radiation, which is not much different from capacity of sunscreen SPF 30. You should also know that for everyday use – especially to protect the skin – recommended funds with SPF 15 or SPF 30. And, of course, for these purposes perfectly Products Mary Kay . Use and application thoroughly and apply plenty of sunscreen on all parts of the body that may be exposed to solar radiation.
Pay special attention to the skin on the face, ears and hands. Do not forget that the delicate skin on your lips, too, may be exposed to sunlight, so be sure to use sunscreen lip balm SPF 15 or higher. It is this protection is provided by Sun Balm Lip SPF 15 Mary Kay , which contains zinc oxide and vitamin E. Do not forget to regularly repeat the application of sunscreen. Reapplication is recommended every 80 minutes, especially after swimming, exercise, or after wiping the body with a towel. Water-resistant sunscreens may lose their effectiveness after 40 minutes after bathing; sunscreen with a high water resistance is effective after immersion in water for 80 minutes. Sunscreen SPF 30 Mary Kay has a high water resistance and effectively protects the skin after being in water for 80 minutes. It can also be used to protect both body and protect sensitive skin. Expiration date Most sunscreens do not lose their effectiveness over three years. If properly applied sunscreen, the tube volume 115 ml is enough for a season. Do not use sunscreen shelf life has expired. Use sunscreen of SPF 15 or more on a daily basis, because the sun shines every day! Dr. Beth Lange Tips For best protect the skin from solar radiation should choose sunscreen of Mary Kay SPF 30 broad-spectrum, which block the effects of UVA / UVB-radiation. Be sure to apply on the skin enough sunscreen. A reapplied sunscreen after swimming, exercising or towel after wiping the body