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Physical filters reflect, transmit or partially absorb light and can protect against both UVA and UVB radiation. The two most common physical filters are titanium dioxide and zinc oxide. Skin cancer, or malignant melanoma, appears to be caused by damage to the DNA structure of skin cells that are exposed to the sun — with just 5% of all carcinomas occurring on areas of the skin that are not exposed. Damage to these skin cells leads to the growth of degenerated cells that in turn result in cancer. In Europe, skin cancer is far more prevalent in the north, where people's skin tends to contain less pigmentation. Ultraviolet (UV) rays are invisible and are divided into UVA, UVB and UVC rays. UVA rays cause long-term skin damage, including skin cancer and premature skin ageing, while UVB rays are the main cause of sunburn. Approximately 10 times more UVA rays reach the earth's surface than UVB rays. UVC rays are absorbed by the earth's atmosphere and don't affect the skin. If you do end up overdoing it in the sun, do not fear! A cooling aftersun will work to relieve any inflammation and help to heal your sunburn. From your favourite suncare brands like Malibu and Nivea, Savers have a range of aftersun products with skin hydrating ingredients such as aloe vera and avocado oil that’ll help to soothe and nourish burnt skin. The SPF number indicates how many times longer you can stay in the sun before starting to burn. The way it works is that you take the number of minutes it normally takes your skin to burn in the sun with no protection (let's say 15 minutes). Then, you multiply that number by the SPF number (in this case, Factor 6). Since 15 x 6 = 90, you should have 90 minutes before you start to get a sun burn. In other words, the higher the SPF the greater the protection of your sunscreen. But remember these are theoretical values. In reality, the time depends, among other factors, on your skin phototype and the local UV intensity.
Different skin types react to the sun in different ways, so the type of skin you have influences how long you can stay in the sun and what types of sunscreen you need. Going on holiday often means exposing your skin to the sun for the first time after a long winter of cold weather and warm clothes. It's important to devote extra attention to your skin before you leave to make sure it is ready for the sudden change.The Sun Protection Factor (SPF) specified on your bottle of sunscreen tells you how much protection your sunscreen offers against UVB rays. The first colour-related effect of exposure to the sun is known as "immediate pigmentation", or a colouring that appears during exposure and disappears within 2 hours. Caused by UVA and visible light, immediate pigmentation does not protect against sunburn. To choose the right SPF, you need to consider several factors. The most important of these is your skin's phototype, which includes the colour of your skin before exposure to the sun, your hair and eye colour and other factors. You also need to think about where you are going on holiday and what time of year it is. Tanning starts 3-5 days after sun exposure, when special skin cells called melanocytes start synthesising melanin, the body's natural tanning pigment. Melanin is then transferred to neighbouring cells called keratinocytes, which are the main cell type in the epidermis or upper layer of your skin. Unlike immediate pigmentation, actual tanning does help protect against the harmful effects of UV radiation. Tanning fades progressively, but remember that people with a natural suntan also need to apply sunscreen, as a tan does not provide sufficient protection from UV exposure. Protect children. Children are particularly vulnerable to the effects of UV radiation and often spend more time outdoors than adults. Parents should take special care to protect them from the sun using protective clothing, hats, sunglasses and sunscreen. Keep babies and young children out of direct sunlight.
In general, the higher the SPF number of your sunscreen, the greater the protection, so an SPF 6 or 10 offers low protection, SPF 15, 20 or 25 offers medium protection, SPF 30 or 50 offers high protection, and SPF 50+ offers very high protection. This is measured using a standardised test. A "photostable" sunscreen is able to withstand the effects of UV exposure better, so it keeps its level of protection.
What does "Photostable" protection mean?
Sun exposure plays a major role in the skin's ageing process. Up to 90% of all visible signs of ageing can be attributed to the harmful effects of sun exposure. The sun provides the earth with life-giving energy and is the major factor in determining the earth's climate and weather. The sun not only sends visible light to the earth but also invisible radiation that can have a negative impact on our health if received in doses that are too high. PIZ BUIN ® suncare products give you the sun protection you need, but what else can you do to ensure the best possible safety under the sun? +
The sun makes life on earth possible, but it can also have harmful effects — especially without sufficient sun protection. Chemical filters work by absorbing UV light and converting it to higher wavelength rays that are less harmful to the skin. The key technology used in any sunscreen is the UV filter. UV filters can be either chemical or physical.
Mountain Sun
Quite the reverse is true. Although your skin changes colour more slowly when you're wearing sunscreen, the resulting tan will be better and longer-lasting because the sunscreen will prevent your skin from burning and peeling. Some PIZ BUIN ® products even contain special ingredients that stimulate the natural production and the even distribution of tanning pigments in the skin.
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