Instructions: how to choose (and use correctly) sunscreen
We hope you know that using sunscreen from early spring to late autumn is not a luxury, but your direct duty. Yes, even if it’s overcast in the street. Simply because it is, first, the main way to protect against melanoma, and secondly, an effective way to prevent the first signs of aging, such as wrinkles and age-related pigmentation.
At the same time, the market for skin protection against UV rays is huge, so it’s not easy to understand all the subtleties. In this material – everything you need to know to choose the ideal Sanskrit and use it that way, dermatologists advise.
Something about SPF, UVA / UVB and PA +
Susan Mayou, a consultant to the dermatologist at the London-based Cadogan Clinic, explains to Byrdie that the first thing to look at is the SPF (sun protection factor). “This is a measure of protection against UVB rays – ultraviolet radiation, responsible for redness of the skin and sunburn. The higher the factor, the greater the protection. So, the SPF 50 sunblock will block approximately 98% of UVB rays, SPF 30 – about 95%, and SPF 15 – about 93%, if, of course, the agent has been applied sufficiently densely, “she says.
Do you know how this factor is calculated? Technically, the number on the bottle is related to how long the remedy protects the skin of the control group of participants, in comparison to the time it takes to get a sunburn without any protection. However, here everything is not so simple. “No sunscreen will give you one hundred percent protection,” Maiu warns, and recommends in hot days not to forget about the headdress, sunglasses and covering the maximum body of clothes.
In addition to the ubiquitous SPF, on the Sanskrine packaging one can find asterisks – from one to five. They, experts explain, are used to indicate the level of protection from UVA rays that have a longer wavelength, so that they penetrate deeper into the skin, provoking its aging. Like UVB rays, UVA increases the risk of skin cancer, plus, they can penetrate through clouds and glass, so it’s worth to be especially careful with them.
Finally, on a cream, lotion or spray for sun protection (the latter, by the way, is not the most reasonable option – and that’s why) you can see PA + or PA ++. “This is the protection class used by the Japanese,” commented Susan Mayu. – PA + speaks of moderate protection, and PA ++ indicates very high protection. ”
How much and how often to apply
Cost does not necessarily dictate efficiency, but it is important to keep in mind that pharmacy brands, in comparison with the mass market, inspire dermatologists more confidence. In the sense, at least, that the SPF and other instructions in such means will rather correspond to reality.
But if you think that an expensive product will be more economical, then you are absolutely mistaken. “To achieve sufficient protection, the cream in any case should be applied rather thickly,” Maiu comments. “It’s about a teaspoon of money on the face and neck, and a dessert spoon on the hands, body and legs.” The expert adds that it should ideally be done every four hours, plus, it is necessary to update the cream after bathing, even if the package says that it is water resistant.
Studies show that people usually apply between 1/4 and 1/2 of the recommended amount of sunscreen, so we all obviously get less protection than the one we rely on. Dermatologists see this as a problem, reminding that in the case of Sanskrin the formula “the more, the better” always works.