[ad_1]
Spreading your sunscreen too thin could give you less than half the level of protection provided, according to a study.
Scientists have studied the damage to DNA caused by ultraviolet radiation on the skin of volunteers with different levels of sunscreen.
Their study showed that if applied with less than the recommended two milligrams per square centimeter of skin, the sunscreen is not as effective.
However, many people extend the lotion much thinner than this, as little as 0.8 milligrams per
At this level, a SPF 50 sunscreen would provide only 40% of the expected protection.
Samples from participants showed that repeated exposure to UV light caused "considerable" damage to unprotected skin. the radiation was weak.
The damage was less as the thickness of the sunscreen increased.
Professor Antony Young, Principal Investigator at King's College London, said: "There is no dispute that su nscreen provides significant protection against the carcinogenic impact of rays. ultraviolet rays of the sun.
"However, what this research shows is that the way sunscreen is applied plays an important role in determining its effectiveness.Most people do not use the sunscreens tested by the manufacturers, it is better that people use a much higher SPF than they think it necessary. "
Nina Goad, of the British Association of Dermatologists, said that She added," In theory, a SPF of 15 should be enough, but we know that in real life situations, we need the added protection of a higher SPF.
"It also shows why we should not have to use sunscreen to protect sun, but we should also use clothes and shade.
"Another consideration is that when we apply sunscreen, we are prone to missing patches of skin antes.
The results are reported in the jou acta Dermato-Venereologica Acta
Source link
