Monday, 17 July 2017

[Sun Care] Misapplication of sunscreen leaves people vulnerable to skin cancer. People missed 9.5 per cent of the whole face, with the eyelids and the area between the inner corner of the eye and the bridge of the nose missed the most.

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57 participants, male and female, were asked to apply sunscreen to their face with no further information or instructions given by the researchers. Photos were taken of each of the participants with a UV-sensitive camera before and after the application of sunscreen, with areas covered with sunscreen appearing black due to the UV camera. These images were then segmented and analysed by a custom-designed program to judge how successful each person was at covering their whole face.On average people missed 9.5 per cent of the whole face, with the most commonly missed areas being the eyelids (13.5 per cent) and the area between the inner corner of the eye and the bridge of the nose (77 per cent).The researchers then asked the participants back to repeat the experiment, this time giving extra information about skin cancers of the eyelid region. Armed with this information there was a slight improvement in the level of sunscreen coverage with 7.7% per cent of the face left unprotected.As applying sunscreen in these areas is not necessarily practical due to manufacturers’ warnings to keep products out of the eye, it is important to use other forms of protection such as sunglasses.Link
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