Sun Protection by Beach Umbrella vs High SPF Sunscreen . Free Download A United Kingdom (2017). Neither shade nor sunscreen alone completely prevented sunburn. Meaning. Shade from a beach umbrella alone does not provide sufficient protection for extended exposure to UV rays; indicating a combination approach may be needed for optimal protection from UV rays. Shade works by physically shielding skin from direct harmful UV rays; however, skin may still remain exposed to reflected and indirect UV rays. There is no current standard metric to evaluate shade for its effectiveness in sun protection, and there is insufficient clinical evidence that a beach umbrella alone can provide adequate sun protection.
Objective. To directly measure sunburn protection offered by a standard beach umbrella compared with that provided by sunscreen with a high sun protection factor under actual use conditions. Design, Setting, and Participants. A single- center, evaluator- blinded, randomized clinical study was conducted from August 1. Lake Lewisville, Texas (elevation, 1.
Fitzpatrick skin types I (n = 1), II (n = 4. III (n = 3. 8). Participants were randomly assigned to 2 groups: 1 using only a beach umbrella, and the other using only sunscreen with a sun protection factor of 1.
All participants remained at a sunny beach for 3. Clinical sunburn evaluation of each individual for all exposed body sites was conducted 2. Interventions. The shade provided by a beach umbrella or protection provided by sunscreen with a sun protection factor of 1. Main Outcomes and Measures. Sunburn on all exposed body sites 2. Results. Among the 8. There was a total of 1.
Thirty- two of the 4. P < . 0. 01). Neither umbrella nor sunscreen alone completely prevented sunburn. Conclusions and Relevance. A beach umbrella alone may not provide sufficient protection for extended UV exposure.
It is important to educate the public that combining multiple sun protection measures may be needed to achieve optimal protection. Trial Registration.
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Identifier: ISRCTN1.