Abstract:
Objective To observe the protective effect of using sunscreen and covering with clothing against solar ultraviolet, and to provide a data support for guiding the public in with scientific sun protection.
Methods Seventy-eight subjects were selected and divided by preference into sunscreen use group (n = 62) and control group (n = 16). The protective effect of different sun protection behaviors was evaluated by observing the changes in skin color at each site before and after 9 days of sunlight exposure.
Results The skin color index individual typology angle (ITA°) at the left and right cheeks significantly decreased after sunlight exposure in both groups (P < 0.05), and there was no significant change in ITA° at the right upper arm after military training (P >0.05). The change in ITA° at the left and right cheeks after sunlight exposure in the sunscreen use group was significantly smaller than that in the control group (P < 0.05). The change in ITA° at the right upper arm after sunlight exposure was smaller than that at the right cheek in both groups.
Conclusion In actual daily situations, the use of sunscreen only slows but does not prevent the darkening of the skin color; covering with clothing is better than using sunscreen for sun protection.
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