Application

2 mg / cm2 without future protection apparent greater application. Despite the use of the skin of an anatomical region to cut a variation site, still there is variability in the protection measure to the constant application: while this may be not avoided errors associated with the experimental procedure and the analysis, also can be caused by individual variations in the architecture of the skin affecting the protection provided by sunscreens. A range of data in Fig. 4 (a) are shown in Fig. 4 (b): the average percentage of reduction in the intensity of the signal of the ascorbate radical was calculated for the levels of application of 0.5 1.5, 1.5 2.5, and 2.5 4.0 mg per cm2 and deviation standard was calculated for n = 3 for each sunscreen on each application tier. These levels of application were defined: the average application of solar filter (for all brands) for the Group of 0.5 1.5 is about 1.2 mg per cm2; 2.2 mg per cm2 for the Group of 1.5 2.5; and 3 mg per cm2 for the Group 2.5 4.0 mg per cm2. We found that the level of protection in each application is comparable with the 3 bands studied: protection in 1.5 2.5 mg per cm2 and more height is approximately 50 60% reduction in the intensity of the signal; However, 0.5 to 1.5 mg per cm2 protection is less, between 40 50% for all brands. The statistical analysis of the data shows that 1 and 2 marks for protection with application of 0.5 1.5 mg per cm2 is significantly lower than the protection of 1.5 2.5 mg / cm2.

For the 3 brand while there is the same tendency, a statistical significance is not reached (p = 0. 243). 2.5 Application data 4.0 mg per cm2 are not significantly different from those of 1.5 2.5 mg / cm2 (for all 3 brands) the difference between the measured protection at 0.5 1.5 mg po cm2 and 1.5 2.5 mg / cm2 are slightly less than what was expected; However it is believed that this reflects the average of current applications of 1.2 and 2.2 mg per cm2.

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