Table 4.
Extract | SPF a MEAN ± SEM (n = 3) | ||
---|---|---|---|
0.25 mg/mL | 0.5 mg/mL | 0.75 mg/mL | |
S. medusula | 16.9 ± 0.1 b | 26.7 ± 0.6 c | 32.5 ± 0.4 d |
S. calva | 19.7 ± 0.1 c | 30.2 ± 0.2 d | 35.4 ± 0.2 d |
a Sun protective factor. Results indicate b low UV protection; c medium UV protection; d high UV protection. Results were expressed as the mean ± standard error of the mean from three independent assays.