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Sun exposure time of subject
| Sun exposure habit (hours per day) | Group | n | 0–4 weeks, n (%) | 4–8 weeks, n (%) | 8–12 weeks, n (%) |
|---|---|---|---|---|---|
| 2–5* | Aloe sterol | 23 | 21 (91.3) | 16 (69.6) | 13 (56.5) |
| Placebo | 24 | 17 (73.9) | 14 (60.9) | 7 (30.4) | |
| <2 | Aloe sterol | 23 | 2 (8.7) | 7 (30.4) | 10 (43.5) |
| Placebo | 24 | 7 (29) | 10 (42) | 17 (71) |
Note:
Each subject was instructed to expose his arm to sunlight every day for 2–5 hours.
