Table 1 Summary of treatment schedules according to the participants’ skin type
Skin type | Starting time | Exposure time: +20% of treatment 1 | Exposure time: −20% of treatment 1 | Maximum exposure time (MET) | Total duration |
|---|---|---|---|---|---|
I | 15 sec | +3 sec | −3 sec | 3 min | 4 months |
II | 20 sec | +4 sec | −4 sec | 4 min | 4 months |
III | 25 sec | +5 sec | −5 sec | 5 min | 4 months |
IV | 30 sec | +6 sec | −6 sec | 6 min | 4 months |
V | 30 sec | +6 sec | −6 sec | 6 min | 4 months |
VI | 30 sec | +6 sec | −6 sec | 6 min | 4 months |