Standard Use: 10-minute use at 16-24 inches from your device is optimal. 15-20 minutes for symptomatic areas may be benificial, but beyond that , the evidence points to diminishing returns. (The body can only absorb so much light at once)
How Often: To get the most out of your Bontanny using, consistency is key. Bontanny recommends once daily use, although 2-3 times per day may be beneficial for symptomatic areas.