Blue light therapy is typically administered in a series of sessions, with each session lasting anywhere from a few minutes to half an hour, depending on the specific treatment protocol and the condition being addressed. The number of sessions required varies based on individual factors such as the severity of the condition and the response to treatment.

It's important to note that while blue light therapy is generally safe and well-tolerated, some individuals may experience mild side effects such as temporary redness or dryness of the skin. It's essential to consult with a healthcare professional or dermatologist before starting blue light therapy to determine if it's suitable for your specific needs and to receive personalized treatment recommendations.