Blue light therapy is considered a risk-free and safe treatment. It is non-invasive and painless, and you typically will not feel anything during the treatment. You must however always use eye protection and follow the recommended treatment course to prevent any dryness, redness or irritation. Typically, if experienced, these side effects are mild There is limited research on the potential risks (if any) of using LED light therapy during pregnancy. It's always important to consult your doctor if you are pregnant or breastfeeding