can blue light make acne worse
1 Visible blue light kills acne bacteria. 2  Three blue light treatments kill about 99.99% of acne bacteria that the light reaches, although some acne bacteria live deep in pores. 3  Red light therapy can help shrink the sebaceous glands that produce the oil that clogs pores.cne bacteria are killed by visible blue light, that is, light you can see, not UV light, of wavelengths between 407 and 420 nanometers. The bacteria have pigments in their protective cell membranes that resonate at those frequencies. These pigments break down the membrane, eventually killing the bacterium.
1 Drugs containing corticosteroids, androgens or lithium can worsen acne.  Diet. Studies indicate that certain dietary factors, including dairy products and carbohydrate-rich foods â such as bread, bagels and chips â may trigger acne. Chocolate has long been suspected of making acne worse. A recent study of 14 men with acne showed that eating chocolate was related to an increase in acne.