evidence: But now, a few decades later, I’ve finally found a reason to appreciate hydrogen peroxide. It turns out that it’s powerful enough to kill a particularly lethal kind of antibiotic-resistant bacteria—as long as it’s combined with a blue LED light or laser. [...] Typically, MRSA and other types of cells are able to withstand being doused with hydrogen peroxide through the defenses of their cell membranes. But after blue light phototherapy, MRSA’s membranes become temporarily pockmarked with holes. When hydrogen peroxide is delivered in combination with blue light, it’s able to flood the insides of MRSA cells and cause them to biologically implode, eradicating 99.9 percent of bacteria.