
These condoms change color depending on the presence of various sexually transmitted diseases. A shift towards red indicates chlamydia, blue signifies gonorrhea, yellow signals syphilis, and purple denotes herpes simplex virus types one through four. The changing hue serves as a discreet indicator during use, providing users with real-time feedback. Each condom features built-in microfluidics that detect biomarkers associated with different STIs, triggering the color transformation upon contact. While these innovations aim to streamline diagnosis and prevention efforts, proper medical testing remains essential.