Sperm Face Mask: Dirty Secret To Clearer Skin. I know what you are probably thinking, but give me a chance to explain. Yes, sperm is usually only associated with sex and making babies, but there is a study from the Dermatological Association in the UK that suggest that semen can have many other benefits/uses including health, The semen facial is a 30-minute do-it-at-home routine. – Rub the fresh Body warm semen an 18 to max. 20 year old young man onto your face. – Leave it for around 20 minutes so that it’s completely absorbed by the skin. – Wash it off by dabbing your face with cold water. – Wipe your skin with fragrant wet tissues