The Schwules Museum hosts a peculiar series of portraits this winter, done in sperm. If you didn’t know what they were painted in, the male silhouettes would look simply incandescent against the artist’s midnight blue backdrops.

For each painting, Martin von Ostrowski collects (and freezes) up to 50 condoms worth of off-white goo, creating a style of portraiture that is both genetic and mimetic in nature.