Christian Aigens was born in Copenhagen and trained at the Kunstnernes Frie Studieskoler, which offered an alternative approach to the classical leanings of the Academy. During his time there, he studied under Peder Severin Krøyer and Laurits Tuxe. He later trained at the Academy itself so had the benefit of a broad range of influences.

He’s predominantly known for his portraits - one of which is held at the Museum of Aalborg.