Researchers use 3D printing to combat hair loss

At Columbia University, a team of researchers used 3D printing to grow hair! The technology allowed them to easily create plastic molds that were then used to grow hair follicles. A major innovation for the medical sector as it is very difficult to grow human hair under laboratory conditions. Some research had been done in the past to bioprint hair, however the American researchers seek to create a method that allows the hair follicles to grow more easily by 3D printing the molds on which they grow instead.

3D printing molds to combat hair loss

The team started from a clear observation: cells taken from the base of human hair do not grow when they are grown in the laboratory, unlike animal hair such as mice or rats. They are too resistant, which then limits capillary reconstruction and grafts. To overcome this problem, the researchers created a plastic mold designed to reproduce a natural micro-environment that stimulates the growth of the hair follicle. This mold has very fine small peaks, half a millimetre wide, inside which the cells are grown. “Traditional manufacturing techniques were not able to create such fine structures. This work has therefore been greatly facilitated by the innovations of 3D printing technology,” explains Angela Christiano, who initiated this study.

Cross section of a hair follicle | photo Credits: Angela Christiano / Columbia University Irving Medical Center

The team explains that they placed hair follicle cells around these peaks and then above them, cells producing keratin, the protein from which hair is made. After a three-week cultivation period, hair would started to grow. The molds were 3D printed on an FDM desktop 3D printer, specifically the Sindoh 3DWOX.