L Threonate

In Vitro Study: L Threonate suppresses dickkopf-1 (DKK-1) expression in human hair dermal papilla cells.
- There is evidence to suggest that DKK-1 plays a role in male hair loss (see https://www.ncbi.nlm.nih.gov/pubmed/17657240). This can be activated by DHT. L Threonate suppresses that activation.

It must be noted that DKK-1 is important in development (in mice at least) https://www.ncbi.nlm.nih.gov/pubmed/11702953, but the effects in adult humans is unclear.