...and still more digging reveals...

http://hair-growth-remedies.com/using-wheat-germ-oil-for-hair-growth/

Wheat germ oil contains fatty acid that are longer than that of found in other hair oils like coconut oil. And that is the reason that it nourishes and conditions the hair better than all other oils. Its moisturizing and conditioning properties make it capable of repairing the damaged hair at faster rate and prevent from further hair loss.

The vitamin B found in wheat germ oil promote the new growth and formation of new tissues, thus it helps to promote new hair growth both in terms of length and the volume of the hair. The key to healthy hair growth is the healthy scalp and healthy root of the hair which is done by the use of what germ oil.

https://food.ndtv.com/food-drinks/6-incredible-benefits-of-wheat-germ-oil-1638519

Wheat germ oil is a useful ingredient for maintaining healthy hair. "It is rich in linoleic acid and acts as a hair nourisher. Use it in the ratio 10:1 with other carrier oils such as olive and sesame (10 parts carrier oil and 1 part wheat germ oil) and apply on the scalp. Leave it on for some time before rinsing the hair," says Dr Ashutosh Gautam, Clinical Operations and Coordination Manager at Baidyanath.