BIOHACKER Bryan Johnson who’s shelling out millions in his quest for immortality has revealed the exact steps he follows to reverse his hair loss and get rid of greys.

The tech-tycoon, 47, claimed he’s been able to grow a full head of hair despite being “genetically bald” through a mix of supplements, red light therapy and customised hair oil.

At one time, Bryan was best known for founding the payments company Braintree — but nowadays he’s making headlines for his very expensive quest to turn back the clock and become 18 again.