Scientists have discovered a "critical breakthrough" in finding a cure for baldness.
Researchers found they could produce natural-looking hair with stem cells, meaning that a cure for hair loss could be in sight.
The American scientists said they have refined a method that allows them to grow hair through the skin of mice derived from dermal papilla cells, human pluripotent stem cells.
The results were presented by the experts at the annual meeting of the International Society for Stem Cell Research in Los Angeles.
In the study, human stem cells were combined with mouse cells before being transferred to a biodegradable 3D framework made of the same material as solvable stitches.
The scaffold helped to control the direction of hair growth and to integrate the stem cells into the skin.
"Our new Proto col … overcomes the key technological challenges that have kept our discovery from real use," said Alexey Terskik of the Medical Discovery Institute of Sanford Burnham Prebys in California.
"Now we have a robust, highly controlled method of producing natural-looking hair that grows through the skin with an unlimited amount of skin papilla cells derived from iPSC.
" This is a major breakthrough in the development of cell-based hair loss therapies and the field of regenerative medicine.
Scientists are now trying to apply the same process to humans, saying that there is an "unlimited" supply of stem cells that can be obtained from a simple blood draw.
According to the British Association of Dermatologists Approximately 50% of men over 50 years suffer from hair loss.
Current treatments include the drugs Minoxidil or Finasteride hair transplants can cost between £ 1,000 and £ 30,000.