Plucking hair in a specific pattern could lead to better growth of hair according to a research conducted by a team at the University of Southern California. Chih-Chiang Chen of National Yang-Ming University and Veterans General Hospital in Taiwan devised a method to pluck around 200 hair follicles individually on the back of a mouse. When the hairs were plucked in a high density pattern from circular areas between 3-5mm, the team noticed 450-1300 hair re-growing in the region.

The research team thinks that the process of plucking hair in this manner leads to an immune system response, which leads to strong hair regrowth. The process seems counterintuitive but the research team has witnessed strong hair, instead of baby hair which usually grow in other techniques.

The research team used genetic and molecular analysis to check the regrowth in mice after plucking hair. Researchers feel that the unexpected hair growth could be attributed to "quorum sensing" as the cells alert other cells about the damage and this triggers a damage control process.

Hair loss is a major issue for most men. Above age 50, nearly half of the men suffer from pattern balding.

"The work leads to potential new targets for treating alopecia, a form of hair loss. We unexpectedly found that plucking 200 hairs, with a proper distribution can cause up to 1,200 hairs to regenerate," said senior study author Cheng-Ming Chuong.

Chuong and his team is planning to experiment the technique on people with alopecia to check if the same immune system response leads to hair regrowth among humans. By activating an internal mechanism, the need for medicines or costly procedures to deal with balding won't be there.

Chuong added, "By plucking hairs in the way we designed in the paper, we can make the population feel stress, then it will enter the regeneration phase all together as a population."