Taiwan Scientists Develop New Hair Regrowth Serum That Shows Results in Just 20 Days

Scientists from the National Taiwan University (NTU) have discovered a new hair regrowth serum made from natural fatty acids that helped mice grow new hair in just 20 days.

This is giving new hope to millions of people around the world who face baldness and hair thinning. The study was published in the scientific journal Cell Metabolism and shows how a simple, natural formula could one day replace chemical-based or surgical treatments for hair loss.

The research team found that the serum works by activating signals in fat cells under the skin. These signals wake up sleeping hair follicles and push them back into their growth phase. This process copies how the body naturally heals itself after a small injury.

The scientists noticed that when the skin becomes slightly irritated or inflamed, it often triggers new hair to grow. They then created a serum that can start this same healing signal safely, without actually hurting the skin.

Professor Sung-Jan (Jerry) Lin, who led the study, said, “Skin injury not only causes inflammation but also helps in hair regeneration. Our research shows that fatty acids can give similar results in a much safer way.” He explained that the goal was to find a method that could reawaken dormant follicles without causing pain or irritation.

Other treatments that depend on harsh chemicals, this new serum is made from monounsaturated fatty acids such as oleic acid and palmitoleic acid. These are natural compounds already found in human fat tissue and in many plant oils. Because the body already produces them, scientists believe they are safer and less likely to cause allergic reactions.

Professor Lin added, “Because these fatty acids are already present in our bodies, they are relatively safe. Our goal is to use them to activate hair follicle stem cells without causing damage.” The team first tested the serum on shaved mice, and the results were quick. Within 20 days, the mice grew new, thicker hair. Under the microscope, the hair roots looked stronger and more active than before.

The study also explained how this process works inside the body. After mild irritation or inflammation, a special type of white blood cell called a macrophage moves into the fat layer of the skin. These cells then release fatty acids through a process known as SAA3-dependent lipolysis.

The fatty acids send a signal to the resting hair follicles, telling them to start growing again. In simple words, the serum tricks the body into believing the skin is healing, which activates new hair growth naturally.

Professor Lin personally tried the formula on his own legs to understand how it works. He told New Scientist, “I applied these fatty acids dissolved in alcohol on my thighs for three weeks and found it promoted hair regrowth.” After that, animal testing confirmed the same results.

When the researchers applied sodium dodecyl sulfate, a common shampoo ingredient, to shaved mice, the irritation caused eczema-like symptoms but also led to new hair growth within 10 days. The team then designed their serum to mimic that effect using only natural fatty acids, avoiding harmful irritation.

The study was published in Cell Metabolism. The research attracted attention because it links fat cells, immune response, and hair follicle activity in a new way. It may become a foundation for the next generation of regenerative skin and hair treatments.

Dr. Luis Garza, a dermatologist from Johns Hopkins University, told Newsweek, “The authors cleverly show that they can use monounsaturated fatty acids instead of irritation. There is a possibility this could become a therapy, though human skin is thicker and harder for drug absorption.” He said the biggest challenge is making sure the serum can reach hair follicles deep inside the human scalp.

Hair loss is a major concern for millions of people. According to the World Population Review, about 42 percent of men in the United States experience baldness, making it one of the highest rates in the world. Baldness can be caused by genetics, hormones, stress, diet, or medical conditions.

Current treatments like Minoxidil or hair transplants are expensive and do not always give lasting results. This new NTU serum could offer a more natural, long-term alternative that stimulates real hair regrowth from within the skin.

The NTU team has already patented the formula and is preparing for human trials to determine the best dosage and concentration for scalp application. “Our next goal is to identify the right formulation that can safely stimulate human hair growth,” Lin said. “If successful, it could become an affordable over-the-counter product for everyone.”