Topical melatonin for hair is a treatment that applies melatonin-a hormone regulating sleep and circadian rhythms-to the scalp to promote hair growth and reduce hair loss.
Melatonin plays a role in hair follicle regulation. When applied topically, it may extend the anagen (growth) phase of the hair cycle and shorten the telogen (resting) phase. This can lead to thicker, healthier hair.
A 2019 study published in Dermatology Practical & Conceptual found that a 0.1% melatonin solution improved hair density in women with androgenetic alopecia (female pattern hair loss) after six months of use. The treatment was well-tolerated with minimal side effects.
Topical melatonin for hair comes in several forms:
Most products contain between 0.03% and 0.1% melatonin. Higher concentrations may not necessarily be more effective and could increase the risk of side effects.
Some people confuse topical melatonin with oral melatonin supplements. While both contain the same hormone, they work differently. Oral melatonin is primarily used for sleep support, while topical melatonin targets hair follicles directly.
Another misconception is that melatonin alone can cure severe hair loss. In reality, it is most effective when combined with other treatments, such as melatonin for hair loss therapies or lifestyle changes.
I tested a 0.1% melatonin serum for three months. After the first month, I noticed less hair shedding during brushing. By the third month, my hair appeared thicker, especially around the crown. However, results vary, and consistent use is key.
Topical melatonin is used primarily to address hair thinning and loss caused by androgenetic alopecia or aging. It is also used to improve hair health and reduce oxidative stress in the scalp.
A 2020 review in International Journal of Molecular Sciences noted that melatonin's antioxidant properties help protect hair follicles from damage caused by free radicals.
When choosing a topical melatonin treatment, look for:
Always patch-test new products before full application to check for irritation.
Melatonin is well-known for its role in regulating sleep. If you're curious about its calming effects beyond hair health, explore can melatonin calm you down.