How does Botox stimulate hair growth?

Botox stimulates hair growth primarily by reducing tension in the scalp, which in turn allows for increased blood flow to the hair follicle regions. Andrew Huberman explains that Botox, or Botulinum neurotoxin, works by inhibiting the release of neurotransmitters from nerve cells, leading to a reduction in muscle contraction. This mechanism is utilized in cosmetic applications to smooth wrinkles by relaxing hyperactive muscles. Similarly, when applied to the scalp, Botox helps relieve the muscle tension or 'squinting' of the scalp. This relaxation potentially improves blood supply to the hair follicles, creating a more favorable environment for hair growth 1.

However, it's important to note that the application of Botox for hair growth should be done by skilled professionals to avoid adverse effects commonly referred to as "Botox fails." These can occur if the Botox injections are administered improperly, either too deeply or in incorrect amounts. Therefore, professional application is crucial for safe and effective results 1.