The frequency of hair Botox treatment depends on your hair's condition and the results you desire. Typically, it is recommended to do hair Botox every 2 to 4 months. This can help maintain the smoothness and shine of your hair. However, keep in mind that while applying the hair Botox treatment at home can be convenient, there can be disadvantages such as potential misuse or misapplication. It's always a good idea to consult a professional hair stylist or a salon offering Botox hair treatment near me to get personalized advice.