Botox®, Dysport®, Xeomin® and Jeuveau® are FDA-approved medicines obtained from botulinum toxin for both men and women used to temporarily improve the appearance of moderate to severe frown lines both between the brows and crow’s feet. It is a purified protein safely used in medicine for over 40 years. Botox is injected into muscles and works by blocking nerve signals that direct those facial muscles to contract during facial expression. By blocking this contraction, these cosmetic medicines relaxes wrinkles and prevents new ones from forming. For both prevention and relaxation of wrinkles, results last anywhere from 3 to 6 months.