Hyperhidrosis Botox is used to treat excessive sweating (hyperhidrosis). By injecting botulinum toxin into the sweat glands, it inhibits sweating and is highly effective in reducing sweat. Typically, it is applied to areas such as the armpits, palms, and soles. The effects start to gradually appear within 2-3 days after the treatment, and the maximum results can be seen within 1-2 weeks. The effects generally last for 2-3 months, so for continuous results, it is recommended to have a follow-up treatment within 3 months.