Botulinum Toxin — Excessive Sweating (Hyperhidrosis)

Botulinum toxin injected into hyperactive sweat glands is a well-established dermatological approach to primary hyperhidrosis — excessive sweating of the armpits, palms or soles that doesn't respond to standard antiperspirants. At Aaron Laser, the procedure is performed by the clinic's specialist dermatologists using fine needles to distribute the toxin across the affected area. The toxin temporarily blocks the acetylcholine signal that triggers eccrine sweat glands, reducing perspiration markedly for around 6–8 months. Because the glands are not destroyed, sweating returns gradually as nerve signalling recovers, and repeat sessions are safe.

Primary hyperhidrosis — excessive sweating out of proportion to physiological need — affects roughly 2–3 per cent of the population and can significantly limit daily activities, social confidence and professional interactions. When topical antiperspirants and lifestyle adjustments prove insufficient, botulinum toxin injection into the affected skin zone is a recognised medical treatment with well-documented efficacy. At Aaron Laser, this procedure is carried out by the clinic's dermatovenereology specialists, who are experienced in both the medical and aesthetic applications of botulinum toxin. The target areas most commonly treated at this clinic are the axillae (armpits), but the palms and soles of the feet can also be addressed. The treatment mechanism is the same as for aesthetic wrinkle correction: the toxin temporarily inhibits the release of acetylcholine at the neuromuscular and neuroglandular junctions, blocking the signal that drives eccrine sweat gland secretion. Because the glands are not ablated, sweating slowly returns as the nerve terminals regenerate, typically over 6–8 months. In the interim, patients typically experience a dramatic and consistent reduction in perspiration in the treated zone. The injection session itself takes only a few minutes once the physician has mapped the area and checked for contraindications. Fine needles are used and multiple small punctures are placed in a grid pattern across the affected skin; no anaesthetic is generally required for axillary treatment, though palmar injections may be more sensitive and can be performed with topical anaesthetic on request. Post-procedure care is straightforward — no dressings, no downtime, and normal activities can resume immediately. The physician will advise on the expected response timeline and schedule a follow-up to assess efficacy, typically at 2–4 weeks.