Jaw Slimming / Face Slimming (Masseter Botulinum Toxin)

Botulinum toxin injected into the masseter (chewing) muscles to slim and narrow the lower face and soften a square jawline. At Estemedic MUDr. Ilona Karasová places the toxin through a fine needle so the bulky masseter muscles relax first and then gradually reduce in size, refining the contour of the lower face. Unlike upper-face wrinkle treatment the slimming effect is gradual, building over several weeks, and many people also notice reduced jaw tension if they clench or grind. The effect lasts several months before periodic repetition. The treatment starts from 8,000 Kč and is non-surgical with no downtime.

Masseter botulinum toxin, often called jaw or face slimming, targets the paired masseter muscles at the angle of the jaw. When these chewing muscles are enlarged — through clenching, grinding or natural anatomy — they can give the lower face a wide, square appearance. By injecting botulinum toxin into the masseters, their activity and over time their bulk are reduced, so the muscles slim and the jawline looks narrower and more tapered. At Estemedic the treatment is performed by physician MUDr. Ilona Karasová, who assesses the muscles and agrees the dose; pricing starts from 8,000 Kč and is finalised at consultation. The injection itself is quick and uses a fine needle into each masseter. Unlike upper-face wrinkle treatment, the slimming effect is gradual: the muscle is relaxed first and then progressively reduces in size over several weeks as it is used less, with the contouring result becoming visible over that period. The effect is temporary, lasting several months before the muscle slowly recovers, so periodic repetition maintains the result; many people also notice reduced jaw tension if they clench or grind. Aftercare follows standard botulinum toxin advice — avoid massaging the area and avoid sauna, solarium and intense exercise on the day. The treatment suits adults who want a softer, more oval lower-face contour, or who have a strong, bulky jawline, without surgery. It is not performed during pregnancy or breastfeeding, and the doctor reviews suitability and any contraindications beforehand.