Salivary Gland Botox: Effects and Treatment Info, From Mechanism to Recovery

What Is Salivary Gland Botox

Salivary gland Botox is a procedure that injects botulinum toxin into salivary gland areas such as the submandibular gland. The toxin temporarily reduces activity in the salivary gland area to manage salivary gland volume, aiming to refine the under-jaw line through this process.

It is often confused with masseter Botox (jaw muscle Botox), but salivary gland Botox targets the salivary glands themselves rather than the chewing muscles, differing in both target area and approach. Since the appropriate procedure can vary depending on whether the cause of a prominent lower facial line is muscular or glandular, consultation to accurately identify the cause is recommended beforehand.

Mechanism of Action

Botulinum toxin is explained as acting on the cholinergic parasympathetic secretomotor fibers distributed in the salivary glands, inhibiting the release of acetylcholine. This action is shown to reduce salivary gland activity in a dose-dependent manner, and some academic sources report accompanying reversible changes in the ductal and acinar cells.

However, explanations related to salivary gland volume reduction or atrophy are often inferred from the toxin's mechanism of action on muscles, so the strength of evidence specifically regarding salivary gland tissue itself varies across studies. Clinical studies have confirmed reduced drooling in patients with cerebral palsy or adults with neurological conditions, and some toxin formulations have received approval from overseas regulatory agencies for treating chronic drooling. However, most of these studies focus on 'reduction in saliva production,' and should be interpreted separately from cosmetic contouring effects.

Expected Changes

Salivary gland Botox aims to help manage salivary gland volume, refine the under-jaw line, manage facial contour, and address left-right balance. However, expressions such as 'the jawline becomes slimmer' or 'the face becomes smaller' often lack sufficient cross-validated clinical evidence, so it should be kept in mind that the extent of change and perceived results vary by individual.

Effects are generally guided to appear gradually starting around 3 to 7 days after the procedure, though some materials mention it can take 3 to 4 weeks. The timing and degree can vary depending on the area, the condition of the salivary gland, and individual physical response, so they should not be regarded as absolute standards.

Procedure and Duration

The general process flow is: consultation and design of injection points, cleansing followed by topical anesthesia if needed, small divided injections by area, final touch-ups and guidance, and return to daily activities. The procedure time varies by area but is typically short, around 5 to 10 minutes, and anesthesia is not mandatory but topical anesthesia may be applied if needed.

Since fine needles are used, pain is generally guided to be mild, but the perceived level can vary depending on individual pain sensitivity.

Duration and Downtime

The effects are generally guided to last around 4 to 6 months, with variation depending on individual metabolic rate and the condition of the treated area. It is often managed by considering a repeat procedure once the effects diminish, and it is advisable to determine the exact interval by monitoring progress and consulting with a specialist.

There is generally little to no separate recovery period, so returning to daily activities on the same day is often possible. However, since mild swelling or a pressed sensation at the injection site may temporarily remain, it is best to avoid excessive pressure or massage on the day of the procedure and to monitor progress.

Post-Procedure Recovery and Home Care

Salivary gland Botox itself tends to have a short downtime, but the skin at the injection site may become sensitive due to needle stimulation and temporary swelling. During this period, avoiding products with irritating ingredients and combining basic moisturizing and soothing care to stabilize the skin barrier may be helpful.

Compared to procedures involving heat energy or physical stimulation, Botox procedures tend to cause less irritation, but developing a habit of caring for the skin's sensitive condition right after the procedure can help maintain overall skin health. During this time, it is advisable to maintain a routine centered on gentle cleansing and moisture-focused care that reduces irritation.

Difference from Masseter Botox (Square Jaw Botox)

Salivary gland Botox targets the salivary glands (such as the submandibular gland) to manage salivary gland volume, while masseter Botox targets the masseter (chewing muscle) to manage masseter volume. Both procedures are sometimes considered together by those interested in refining the under-jaw and jawline, but the suitable approach may differ depending on whether the cause of lower facial volume is muscular or glandular.

Since it is often difficult to accurately distinguish an individual's facial structure and the cause of volume through visual assessment alone, it is necessary to confirm the cause through consultation with a specialist before deciding whether and how to proceed with the procedure.

Post-Procedure Recovery: Home Care Matters

Right after salivary gland Botox, the skin around the injection site may temporarily become sensitive, so home care that minimizes irritation can be helpful. During this period, a routine like the A'PIEU Cream 2-STEP—using STEP 1 (Ultra Cera-Rich) to focus on soothing and barrier care right after the procedure, followed by STEP 2 (Hydro Re-Boosting) for continued deep moisturizing during recovery—may serve as a reference. However, this is a general suggestion for skin condition management and should be noted as separate from the procedure's own progress or effects, with individual variation.

Medically reviewed by 아비쥬의원 의료진. (September 10, 2026)