Botox Units Required for Hyperhidrosis (Excessive Sweating) by Body Area
| Body Area | Total Units Needed | Units Per Side | Injection Sites | Duration | Pain Level | FDA Approval |
|---|---|---|---|---|---|---|
| Underarms (Axillary) | 50–100 units | 25–50 units per side | 10–15 per armpit | 4–6 months | 🟢 Low | ✅ Yes |
| Palms (Hands) | 100–200 units | 50–100 units per hand | 20–30 per palm | 4–6 months | 🔴 High | ❌ No (Off-label) |
| Soles (Feet) | 100–200 units | 50–100 units per foot | 20–30 per sole | 4–6 months | 🔴 High | ❌ No (Off-label) |
| Scalp (Craniofacial) | 75–150 units | N/A (varied areas) | Scattered along hairline & scalp | 4–6 months | 🟡 Medium | ❌ No (Off-label) |
| Forehead & Face | 40–60 units | N/A (varied areas) | 10–20 points | 3–5 months | 🟡 Medium | ❌ No (Off-label) |
| Groin & Under-Breast | 50–100 units | N/A (varied areas) | Along skin folds | 4–6 months | 🟢 Low-Medium | ❌ No (Off-label) |
Notes:
✔ Results appear in 3–7 days, peak at 2 weeks.
✔ Repeat treatments are needed every 4–6 months.
✔ Pain levels vary—palms, soles, and scalp require numbing or anesthesia.
✔ Only underarm hyperhidrosis is FDA-approved; all other areas are treated off-label.