·Comparison
miraDry vs Brella SweatControl Patch for excessive underarm sweating
Short answer
Both target underarm sweat glands for durable reduction, but through different mechanisms and treatment burdens. miraDry uses focused microwave energy in 1-2 hour-long sessions; Brella uses targeted alkali thermolysis in a 3-4 minute patch session repeated as needed. miraDry's per-session durability is greater; Brella's individual sessions are shorter and lower-burden.
Side-by-side
| Criterion | miraDry (microwave thermolysis) | Brella SweatControl Patch |
|---|---|---|
| Mechanism | Focused microwave thermolysis destroys sweat glands | Targeted alkali thermolysis at dermal sweat-gland layer |
| FDA status | Cleared (underarm, marketed for permanent reduction) | Cleared (underarm) |
| Session length | ~60 min per session | 3-4 min per axilla |
| Typical sessions needed | 1-2 | Multiple, repeated as effect wanes |
| Per-session durability | High — gland destruction is permanent | Months; cumulative with repeats |
| Recovery profile | Swelling, tenderness, numbness; 1-2 weeks | Mild erythema, possible blistering; days |
| Anesthesia | Tumescent local anesthesia required | Topical numbing typically sufficient |
| Per-session cost class | Higher | Lower |
Which is the better fit when...
- Patient wants one-and-done if possible
- miraDry comes closer to that ideal: gland destruction is permanent, and many patients are satisfied after one or two sessions. Brella's per-session effect wanes; repeat sessions are typical.
- Patient wants the lowest-burden individual session
- Brella's 3-4 minute application with topical numbing is the shortest, lowest-burden in-office option in this class. miraDry sessions are ~60 minutes including tumescent anesthesia setup.
- Patient cannot take a week off for recovery
- Brella's recovery is typically days, not weeks. miraDry's recovery includes 1-2 weeks of underarm swelling and tenderness; the longer recovery is the main practical downside.
Both are newer underarm in-office procedures
miraDry has been available longer (FDA cleared in 2011); Brella is newer. Both are underarm-cleared and not applicable to other regions. Both occupy rung 4 of the underarm order of options alongside Botox; the choice between them is primarily about treatment-session burden vs per-session durability.
Energy delivery differs in important practical ways
miraDry delivers a higher total energy dose per session over a longer time, requiring tumescent infiltration for both anesthesia and thermal protection of the epidermis. Brella's energy delivery is shorter and lower-total; only topical numbing is typically needed, and there is no infiltration step. The mechanical differences explain why session length and recovery experience differ so much.
Frequently asked
- Is miraDry truly permanent?
- Sweat glands destroyed by miraDry do not regenerate. Most patients maintain meaningful reduction at long-term follow-up. Complete absence of underarm sweat is variable; some require a second session for additional reduction. The marketing claim of permanent reduction is supported but not equivalent to 'zero sweat for life.'
- If Brella is shorter and cheaper per session, why choose miraDry?
- Cumulative cost and burden over years can favor miraDry for patients who would otherwise need many Brella sessions. miraDry's per-session durability is the main differentiator. For patients who prefer brief in-office sessions and accept the repeat-treatment pattern, Brella is the lower-friction option.
Read each option in detail
·Related references
Read related evidence.
Treatments compared
Conditions