·Comparison

miraDry vs Brella for excessive underarm sweating

Short answer

Both use heat to reduce underarm sweating. miraDry takes about an hour and often needs one or two sessions. Brella takes a few minutes but may need more repeat visits.

Side-by-side

CriterionmiraDry (microwave sweat-gland treatment)Brella SweatControl Patch
MechanismFocused microwave sweat-gland treatment destroys sweat glandsControlled heat treatment at dermal sweat-gland layer
FDA statusCleared (underarm, marketed for permanent reduction)Cleared (underarm)
Session length~60 min per session3-4 min per axilla
Typical sessions needed1-2Multiple, repeated as effect wanes
Per-session durabilityHigh, gland destruction is permanentMonths; cumulative with repeats
Recovery profileSwelling, tenderness, numbness; 1-2 weeksMild erythema, possible blistering; days
AnesthesiaTumescent local anesthesia requiredSkin treatment numbing typically sufficient
Per-session cost classHigherLower

Mechanism

miraDry (microwave sweat-gland treatment)
Focused microwave sweat-gland treatment destroys sweat glands
Brella SweatControl Patch
Controlled heat treatment at dermal sweat-gland layer

FDA status

miraDry (microwave sweat-gland treatment)
Cleared (underarm, marketed for permanent reduction)
Brella SweatControl Patch
Cleared (underarm)

Session length

miraDry (microwave sweat-gland treatment)
~60 min per session
Brella SweatControl Patch
3-4 min per axilla

Typical sessions needed

miraDry (microwave sweat-gland treatment)
1-2
Brella SweatControl Patch
Multiple, repeated as effect wanes

Per-session durability

miraDry (microwave sweat-gland treatment)
High, gland destruction is permanent
Brella SweatControl Patch
Months; cumulative with repeats

Recovery profile

miraDry (microwave sweat-gland treatment)
Swelling, tenderness, numbness; 1-2 weeks
Brella SweatControl Patch
Mild erythema, possible blistering; days

Anesthesia

miraDry (microwave sweat-gland treatment)
Tumescent local anesthesia required
Brella SweatControl Patch
Skin treatment numbing typically sufficient

Per-session cost class

miraDry (microwave sweat-gland treatment)
Higher
Brella SweatControl Patch
Lower

Which may fit better?

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 skin treatment 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.

Two clinic treatments

miraDry has been available longer. Brella is newer. Both are for underarms only. The main tradeoff is a longer visit with results that may last longer versus a short patch visit that may repeat more often.

What each visit involves

miraDry needs numbing injections and cooling while microwave energy treats the underarm in small sections. Brella uses a heated patch and may need only skin numbing. Recovery is usually longer after miraDry.

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