The main downsides of XERF (a dual-frequency radiofrequency skin-tightening treatment) are that results are modest and gradual, effects are temporary, and costs are high.

Limitations and Drawbacks
Modest and gradual results: Changes develop slowly over months as collagen rebuilds, rather than offering an instant transformation.
Not permanent: Aging continues naturally, meaning maintenance sessions are required to preserve results.
Ineffective for severe sagging: It works best for mild-to-moderate laxity and cannot correct advanced skin sagging or significant volume loss.
High out-of-pocket cost: Treatments are cosmetic and not covered by insurance, typically ranging from $1,300 to $3,000 per session.

Side Effects and Risks
Temporary skin reactions: Common minor effects include mild redness, warmth, swelling, or tenderness that usually fades within hours.
Rare complications: Less common risks include blistering, burns, bruising, scabbing, or temporary pigment changes.