About permanent hair reduction by laser. Several of the newer lasers have clearly documented that there is permanent hair reduction after each treatment. The FDA has approved three lasers for permanent hair reduction, and more results with additional lasers are pending. The results tend to be additive, i.e. more treatments lead to greater degrees of permanent hair reduction. For any given patient results cannot be precisely predicted.
Results can be variable, even with the best lasers.
Pulsed light and laser hair removal. Intense pulsed light devices can produce effective hair removal. These devices are in practice more difficult to adjust than lasers and require great expertise for their proper use. Guarantees in laser hair removal. It is impossible to predict the exact result a patient will achieve with laser hair removal, especially with regard to how many sessions a given individual will require.