Question

question 3 of 10
a(n) ____________ depends on high - frequency mechanical oscillations of up to 30,000 hz, which lift impurities from the pores as they exfoliate the skins surface and brighten the complexion.
select the correct response:
rotary brush
ultrasonic spatula
magnifying lamp
brushing machine

Explanation:

Ultrasonic spatulas use high - frequency mechanical oscillations (up to 30,000 Hz) for skin exfoliation, lifting impurities from pores and brightening complexion. Rotary brushes, magnifying lamps, and brushing machines do not operate on this principle.

Answer:

ultrasonic spatula