Final answer:
Makeup brushes used for makeup application should be disinfected once a week.
Step-by-step explanation:
The correct answer is B) Once a week.
Makeup brushes used for makeup application should be disinfected once a week.
This is important to prevent the accumulation of bacteria, dirt, and oils on the brushes, which can lead to skin breakouts and infections.
Regular disinfection helps to maintain the cleanliness and effectiveness of the brushes, ensuring a smoother and more hygienic application of makeup.