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I saw your clinical picture (attachment removed to protect patient identity).
These are not moles. These are called dermatosis papulosa nigra (DPN). It a genetic condition, runs in families. These have to be removed individually.
- Radiofrequency cautery.
- Co2 laser.
- Chemical peel.
Schedule an appointment with a dermatologist for this procedure.
I am very sorry there is no measure to prevent it from appearing since it is a genetic condition. However, gentle facial scrubs may help some individuals. Take care.
For more information consult a dermatologist online --> https://www.icliniq.com/ask-a-doctor-online/dermatologist