How is long spots on the face after washing your face with white vinegar to return a responsibility

My brother-in-law washed his face with white vinegar kick ass , and then unevenly whitened it here and there dildo vibrator , so he stopped using white vinegar to wash his face. After a period of time, his face became very dark and had many spots. Is this a side effect?
Condition analysis: It is possible that vinegar acid can promote the metabolism of epidermal cells, but it may also cause skin irritation and pigmentation.
Guidance: It is recommended to stop washing your face with vinegar, apply vitamin a and e creams appropriately anal vibrator , and take a large amount of vitamins orally to dilute spots.