White patches on the face are common, with the most typical being pityriasis alba or pityriasis versicolor. These conditions are generally related to a lack of vitamins, trace elements, or fungal infections on the skin's surface. These types of patches are usually vague, with unclear boundaries and may also have some fine scales on them. The second type of white patch is vitiligo, which is usually much whiter. When examined under a Wood's lamp, they appear bright white and have irregular edges, with a tendency for the patches to expand over time. Another type of white patch is the nevus depigmentosus, which is congenital and present from birth. These patches generally do not expand and are not particularly white. If there is any uncertainty, it is best to consult a dermatologist at a reputable hospital and have it confirmed with a Wood’s lamp or a dermatoscope.