White Patches On Face, Almond Oil, Dry Skin

hello, I have white spot or can be said white patches on my cheeks(Face around lips and nose) It s visible from last 4-5 month and now I am feeling that now white spot are increasing. Before 1 year I have same 2-3 spot on face but i used almond oil and it s gone in few weeks. I thought when ever i went to swimming pool or whole day spend at out side than it s happened. So now days my skin tone is become with white and black(original skin) spot. I want solution to make my skin even and look healthy. I have dry skin type. This happened on face only and other part of my body have good skin quality. I used to take biotin tables but didn t work.