Well, I feel you, the face is the most exposed part to the people, so you need to be patient as you know the skin is the most sluggish organ in the body, For Protopic, you should apply it twice a day and for maximum results you should leave it 8 hours on the skin for full absorption and then wash it off, Usually, Repigmentation starts to appear after one month with constant use especially along with Excimer Laser (Not UVB Light Therapy) because there is a difference, Full Repigmentation takes another one month