sunblock

Dirt or sunblock remaining on one's face after making wudhu

Q:

1. After making wudhu, dirt on the cheek remains even after washing the cheek, is the wudhu valid or must the that part of the face be washed again?

2. After making wudhu, sunblock on the face remains even after washing that part of the face, is the wudhu valid?

3. After making wudhu, the dirt (like sand which you normally find when awakening from sleep) remains in the corner of the eye even after washing that part of the face in wudhu, is the wudhu valid?