... -7days for pink, and 1-4days for white Kearing erasers are used for fast erasing or amending the ... water and steaming also are instant erasers for air erasable markers. The white markers can easily be erased by ... and surroundings like temperature and humidity, etc.The white ink pen only used on dark color materials, ... offer many colors: pink, violet, blue and white etc, with different nib size:0.5 mm,0 ...