Those rolls of hay are called round bales.. The price varies depending on the kind of hay (grass or legume), its quality and on the supply/demand in the region where it's being sold.
Semi-permanent hair color has smaller molecules than temporary dyes. These dyes only partially penetrate the hair shaft. For this reason, the color will survive repeated washing, typically 4â5 shampoos or a few weeks.
Semi-permanent color usually lasts from 6-12 shampoos. Demi-permanent hair color, on the other hand, uses a mild, creamy developer (typically from 3 to 7 volume peroxide) to process the color on the hair.