Collar POWER™ is a concentrated laundry pre-treatment that is very effective in removing oily dirt commonly found on the collars and cuffs of laundered shirts, usually without brushing. It aids in the removal of stains such as oily foods, cosmetics, inks, embedded soil and grime. Collar POWER works well on laundered items such as khakis and golf shirts, and is safe to most fabrics and colors. If colorfastness is questionable, test garment in a hidden area.