More often than not, you're going to happen upon these stains once they've really set in. And so with some experimentation I have found the perfect method to refluffmy beloved robe. Depending upon the size of your garment it can take anywhere between 30 minutes to 6 hours to completely fix the matted sherpa. There are a variety of methods you can use to remove dirt, oil, and sweat from your shirt collars. Use this spray bottle to wet and soften the area that you are going to be brushing. For a yellow stain on white faux fur, try gently rubbing it with a paste of baking soda, water, and a few drops of rubbing alcohol, then rinse by dabbing it with a moistened cloth.