If you looked at your pillowcase the last time you changed your sheets and thought it was once white, you’re not alone. Pillows are often overlooked heroes of the bedroom – loyal companions to your sleep, but over time they become a collection point for everything that shouldn’t be in contact with your skin. Sweat, grease, dust, makeup residue and microscopic guests who prefer to remain unmentioned slowly discolor the fabric and reduce its freshness. And while it may seem inevitable that your pillow will turn yellow, there’s a completely natural way to restore it to that sparkling white without harsh chemicals or expensive cleaners.