The answer to 'upholstery greasy' is that upholstery can become greasy due to a buildup of dirt, oils, and skin cells from regular use. This can make the fabric look and feel dirty, discolored, and unpleasant. Common causes include not cleaning the upholstery regularly, spills or stains that weren't properly treated, and natural oils from skin and hair transferring to the fabric.
To address greasy upholstery, you can try DIY cleaning methods like using a mild soap and water solution, a specialized upholstery cleaner, or even a steam cleaner. However, for heavily soiled or deeply embedded grease, it's often best to call in a professional upholstery cleaning service. They have the right tools, products, and expertise to safely and effectively clean your upholstery without damaging the fabric.