"Surface stains" refer to marks or discolorations that appear on the outer layer of an object, such as a tooth, fabric, or a surface. These stains are not deeply penetrated and only affect the superficial layer. Full definition
My dentist friend also advised me that activated charcoal will only work on surface stains that it is able to bind to, especially those from drinks like coffee and tea. (wellnessmama.com)
After a professional in - office treatment, over the counter products can be employed every couple of months to dump new surface stains. (pillowspot.com)
After a professional in - office treatment, over the counter products may be employed every few months to dump new surface stains. (pillowspot.com)