A chalazion is a lump in the eyelid that is caused by inflammation of a gland within the skin. Typically, this lump grows over days to weeks and is occasionally red, warm, or painful. The gland involved in the formation of a chalazion is a modified sweat gland that lies within the eyelid. This gland produces oil. When this gland becomes blocked, it can rupture and the inflammation process begins. A chalazion is not a sty. A sty can resemble a chalazion in the sense that it is also a lump in the eyelid. However, a sty involves glands and eyelash hair follicles that are closer to the skin surface of the eyelid. In addition, a sty is usually more painful and looks infected.

Because a chalazion eventually becomes inflamed, red, warm and painful it should be expected to respond to an activated charcoal poultice. Activated Charcoal poultices are known to reduce inflammation and pain associated with different skin infections such as shingles, cellulitis and boils (abscess). We would also suggest using a activated charcoal poultice for a sty.