Windex applied on the glans is more harmful. Windex is a chemical substance which is strongly irritating and when applied to the glans, it may cause severe pain in the glans, redness and swelling of the glans. In some patients, it can also cause severe allergic reactions when applied to the glans, so windex is not recommended to be applied to the glans. If windex is applied to the glans, it is recommended to wash it off with water in time to prevent damage. The glans is generally sensitive, so it is recommended that you usually wash it with water and do not randomly apply medication to the glans. After applying medication to the glans, it may lead to a decrease in the sensitivity of the glans, resulting in reactive changes to the glans.