Dettol Hand Wash Original is generally safe for external use and is well-tolerated when used as directed. However, some individuals, particularly those with sensitive skin, may experience mild skin irritation, dryness, or a tingling sensation. If you observe any persistent redness, itching, burning, or allergic reactions, discontinue use immediately. Avoid contact with eyes; if contact occurs, rinse thoroughly with water. If swallowed, seek urgent medical attention.