Watsons Siam Center is a pharmacy and beauty store selling medicine, makeup, skincare, haircare, and both local and imported products. It sits on the second floor of Siam Center, at the edge of the food court on the Siam Paragon side. The store carries a wide range of products and generally keeps good stock on hand. Pharmacists and staff communicate in English, and the pharmacy counter is sometimes unattended when the pharmacist is away.