BEAUTRIUM Siam Centerpoint is a cosmetics shop on the G floor of Centerpoint of Siam Square in Pathum Wan, Bangkok. It carries drugstore brands and luxury brands, with cosmetics, skincare and perfume in one place, including small-size perfumes. Staff check scalp condition and personal colour to help pick a dye shade, and tax-free application is available. Lipstick testers are often empty and restocking is slow.