Buyers must distinguish between Freeze-Dried (FD), Spray-Dried (SD), and Dehydrated powders. Freeze-dried powder retains the highest nutritional value and flavor profile, making it ideal for premium health supplements. Spray-dried powder often contains carriers like maltodextrin for better solubility, which is perfect for instant beverages. Always verify the mesh size (typically 60-100 mesh) to ensure proper texture and the moisture content, which should be below 5% to prevent clumping and microbial growth.