What is the number which is listed as the first ingredient on some bottles? May 16, 2024 17:27 Updated This is a formula number, allowing us to identify which bottle contains which formula more easily. Related articles Does AlumierMD use parabens or sulfates in their products? Does AlumierMD use synthetic dyes in their products? What is “angel dusting”? Do you use dimethicone in your products? What clinical testing was performed on AlumierMD products?