The term Elixir defines the difference of ingredients in each formulation and the type of teeth and gums condition it's suitable for: Normal OR Sensitive teeth and gums.ALL of our products contain Charcoal and Virgin Coconut Oil for brightening/whitening but each Natural Tooth Polish Elixir contains different healing ingredients and formulation %.Natural Tooth Polish Elixir 1: Suitable for NORMAL teeth and gums.The strongest formulation - Contains Bamboo Charcoal, VCO, Mint, Vitamin C & Clove Oil for added healing benefits to help with mouth ulcers/sores and bleeding gum issues.Natural Tooth Polish Elixir 2: Suitable for SENSITIVE teeth and gums.Contains Bamboo Charcoal (but less% than Elixir 1), VCO, Mint & Organic ECOCERT Certified Propolis from France for added antibacterial and anti-inflammation benefits.* We created Elixir 2 for our customers with Sensitive teeth & gums as they were unable to use Elixir 1 because it was too strong for them.Detailed description of each Elixir is available in each Natural Tooth Polish product page.