What happens if you leave milk sitting out on the counter?

It goes bad. Bacteria and harmful stuff can begin to grow in the milk and that is not very good for you.

The reason we can add milk to our soap without it going bad is because soap goes through a chemical reaction called saponification. This reaction takes the inputs and produces soap and glycerin as the outputs. The properties of the milk are in the soap, but it's no longer milk, so it doesn't spoil or grow bacteria.

Unfortunately, lotion does not undergo this same reaction. When you add milk to lotion, it remains milk. In order to prevent harmful bacterial growth, you need to add chemical preservatives. At GMS, we do not add chemical preservatives because we do not feel that this is natural and healthy for your skin.

So instead of making a liquid lotion, GMS makes a solid lotion. This solid lotion (and lip balms) do not contain any goat milk or other liquids, so there is no liquid to grow the bacteria.