Allergies have a long term relationship with the dryness of the mouth. Dry mouth can be caused by several factors such as a decrease in body fluids or the effects of certain medications that are used to treat allergies.
Allergies or allergic reactions are a result of a hypersensitive immune response of the body towards a foreign substance referred to as an allergen. When individual components of a toothpaste initiate such a type of immune response, it is called as toothpaste allergy.
Essential oils are one of the best and safest ways to treat allergies. Some of the effective essential oils for allergies are lavender oil, peppermint oil, tea tree oil, eucalyptus oil, basil oil, lemon oil, etc.