"Ingredients" means the substances added to tobacco during the manufacturing process or from agricultural practices.

The definition of "ingredients" is significant because the Minister of Health is authorized to prohibit the addition and use of any harmful constituent or ingredient in the production of tobacco products.

"Harmful constituent" means nicotine, tar or any other constituent of a tobacco product or of tobacco smoke which the Minister may, under section 4(a), prescribe.

The definition of "harmful constituent" is significant because the Minister of Health is authorized to prohibit the addition and use of any harmful constituent or ingredient in the production of tobacco products.