; and (ii) among the ingredients that are present in the cleaning product at a concentration that is less than 1 percent, without regard to the order of predominance by weight. (3) Fragrance concentration determination For purposes of the requirements under paragraph (1)(A) and subsection (c) with respect to a cleaning product, the manufacturer of the cleaning product shall determine the total concentration of each fragrance allergen that is present in the cleaning product by adding the contributions of the fragrance allergen in each ingredient in the product, including the presence of the fragrance allergen in any fragrance or essential oil that is present in the product. (4) Nomenclature systems (A) In general An intentionally added ingredient or fragrance ingredient that a manufacturer is required to list under this subsection and post under subsection (c), except for an ingredient for which the use of a generic name is permitted under subsection (d), shall, subject to subparagraph (B), be listed or posted using the following nomenclature systems: (i) Household and Commercial Products Association Consumer Products Ingredients Dictionary. (ii) International Nomenclature of Cosmetic Ingredients. (iii) International Union of Pure and Applied Chemistry nomenclature. (iv) Chemical Abstracts Index name. (v) Common Chemical name. (B) Clarification For the purposes of subparagraph (A), a manufacturer shall— (i) if a name is available in a system described in clause (i) or clause (ii) of that subparagraph, use the name from either such system