Over 2015, IDEA worked on the development of a revised QRA methodology (QRA2), focusing on total exposure of consumers to individual fragrances. For this purpose, a joint academia/industry IDEA working group has reviewed the uncertainties where a safety assessment factor (SAF) is warranted and the scientific basis for the assignment of each SAF value. Moreover, an aggregate exposure model based on actual consumer use of products which involves the utilization of these SAF values has been developed.