Use the INCI name and then you just have to make a judgement call around where to place it in the list.
For example if your formula is
Water 80%
Glycerin 2%
Emulsifying Wax NF (INCI: Cetyl Stearyl Alcohol, Polysorbate 60) 5%
Prunus Armeniaca (
Apricot) Kernel
Oil 10%
Fragrance 1%
Phenoxyethanol 1%
Extracts 0.5%
Sodium Benzoate 0.5%
The water and apricot oil would come before the emulsifying wax but then you need to take a guess at the ratio of cetyl stearyl alcohol and polysorbate 60. The cetyl stearyl alcohol will be higher than the polysorbate 60 because it is listed first. Lotioncrafter offers a similar (the same?) product and specifies that the cetyl stearyl alcohol is (70-80%) and polysorbate 60 (20-30%). A good estimate for the ratio would be 75:25. Which means 3.75% Cetyl stearyl alcohol and 1.25%.
So your ingredient listed would be
Water (Aqua), Prunus Armeniaca (
Apricot) Kernel
Oil, Cetyl Stearyl Alcohol, Glycerin, Polysorbate 60, Phenoxyethanol, Fragrance, INCI Name for Extracts, Sodium Benzoate.
Hope this helps