252 JOURNAL OF THE SOCIETY OF COSMETIC CI-IEtV[ISTS Essential oils known to cause a degree of irritation when in cream but not necessarily acutely: Bitter almond oil 3lace oil Caraway oil Neroli oil Cassia oil Orange sweet oil Cedarwood oil Patchouli oil Celery oil Peppermint oil Cinnamon oil Pimento oil Cloves oil Pine oil Cypress oil Rosemary oil Eucalyptus oil Sage oil Ginger oil Sandalwood oil Lemongrass oil Sassafras oil Limes oil Thyme oil Synthetics known to cause irritation in creams: Acetaldehyde Aldehyde C.8-C.20 Aubepine Benzylidene acetone Benzyl alcohol Borneol Cuminic aldehyde Diethyl phthalate Dimethyl benzyl carbinol Ethyl acetate Ethyl alcohol Eugenol Heliotropine Hydroxycitronellal Bromstyrol Butyl alcohol Carvacrol Cinnamic aldehyde Citral Citronellal Iso-propyl alcohol Menthol Methyl cinnamate Methyl heptin carbonate Methyl phenylacetaldehyde Musk xylol Phenylacetaldehyde Thymol Essential oils known to cause discoloration in creams: Bay oil N•roli oil Birch tar oil Sweet orange oil Cassia oil Patchouli oil Cedar oil Pimento oil Cinnamon oil Sage oil Cloves oil Vetivert oil Lavender oil It is safe to presume that most of the absolute oils and gum resins will cause discoloration in creams.

THE ART OF THE PERFUMER 253 Synthetics known to cause discoloration in creams: Anisic alcohol Benzylidene acetone Benzyl alcohol Benzyl iso-eugenol Cinnamic aidehyde Citrai Eugenol Heliotropine Indole Iso-eugenol Methyl' anthranilate Nerolin Nitro musks Phenylacetic acid Quinoline Skatol Vanillin (ethyl and methyl) There are, of course, many others, but these are the main offenders. Essential oils known to have irritating effects in toilet soaps: Bitter almond oil Orange oil Cassia oil Patchouli oil Cinnamon oil Peppermint Cloves oil Pimento oil Estragon oil Pine oil Eucalyptus oil Rosemary oil Ginger oil Sage oil Lemon oil Sandalwood oil Lemongrass oil Sassafras oil Lime oil Thyme oil Mace oil Synthetics known to have irritating effect in toilet soaps .' Acetaidehyde Aldehyde C.8-C.20 Aubepine Benzylidene acetone Benzyl alcohol Borneol Bromstyrol Butyl alcohol Carvacrol Cinnamic aidehyde Citrai Citronellai Cuminic aidehyde Diethyl phthalate Dimethyl benzyl carbinol Ethyl acetate Ethyl alcohol Eugenol Heliotropine Hydroxy citronellai Iso-propyl alcohol Menthol Methyl cinnamate Methyl heptine carbonate Methyl phenylacetaldehyde Musk xylol Phenylacetaidehyde Thymol