This document discusses the role of fragrances in opaque and transparent soaps. It notes that opaque soaps initially have a stronger scent that dies out quicker, while transparent soaps use milder fragrances that maintain integrity longer. Transparent soaps also allow for more fragrance variety. Factors like cost, longevity, stability, and consumer acceptance must be considered. The document then explores how fragrances work within the soap structure, the classes and examples of fragrances used, and factors that can cause fragrance instability and discoloration in the soap.
3. Comparing Opaque And Transparent
Soaps
Stronger scent in opaque soaps initially but it dies
out.
Milder fragrances used in Transparent soap .
Integrity of fragrance maintained in Transparent
soaps
Variety of fragrances that can be used much
higher in Transparent soaps
4. Aspects That Need To Be Considered
Cost
Longevity Soap Consumer
of
Perfumer Acceptance
Fragrance
Stability
6. Some Fragrances are
solubilized within the soap
structure.
Different perfume components
partition into different areas of
the Soap system.
The soap system forms a sort of
cage for the perfume and this
helps in controlling its diffusion
7. Various Classes of Fragrances Used in
Soaps
Class of Fragrance Examples
Woody Cedarwood, Sandalwood,
Floral Rose, Jasmine, Lavender
Fruity Passion fruit, Orange, Apple,
Strawberry
Animalistic Musk , Ambergris
Citrus Lemon , Lemongrass
Herbal Aloe , Basil
Sweet Peppermint, Clove
12. Factors Which Create Instability In
Soap Fragrances
Light
Temperature
pH Values
Presence of Iron (when reaction done in non SS
equipment )
Packaging
13. Result Of Instability
(Discolouration of Soap)
Fragrance Discolouration
Nitro musks Photodiscolouration
Vanillin Severe Black colour
Citral Yellowish-Brown
Colour Formed
Eugenol Brown Colour Formed
14. References-
Cosmetics,Soap,Perfumes- Poucher
Essential oils- Guenther
Aroma Chemicals-
Perfumes-Kirk and Othmer
Chemistry Of Perfumes- Charles Sell
Journal Of Advances in Perfumery- Bedenkin
Chemistry and Technology of Flavors And
Fragrances - Rowe