Ideal Properties of Shampoo
- Ease of Application
- Easy Wet Combing
- Low Level of Irritation
- Well Preserved
- Good Stability
Ease of Application: The shampoo should be viscous enough to stay in the hand before application to the hair and scalp, yet during the application, the shampoo must spread easily and disperse quickly over the head and hair.
Rinsing: The shampoo should rinse out easily and should not leave a residual tackiness or stickiness. It should not precipitate in hard water since insoluble calcium and magnesium salts form a dulling film on the hair.
Easy Wet Combing: After rinsing the hair should be combed through easily without tangling.
Manageability: The hair should be left in a manageable condition when combed dry. There should be no fly-away or frizziness.
Luster: The hair should be left in a lustrous condition.
Body: The hair should have a body when dry, that is hair should not be limp or over-conditioned.
Fragrance: A fragrance should be used that not only covers any objectionable odor due to components used to formulate the shampoo but which develops a clean refreshing scent during shampooing and leaves a clean residual scent on the hair. This could be a major factor in consumer acceptance of the product.
Low Level of Irritation: The formulator should try to accomplish all of the above qualities while keeping the irritation level as low as possible.
Well, Preserved: The product must be properly preserved against bacterial and fungal contamination.
Good Stability: The product should have good stability for at least two or three years at room temperature as well as when stored in daylight or warehouses with low or high ambient temperatures.
Economical: The product should not be over-formulated. The formulation should be as simple as possible using only those raw materials that are necessary to accomplish the desired goal.
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