What is spreadability test?
Spreadability test Cream base should spread easily without too much drag and should not produce greater friction in the rubbing process. Spreadability was calculated using the spreadability apparatus made of wooden board with scale and two glass slides having two pans on both sides mounted on a pulley.
What is spreadability in pharmacy?
Spreadability of gels, creams, ointments and lotions is the net result of a combination of rheological contributions, of which viscosity is just one. In the study both the flow (i.e. viscosity) and structural (rigidity and strength) behaviours are compared.
How do you describe spreadability?
SPREADABILITY is the ease with which a product can be spread. It is commonly a desired characteristic of margarines, butter, jams, chocolate spreads, etc.
What is the USP definition of lotion?
9. Lotion are not defined specially in the USP but a broad definition describes then as either liquid or semi liquid preparations that contains one or more active ingredients in an appropriate vehicle.
What is spreadability of cream?
Effect of Different Phases on Spreadability. Spreadability is the ability of a cream to spread on the skin. The spreadability values were found to be in the range of 9.0 to 31.02 g·cm/s, depending on the material of each phase (Table 3).
What does topical spray mean?
A topical medication is a medication that is applied to a particular place on or in the body. Most often topical administration means application to body surfaces such as the skin or mucous membranes to treat ailments via a large range of classes including creams, foams, gels, lotions, and ointments.
Is spreadability a real word?
Ease of spreading or of being spread.
How is pH of ointment measured?
First, you have to make sure that the cream is o/w and not w/o. Only for the o/w sytem based products, you should do the pH of the finished product (as is) using a properly calibrated pH meter and then (5o% dilution with water.) This will give you the true pH of your product.
Why vanishing cream is called Vanishing cream?
Stearate skin creams were more commonly called vanishing creams because they seemed to disappear when spread on the skin. The name may have been coined by the Pond’s Extract Company, who began making a stearate cream called Pond’s Vanishing Cream in 1904.
What is a topical ointment?
How does an ointment differ from a cream?
Creams and ointments can be either medicinal or cosmetic. The primary difference between the two is the ratio between oil and water. While a cream has equal parts oil and water, ointments have about 80 percent oil.
Which is an example of the spreadability of a product?
SPREADABILITY is the ease with which a product can be spread. It is commonly a desired characteristic of margarines, butter, jams, chocolate spreads, etc. but is also an important characteristic of ointments, creams and waxes.
How is the spreadability of a sample measured?
The spreadability accessory quantifies the spreadability of samples. It consists of a set of matched male and female Perspex cones. Fill the four lower cones (female cones) with the sample using a spatula.
What should the spreadability of topical products be?
In the case of spreadability predictions for topical products, application shear rates tend to be in the upper hundreds to lower thousands of reciprocal seconds. This range is not achievable on a simple spindle viscometer but with a high-performance rheometer viscosity / shear rate profiles such as that shown below can be performed:
What causes spreadability of creams, creams and lotions?
Spreadability of gels, creams, ointments and lotions is the net result of a combination of rheological contributions, of which viscosity is just one.