32 Questions
What are the preferred and most common types of masks based on?
Smectite and kaolin clay combinations with and without gums and polymers
What is a concern associated with the latex face mask?
It may pose a health concern
What has replaced the vinyl resin masks?
Facial strips containing fast-drying resins
What do the hydrocolloid masks lack compared to clay masks?
Luxurious feel and following
What is an essential characteristic of a contemporary mask according to the text?
It should produce a tightening or therapeutic sensation
Which of the following is NOT an essential consideration in formulating a contemporary mask?
Having an earthy odor
What is a requirement for the feel of skin, hair, or scalp after using a contemporary mask?
No perceptible modification
What characteristic must a contemporary mask NOT possess?
Gritty particles
What are the primary ingredients of a clay mask?
Bentonite and kaolin clays
What have bentonite gels been described as in relation to the skin?
Soothing
What is a significant role of bentonite in dermatological preparations?
Treating acne
What is a characteristic of bentonite in water?
It forms a colloidal dispersion
What is the most significant step in formulating the mask with bentonite?
Proper hydration of the bentonite
What influences the viscosity of the bentonite dispersion?
Addition of electrolytes
What may result from failure to properly hydrate the smectite clay in the mask formulation?
Formula instability
What does bentonite do to suspend particulates in the mask formulation?
Suspends particulates
What is the most significant step in formulating a mask with bentonite?
Proper hydration of the bentonite
What influences the viscosity of the bentonite dispersion?
The addition of electrolytes
What characteristic does bentonite impart to the mask formulation?
Suspended particulates
What may result from failure to properly hydrate the smectite clay in the mask formulation?
Formula instability and separation
Why are rubber-based face masks not currently popular?
They may cause contact dermatitis due to residual accelerators
What is the most serious concern associated with natural rubber latex in face masks?
It can cause severe allergic reactions
What is the purpose of deproteinized natural latex in face mask formulation?
To minimize the risk of allergic reactions
Why are rubber masks not perceived as 'natural'?
Due to the presence of residual accelerators causing contact dermatitis
What is the primary film-former in vinyl masks?
Polyvinyl alcohol
What sensation do vinyl masks not provide, unlike clay masks?
Psychological sensation
What has effectively replaced vinyl masks for pulling out impurities and blackheads?
Hydrocolloid masks
What are contemporary face strips primarily made from?
Hydrocolloid
What is the primary function of hydrocolloid masks?
Providing a sensation of tightness through gel shrinkage
What is the main purpose of adding common humectants to hydrocolloid masks?
Enhancing the film's plasticity
What distinguishes hydrocolloid masks from clay masks?
Lack of sensation of tightness
What contributes to the sensation of tightness provided by hydrocolloid masks?
The shrinking of the gel upon dehydration
Explore the different types of facial masks, including clay-based masks, wax masks, latex face masks, and facial strips. Learn about their application, feel, and potential health concerns.
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