Question

A typical skin cream consisting of stearic acid, potassium hydroxide, glycerin, water, preservative and perfume, would be commonly known as: 

• A. Cold cream
• B. Vanishing cream
• C. Foundation cream
• D. All purpose cream

Answer 1

The Correct Option is B

The question asks about a typical formulation for a skin cream consisting of specific ingredients: stearic acid, potassium hydroxide, glycerin, water, preservative, and perfume. We are tasked with identifying the common name of this type of cream from the given options.

Explanation of Ingredients:

• Stearic Acid: A fatty acid used as an emulsifying agent, which helps to blend oil and water components.
• Potassium Hydroxide: A caustic alkali used to neutralize the fatty acids to form soaps, providing a creamy texture.
• Glycerin: A humectant that attracts moisture to the skin, keeping it hydrated.
• Water: The base and solvent in which other ingredients are dissolved.
• Preservative: Prevents microbial growth to extend the shelf-life of the product.
• Perfume: Provides a pleasant fragrance.

Analysis of Options:

1. Cold Cream: Typically composed of water, mineral oil, and waxes like beeswax. Cold creams are emulsions of water and certain fats, primarily used to smooth skin.
2. Vanishing Cream: Contains stearic acid, glycerin, and other components like potassium hydroxide, which are responsible for a moisturizing effect. Once applied, these creams seem to 'vanish' into the skin, leaving it smooth.
3. Foundation Cream: Usually contains pigments to even out the skin tone along with a moisturizing base, but the primary ingredients are focused on coverage rather than specific base materials like potassium hydroxide or stearic acid.
4. All Purpose Cream: While versatile, these creams are usually more generalized and might not specifically consist of the mentioned formulation and are often a mix of moisturizing and protective components.

Conclusion:

The combination of stearic acid, potassium hydroxide, and glycerin is characteristic of Vanishing Cream, which absorbs into the skin and leaves a non-greasy feeling.

Therefore, the correct answer is: Vanishing cream.