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Definition of Vanishing Cream:
Vanishing cream is a lightweight, oil-in-water emulsion; because of that, the water phase evaporates, and the oil-based active ingredients are absorbed by the skin. So it causes a non-greasy finish upon application. That's why it's called vanishing.It's commonly used as a moisturizer, makeup base, or to provide a smooth texture to the skin.
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Example of Vanishing Cream:
Most cosmetic moisturizer creams are vanishing creams. Brands like Ponds, Nivea cream [just for example].
Preparation of Vanishing Cream:
Basic Ingredients
- Stearic Acid: Primary emulsifier and thickener.
- Glycerin: Acts as a humectant, drawing moisture into the skin.
- Alkali (e.g., Potassium Hydroxide or Triethanolamine): Neutralizes stearic acid to form soap, stabilizing the emulsion.
- Water: Serves as the continuous phase in the emulsion.
- Emollients (e.g., Lanolin, Cetyl Alcohol): Enhance skin feel and moisturization.
- Preservatives (e.g., Methylparaben, Propylparaben): Prevent microbial growth.
- Fragrance and Colorants: Optional, for sensory appeal.
Sample Formulation (Per 100g)
- Ingredient Quantity (% w/w)
- Stearic Acid 18%
- Glycerin 3%
- Lanolin 2%
- Triethanolamine 1%
- Methylparaben 0.18%
- Propylparaben 0.02%
- Rose Water q.s.
- Purified Water 75.8%
Preparation Procedure:
- Oil Phase: Melt stearic acid and lanolin together at approximately 60°C.
- Aqueous Phase: In a separate container, dissolve glycerin and triethanolamine in purified water. Heat this mixture to around 60°C.
- Emulsification: Gradually add the aqueous phase to the oil phase with continuous stirring to form an emulsion.
- Cooling: Continue stirring the emulsion until it cools down to about 40°C.
- Additives: Incorporate preservatives, fragrance, and any colorants while stirring gently.
- Packaging: Once the cream reaches room temperature and achieves the desired consistency, transfer it into suitable containers for storage.
Evaluation Parameters
- Appearance: Should be white and homogeneous.
- Odor: Mild, pleasant fragrance.
- pH: Between 4.5 and 6.5, suitable for skin application.
- Texture: Smooth and non-greasy.
- Spreadability: Should spread easily without leaving a sticky residue.
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