Imagine a skincare product that feels as light as a whisper on your skin, leaving no trace behind. That’s the magic of vanishing cream, and today, we’re delving into the fascinating world of vanishing cream formulation—no complex jargon here – just a friendly conversation about the science behind this enchanting beauty secret.
A. Introduction
Greetings, skincare enthusiasts! Have you ever wondered about the mysterious vanishing cream that promises a flawless finish? Today, we embark on a journey to unravel the secrets behind the formulation of this beauty elixir.
B. Properties of Vanishing Creams
- It should have an excessive melting point.
- It should be pure white.
- It should possess very little odor.
- It should have a lower iodine content.
C. Ingredients of Vanishing Creams
D. Method of Preparation of Vanishing Creams
- Stearic acid was melted in a container using a water bath.
- Potassium hydroxide dissolved in water and glycerine is added and heated to the temperature of 75°C.this is called aqueous phase.
- Slowly add the aqueous phase to the melted stearic acid.
- Perfume is added to the preparation when it attains 40°C.
E. Evaluation of Vanishing Creams
The following methods evaluate Vanishing creams:
- In-vitro method
- In-vivo method.
1. In-Vitro Method of Evaluation:
Tests are conducted to assess the product’s performance. Various instruments have been used by the investigator to evaluate the effect of temperature and humidity. Different instruments used in Vanishing Cream Formulation in the in-vitro method are as follows:
- (a) Tensilestrengthtester
- (b) Hargen’s Gas Bearing Electron dynamometer (GBE)
- (c) Occlusivepotentialofingredient
- (d) Gravimetric analytical method
- (e) Thermal analytical method
- (f) Electrical methods.
(a) Tensile strength tester:
This method helps determine the tensile property of the exercised stratum corneum of the skin. The stress or strain characteristics of stratum corneum obtained from various sources can be studied using this instrument.
(b) Hargen’s gas-bearing electro-dynamometer:
It determines the visco-elastic behavior of the skin. It also determines the effect on the skin. It is used in both in-vitro and in-vivo tests.
(c) Occlusive potential of ingredient:
The occlusive potential of raw materials or components used in the formulation of the creams is determined by knowing the water diffusion rate.
(d) Gravimetric analytical method:
This method aids in establishing a relationship between the water content present in the stratum corneum and relative humidity.
Water content = Dry weight of the tissue – Equilibrium value.
(e) Thermal analytical methods:
Various thermal analytical methods provide information about the effect of temperature, which causes a change in the stratum corneum.
(f) Electrical methods:
Various electrical properties such as capacitance, impedance, and dielectric constant are measured by electrical methods to provide information about the Variation in the water content within the stratum corneum of the skin.
2. In-Vivo Method of Evaluation:
Different instruments used in Vanishing Cream Formulation in the in-vivo method are as follows:
- (a) Transpirometry
- (b) Scanning Electron Microscopy (SEM)
- (c) OpticalMicroscopyandMacrophotography
- (d) Skin friction
- (e) Sensitivity test.
