Production of Cosmetic and Deodorants

Welcome to class!

In today’s class, we will be talking about the production of cosmetic and deodorants. Enjoy the class!

Production of Cosmetic and Deodorants

Process of cosmetic production

Products can be either an oil-in-water or water-in-oil emulsion, consisting of emollients and lubricants dispersed in an oil phase, and a water phase containing emulsifying and thickening agents, perfume, colour and preservatives. Active ingredients are dispersed in either phase depending on the raw materials and the desired properties of the end product. A typical manufacturing process would be as follows:

Flake/powder ingredients, such as acetyl alcohol and stearic acid, sometimes dry blended in advance, are dispersed into the oil phase. Heating may be required to melt some of the ingredients.
Active ingredients are dispersed in the appropriate phase.
The water phase, containing emulsifiers and stabilizers such as Vee gum or Carbopol, is prepared separately.
The two phases are then mixed to form an emulsion. This is aided by heating to between 110 – 185℉ (45 – 85℃) depending on the formulation and viscosity.
Mixing is continued until the end product is homogeneous.

The problem

Using conventional agitators, several problems can be encountered:

Some ingredients can form agglomerates which conventional agitators cannot break down.
Hydration of thickening and suspending agents is one of the most difficult of all mixing operations. Agglomerates can easily form and some ingredients require shear to develop their desired properties.
When adding powdered ingredients to the vessel, partially hydrated materials can build up on the vessel wall and parts of the agitator.
Agitators cannot easily form stable emulsions even when the oil and water phases have been heated.
Long process times and additional equipment are often required to achieve a homogeneous product.

The solution

Intermediate stages of production can be eliminated, product quality improved and processing times dramatically reduced by using a silver son High Shear mixer. The advantages of the Silver son High Shear mixer stem from the 3-stage mixing/shearing action generated by the precision machined work head. Operation is as follows:

Stage 1:

The vessel is charged with the “continuous” phase. The mixer is started, and the solid/powdered ingredients are then added. The powerful suction created by the high-speed rotation of the rotor blades draws both liquid and solid ingredients into the work head where the are rapidly mixed.

Stage 2:

The solids are broken down in the precision-machined rotor/stator work head. The micronized powders and other ingredients are fully dispersed into the liquid before being forced out through the stator and circulated into the body of the mix. At the same time, fresh material is drawn into the work head.

Stage 3:

Once the powdered ingredients have been fully dispersed in the “continuous” liquid phase, the “dispersed” phase can be added to form the emulsion. The high shear mixing action of the rotor/stator work head ensures that the emulsion is uniform and stable.

Advantages

Consistent product quality and repeatability.
Agglomerate-free mix.
Stable emulsion.
Rapid mixing time.
The maximized yield of raw materials as thickening agents are fully hydrated and other ingredients fully dispersed.

In our next class, we will be talking about the Regulatory Control of Cosmetic Products In Nigeria. We hope you enjoyed the class.

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Production of Cosmetic and Deodorants