Unveiling the Birth of Beauty Neck Cream: A Journey of Integration of Science and Precision

Step 1: Core - Formula design and strict selection of raw materials

The starting point of the processing flow is not the workshop, but the laboratory. The R&D team will design a scientifically reasonable formula based on the characteristics of neck skin, such as thin skin and susceptibility to horizontal stripes. The formula will precisely specify the proportion of each ingredient, including:

Water phase raw materials: such as deionized water, hydrosol, moisturizers (glycerin, sodium hyaluronate, etc.).

Oil phase raw materials: such as various plant oils (shea butter, jojoba seed oil, etc.), moisturizers.

Emulsifier: responsible for stably fusing water and oil phases together to form a cream.

Active ingredients: such as peptides, retinol derivatives, niacinamide, etc., aimed at targeted improvement of neck skin condition.

Anti corrosion system: Ensure the safety of the product within its shelf life.

All raw materials must undergo strict quality inspection before being stored to ensure their purity, safety, and effectiveness meet the standards.

Step 2: Key - Accurate Weighing and Preprocessing

According to the formula, the operator will use a high-precision electronic balance in an independent weighing room to accurately weigh each raw material. This process requires extremely high standards, and even small errors can affect the quality of the final product.

After weighing, some raw materials need to be pretreated:

Oil phase heating: Put the oil phase raw materials (such as grease, emulsifiers, etc.) into an interlayer of the emulsifying pot, heat it to 75-85 ℃, and completely melt it.

Water phase heating: Pour the water phase raw materials (water, moisturizer, etc.) into another layer and heat it to a temperature similar to that of the oil phase.

The purpose of this step is to reduce the temperature difference between the two phases, making the subsequent emulsification process smoother and more stable.

Step 3: Soul - Emulsification and Homogenization Process

This is the most crucial step in the production of neck cream. Put the preheated oil and water phase raw materials into the main emulsifying pot under vacuum conditions for mixing.

Preliminary stirring: At a certain stirring speed, the water phase and oil phase are initially mixed.

High speed homogenization: start the homogenizer (a high-speed shearing device), under the strong shear force, the oil phase is dispersed into extremely small particles, evenly and stably distributed in the water phase (or vice versa, forming O/W or W/O lotion), forming a fine, smooth and stable paste. A vacuum environment can effectively prevent the generation of bubbles and prevent the oxidation of raw materials at high temperatures.

The quality of the emulsification process directly determines the texture, stability, and skin feel of the neck cream.

Step 4: Caution - Cooling and Adding Active Substances

After emulsification and homogenization are completed, cooling water is introduced into the interlayer of the pot to slowly reduce the temperature of the paste to 40-45 ℃. This is a critical temperature window, as excessively high temperatures can damage the structure and efficacy of many active ingredients. At this temperature, carefully add the heat labile active ingredients (such as polypeptides, vitamin C, some plant extracts, etc.) and essence into the pot, and stir well.

Step 5: Inspection - Semi finished product testing

Before filling, take a small amount of semi-finished paste for multiple rapid tests, such as:

PH value test: Ensure that its acidity and alkalinity are consistent with the weakly acidic environment of the neck skin, mild and non irritating.

Viscosity testing: Ensure that the paste reaches the designed viscosity.

Heat and cold resistance test: evaluate product stability.

Only after passing the inspection can we proceed to the next stage.

Step 6: Termination - Filling and Packaging

The paste is transported through pipelines to fully automatic or semi-automatic filling lines. The machine will accurately inject a quantitative amount of paste into pre cleaned and disinfected bottles and cans, and complete steps such as capping, labeling, boxing, and coding (production batch number and date). The entire filling and packaging environment usually requires a cleanliness standard of 100000 to prevent microbial contamination.

Step 7: Guarantee - Finished product inspection and factory delivery

The pre filled neck cream will not be immediately available for sale. They need to be sent to the sample retention room for stability observation for several days to several weeks. At the same time, the quality inspection department will select finished products for microbiological testing (total bacterial count, mold and yeast, etc.) and physical and chemical index testing to ensure that each batch of products meets the national safety technical specifications for cosmetics.