What are the processes involved in finding a cosmetics manufacturer to produce neck cream

The production process of neck cream usually includes steps such as raw material pretreatment, mixing and emulsification, homogenization, cooling, and filling. The following is a specific introduction:

Raw material preparation and pretreatment: Accurately weigh various raw materials according to the formula, such as plant extracts, moisturizers, moisturizers, emulsifiers, thickeners, etc. For some solid or insoluble raw materials, pre-treatment may be necessary, such as heating dissolution, grinding refinement, etc., to ensure their uniform dispersion in subsequent processes.

Oil phase preparation: Oil soluble raw materials such as ethyl hexyl palmitate, squalane, and tocopherol acetate are placed in a container, heated and stirred to fully mix and melt them. The heating temperature is generally around 65 ℃ -70 ℃, the stirring speed is 40r/min -50r/min, and the stirring time is about 20min -30min to prepare a uniform oil phase system, which is kept warm for later use.

Water phase preparation: Water soluble raw materials such as butanediol, 1,2-pentanediol, sodium hyaluronate, and allantoin are added to water, heated and stirred evenly. The heating temperature is usually between 60 ℃ and 80 ℃, and the mixture is stirred at a speed of 40r/min-50r/min for 20min to 30min to form a water phase system.

Mixed emulsification: Slowly add the prepared oil phase to the water phase while stirring, usually using a vacuum emulsifier for this operation. During the addition process, maintain a certain stirring speed, such as 20r/min-30r/min, to fully mix the oil and water phases. Then it is heated to 80 ℃ -85 ℃, and homogenized emulsification is carried out. The homogenization time is 8 min -10 min, so that the lotion becomes fine and even.

Vacuum degassing: after the emulsification is completed, keep the vacuum state, the vacuum degree is -0.1MPa to -1.0MPa, and keep it at a constant temperature for 10min-15min to remove the air in the lotion, prevent bubbles from forming during the use of the product, and also help to improve the stability of the product.

Cooling: cool the emulsified material to 42 ℃ -48 ℃. At this time, some temperature sensitive active ingredients, such as plant extracts and essence, can be added, and continue to stir evenly. Then further cool down to 35 ℃ -40 ℃ and let it stand for 10h-16h to ensure the product is fully stable.

Quality inspection: Conduct quality inspection on the cooled neck cream, including appearance, color, odor, pH value, viscosity, microbial indicators, etc., to ensure that the product meets relevant standards and requirements.

Filling and packaging: Fill the qualified neck cream into specific packaging containers such as hoses, bottles, etc. through a filling machine, and then perform packaging processes such as labeling and boxing to finally obtain the finished neck cream.

The above data is sourced from the internet and is for reference only. The specific processing situation needs to be analyzed on a case by case basis