Cosmetics refer to chemical industrial products or fine chemical products that are smeared, sprayed or other similar methods and spread on any part of the surface of the human body, such as skin, hair, fingernails, lips and teeth, etc., for the purpose of cleaning, maintaining, beautifying, modifying and changing the appearance or correcting the human body odor and maintaining a good condition.
Cosmetics R&D needs to focus on multiple metrics to ensure the safety and effectiveness of a product. Here are some of the key metrics:
1. Safety indicators: This is one of the most important indicators, involving the safety assessment of the product's ingredients, formula, production process, microbial indicators, etc. Cosmetics developers need to ensure that their products do not contain harmful ingredients, do not cause allergic reactions, and do not produce adverse reactions such as skin irritation.
2. Efficacy indicators: Cosmetics developers need to ensure that the product has the claimed efficacy, and this efficacy can be sustained during the use period. For example, whitening products need to have a whitening effect, sunscreen products need to have a sunscreen effect, etc.
3. Stability index: Cosmetics need a certain degree of stability to ensure that the product will not deteriorate or separate during the shelf life. This includes stability in terms of color, aroma, texture, etc.
4. Sensory indicators: The sensory quality of cosmetics is very important, including color, aroma, texture, etc. Developers need to ensure that products have a good sensory experience to improve the consumer experience.
5. Preservatives and antimicrobial indicators: Preservatives and antibacterial agents are usually added to cosmetics to prevent product deterioration and microbial growth. Developers need to select the right preservatives and antimicrobials and control their content to ensure the safety and effectiveness of the product.
6. Ingredient index: The ingredients of cosmetics determine the performance and safety of the product. Developers need to select the right ingredients and conduct quality control to ensure that the content and purity of the ingredients in the product meet the requirements. 7. Microbial indicators: cosmetics may contain microorganisms, such as bacteria, molds, etc. Developers need to carry out microbial control to reduce the number of microorganisms and ensure the safety and effectiveness of products.
The contents to be monitored for the above key indicators are mainly as follows:
1. Health indicators: including the total number of bacteria, the total number of molds and yeasts, fecal coliforms, Staphylococcus aureus, Bacillus aeruginosa and other microbial indicators, as well as the limits of toxic substances such as lead, tribute and arsenic.
2. Sensory indicators: including appearance, color, aroma and other sensory indicators to evaluate the sensory quality of cosmetics.
3. Physical and chemical indicators: including heat resistance, cold resistance, pH value, foam, effective substances and other physical and chemical indicators to evaluate the physical and chemical properties and efficacy of cosmetics.
4. Chemically prohibited and restricted substances: such as diethylene glycol, heavy metals, pigments, preservatives, methanol, formaldehyde, etc.
5. Hormones: such as triamcinolone, pampanisolone, hydrocortisone, etc
6. Quinolones: such as enoxacin, fleroxacin, etc
7. Antibiotics: such as metronidine file, tetracycline hydrochloride, etc. These are the main indicators of cosmetics testing, which can help ensure the safety and effectiveness of cosmetics.
In the process of cosmetics R&D and production, an average meter or stirrer is needed to continuously stir and mix raw materials to make cream products more uniform, and different models and specifications of agitators can be selected according to actual needs. VELP's agitators include magnetic stirrers, heated magnetic stirrers, and overhead magnetic stirrers. You can choose the appropriate model according to the type of cosmetics and the viscosity of the sample.