Efficacy Tests of Cosmetic Products

The primary purpose of efficacy testing of cosmetic products is to evaluate the effectiveness of the product when applied according to product instructions in order to verify product claims.

Developing a new product goes through a long and difficult process before it is marketed and sold to consumers. An effectiveness test must be conducted to show that a product does what it claims. Efficacy testing is an important part of product discovery.

Efficacy testing of cosmetic products before the product is placed on the market ensures: is the product safe, fit for purpose and what effect does it have? Depending on the product, various efficacy tests may be performed to determine that the product meets certain criteria. The results of a successful test can be used to provide evidence to the relevant authority regarding the effectiveness of a product.

Cosmetics must be safe within the framework of relevant legal regulations. For this, certain analyzes must be made on cosmetic products. The basic tests that must be performed for a safe cosmetic product are:

• Physical analysis. Depending on the qualities of the product and the technology used in production, physical properties such as color, odor, appearance, pH value, density and viscosity must be analyzed.
• Stability test. Stability tests are important, especially for products with a shelf life exceeding 30 months, in order to prove that a cosmetic product continues to perform its initial functions and be safe under normal conditions.
• Heavy metal analyses. Heavy metal contents in raw materials used especially in colored cosmetic products such as blush and lipstick must be analyzed. Heavy metal analyzes that must be performed in cosmetics are lead, cadmium, mercury, arsenic and antimony.
• “Does not contain” and claim tests: If a cosmetic product contains statements or claims such as “paraben-free”, “silicone-free” or “phthalate-free”, relevant analyzes must be carried out to prove this in accordance with the current legal regulations.
• Microbiological analysis. Cosmetic products must be microbiologically safe. Microbiological analyzes are important for all cosmetic products, except for hair dyes and a few similar low-risk cosmetic products. Especially baby products and products that come into contact with the eye area are at greater risk in this regard. Total bacteria and mold yeast analysis, especially pathogens, must be performed.

In addition to these tests and analyses, protective effectiveness tests are tests that show the effectiveness of preservatives used in cosmetic products against microorganisms. Preservative effectiveness testing is a procedure in which a product is tested by exposure to certain types of bacteria and fungi to determine whether it is adequately protected. Evaluation of preservative effectiveness is necessary throughout the intended shelf life of the product in question.

In these tests, test organisms represent those likely to emerge as contaminants during use and consist of Gram-positive and Gram-negative bacteria, mold, and yeast. Organisms are inoculated into product samples, either as single or mixed inoculum, and aliquots are removed at appropriate intervals to identify survivors. Interpretation of data is normally based on pharmacopoeia or other official protocols. Efficacy testing is done at the beginning, during and at the end of the product's shelf life.

Efficacy testing also ensures that the packaging and marketing of a product accurately reflects the product's intended use and claim. It investigates the benefits or harms a cosmetic product may cause when used by humans.

Generally, effectiveness measurement is performed after the effectiveness test. In product testing, effectiveness measures the production of an effect, while efficacy determines how well the product will work in the real world. Efficacy tests are performed in controlled situations (laboratories). For example, antioxidant tests for cosmetics are an effectiveness test.

Among the numerous tests, measurements, analyses, and evaluations provided to businesses by our organization are efficacy testing services for cosmetic products.