The sun protection factor (SPF) of cosmetics is through the use of:Sunlight simulatorConduct the test. Xenon lamp units provide direct and window glass daylight to filter daylight or daylight simulations of artificial lights in stores, making it the right choice to test cosmetics for light and solar exposure. The cosmetic sample to be tested is placedSunlight simulatorThis simulator is able to simulate the ultraviolet radiation of real sunlight. Then, a specialized instrument is used to measure the UV absorption capacity of the sample at different SPF values. Through these tests, the SPF of a cosmetic product is determined and it is ensured that it provides effective sun protection.
theseSunlight simulatorUV lamps of specific wavelengths and intensities are often used to simulate sunlight to ensure the accuracy and repeatability of the test. During the test, a spectrometer is used to measure the sample's ability to absorb UV light at different wavelengths. This data helps determine the SPF value of a cosmetic product and ensures that it provides adequate sun protection at different UV wavelengths.
PassedSunlight simulatorTesting to ensure that the SPF value of a cosmetic product meets its claimed sunscreen efficacy and that users receive adequate UV protection when using it. These tests also help to guarantee the quality and safety of the product. In addition, in order to ensure that the sun protection effect of cosmetics lasts, water resistance tests are conducted. The sample was applied to an artificial** model and exposed to simulated water for a certain period of time before its sun protection capacity was measured. This test simulates whether cosmetics are effective in protecting ** from UV rays when people swim or sweat.
In addition to sun protection tests, other safety and quality tests are also carried out on cosmetics. For example, cosmetics are tested for any harmful substances, such as heavy metals and allergens. Irritation and allergy testing is carried out to ensure that cosmetics are safe for the majority of the population.
Sunlight simulatorIn order to ensure the stability of the product, stability tests are conducted. This includes exposing cosmetic samples to laboratory environments under different temperature and humidity conditions to assess whether their shelf life and quality can be maintained.
To sum up, the SPF of cosmetics is through the use ofSunlight simulatorConduct the test. These tests include not only measurements of sun protection effectiveness, but also other safety, quality, and stability considerations. Through these tests, it is possible to ensure that the cosmetic product has effective sun protection and is safe and harmless to the user.