Clinical Testing of Cosmetics and Cosmetic Claims Substantiation
Depending on the manner of brand communication, i.e. the client's requirements, it is possible to conduct various tests in order to substantiate the claims being communicated for that product.
For example, if it is communicated that the product is allergen free and that it is dermatologically tested, then it is necessary to perform an analysis of all the known allergens expected in the product, as well as dermatological tolerance tests. Furthermore, if it is communicated that the product has a sun protection factor, then it is necessary to prove it by appropriate tests. It is also possible to conduct the following tests to prove efficacy: measurement of biochemical parameters such as firmness and elasticity, hydration level, cellulite, intensity of wrinkles, luminosity, level of skin pigmentation before and after use, and customer satisfaction survey.
The most common dermatological tests we conduct in our laboratory
- Dermatological semiocclusive epicutaneous test (25 subjects with allergological history)
- Dermatological semiocclusive epicutaneous test - expanded (50 subjects, of which 25 with allergological history)
- Dermatological occlusive epicutaneous test (25 subjects without allergological history)
- Use test under dermatological control (50 subjects)
- Measurement of skin color / melanin before and after application of the product (20 subjects)
- Measurement of erythema / redness of the skin before and after application of the product (20 subjects)
- Topological examination of skin surface smoothness and skin surface photographs before and after product application (10 subjects)
- Analysis of skin hydration before and 2h, 4h and 8h after product application (10 subjects)
- Analysis of skin hydration before and after product application (10 subjects)
- Measurement of transepidermal water loss before, immediately and 24h after product application (10 subjects)
- Measurement of transepidermal water loss before and 28 days during product administration (3 controls) (10 subjects)
- Measurement of skin elasticity before, immediately and 24 hours after application of the product (10 subjects)
- Measurement of skin elasticity before, immediately and 28 days during product application (3 controls) (10 subjects)
- Measurement of skin pH before and after product application (10 subjects)
- Instrumental measurement of skin smoothness before and after product application (10 subjects)
- Measurement of body and / or scalp skin flaking before, immediately and 24 hours after application of the product (20 subjects)
- Measurement of body and / or scalp skin flaking before and 28 days during product application (3 controls) (20 subjects)
- Testing the effectiveness of cosmetic products, 3D imaging of the skin before, after and during the application of the product - hyperpigmentation claims (20 subjects)
- Testing the effectiveness of cosmetic products, 3D imaging of the skin before, after and during the application of the product - acne claims (20 subjects)
- Testing the effectiveness of cosmetic products, 3D imaging of the skin before, after and during the application of the product - pore size and appearance claims (20 subjects)
- Testing the effectiveness of cosmetic products, 3D imaging of the skin before, after and during the application of the product - redness claims (20 subjects)
- Analysis of comedogenicity of cosmetic products (10 subjects)
- Measurement of sebum secretion on skin and / or scalp before and after product application (20 subjects)
- Measurement of sebum secretion on skin and / or scalp before and 1h, 3h, and 5h after product application (20 subjects)
- Measurment of hair growth for 28 days during product use (3 controls)