CHEMICAL AND MICROBIOLOGICAL TESTSCosmetics should be characterized by high stability both for the entire period of their storage and during use by target consumers, in accordance with the legal regulation on cosmetics and recommendations of the COLIPA. In connection with this we offer:
preliminary stability tests
accelerated stability tests
stability tests under real conditions
determination of PAO
tests of compatibility of the mass with packaging
conduction of stability tests in non-standard conditions
maintenance tests (challange tests)
The microbiological control is a key element of the safety assessment of cosmetics and has a huge impact on the stability of the cosmetic product. In cosmetic products we perform microbiological purity tests according to the Regulation of the Minister of Health of 23 December 2002 (J. of L. No. 9 of 2003.). According to the Regulation of the European Parliament and of the Council (EC) of 30 November 2009 on cosmetic products, a responsible person is obliged to report the execution of cosmetics safety assessment prior to conducting them to the market. One of the elements of the assessment is to determine the microbiological specifications and conducting maintenance test (challenge test), so called stress tests, which involve the inoculation of the samples by selected strains of bacteria, yeasts and molds and then incubating them under appropriate conditions.
The confirmation of the effectiveness of the preservative system guarantees that the cosmetic product used for its intended purpose does not endanger the health and safety of consumers. A positive result of the challenge test ensures that the formula used in preservatives protects the formula against the proliferation of dangerous pathogens and eliminates the possibility of secondary infection of cosmetics during the use.
CHALLENGE TESTSThey are made in accordance with PN-EN ISO 11930:2012 standard. There is also the possibility of performing the challenge test in accordance with the European Pharmacopoeia and the method of the KOKO test.
DERMATOLOGICAL TESTSDermatological tests are conducted under the supervision of a dermatologist in order to demonstrate the presence or absence of irritating and allergenic properties with a patch test. Carried out for this purpose:
skin tolerance tests in the place of the application of cosmetics
contact tests (open, semi-open, closed)
assessment of photo-allergy and photo-toxicity