Cosmetics & household products testing


We offer the full analysis required for checking the quality of cosmetic products to conform with European and international laws. Our service is part of a quality process to ensure safety, quality and finally the efficacy and claims objectivation of cosmetics products.

Microbiological tests

  • Total aerobic plate count
  • Staphylococcus aureus
  • Pseudomonas aeruginosa
  • Candida albicans


 Challenge tests - Preservation efficacy tests
Many of cosmetics such as make-up or shampoo to cleanse, perfume protect our skin. But how do we know that the products we apply are safe? A new ISO standard will help evaluate the antimicrobial protection of cosmetics. The new standard, ISO 11930:2012, Cosmetics – Microbiology – Evaluation of the antimicrobial protection of a cosmetic product, will help test their effectiveness in safeguarding consumers. We provide challenge tests according to the new standard.


Patch tests

Patch testing is a way of determining if a product that comes in contact with the skin will cause inflammation of the skin. The test is carried out with 20-25 probants. The skin is assessed after 48 and 72 hours from the moment of their application. The test is carried under the supervision of dermatologist.


Application tests

We offer research, aimed at checking the properties of a cosmetic preparation according to the manufacturer's declaration.We have professional equipment from Courage + Khazaka electronic GmbH, which ensures accurate results, is necessary to confirm marketing statements.

Our range includes analysis of:
  • hydrating level (measurement of the electric skin capacitance usin a Corneometer)
  • TEWL (evaluation of the cutaneous barrier by analysing the trans epidermal water loss using a Tewameter)
  • efficacy of firming (we determine the elasticity of the skin after applied by suction using a Cutometer)
  • The depth of wrinkles (efficacy of anty-aging)
  • Efficacy of sebo-regulation and matifying (Sebumeter)


Determination of UVB sun protection factor (SPF) in vivo in accordance with EN ISO 24444 : 2010 and FDA guidelines.

The determination of SPF is based on a comparison of the minimum erythema dose to the skin protected with the tested product with the minimum value of erythema dose to unprotected skin . The measurement is performed on 10 healthy adult volunteers . Evaluation is carried out after 24 hours of exposure to UV light ( simulator SOLAR Light Co. XPS 200 Xe).  
Documents required for the determination of SPF :
  • certificate of microbiological purity,
  • negative dermatological test results.
The necessary sample size to carry out the research is 100ml . The test duration depends on the real degree of SPF value ( 2 to 4 weeks from the start date). In addition, we can offer water resistance testing of cosmetics and sunscreens of photoallergy and phototoxicity studies.


Safety assessment

Safety assessment is prepared in the light of current legal regulations, including the international requirements of authorities and associations and own professional experience of the safety assessor, and takes into account the accuracy of the materials used, their toxicological profile, their structure, physicochemical features, the examination of a ready product and level of exposure.

For more information please contact us at hamilton@hamilton.com.pl


Hamilton On-Line




     We are pleased to announce that the Microbiological Laboratory of J.S. Hamilton Hungaria Kft. on the 16th of November 2016 received the accredited status by the National Accreditation Authority (NAH) under the registration number NAH-1-1801/2016 and was registered until 15th November, 2021.


Besides being a Full Member of the International Laboratory Accreditation Cooperation (ILAC), the National Accreditation Authority (NAH) has also received the subscription right and has signed the Multilateral Agreement (EA MLA) of the European Accreditation (EA), so the analyses of the Microbiological Laboratory are accepted not only in Hungary but also abroad.


The National Food Chain Safety Office has licensed the operation of the Microbiological Laboratory on the 27th June, 2016 under the registration number 131/2016/Lab/NÉBIH.