F Devlieghere1, A De Loy-Hendrickx1, M Rademaker2, P Pipelers2, A Crozier3, B De Baets2, L Joly4, S Keromen5. 1. Laboratory of Food Microbiology and Food Preservation, Department of Food safety and Food Quality, Part of Food2Know, Ghent University, 9000, Ghent, Belgium. 2. Department of Mathematical Modeling, Statistics and Bioinformatics, Ghent University, 9000, Ghent, Belgium. 3. L'Oréal Research and Innovation, 94550, Chevilly-Larue, France. 4. L'Oréal Direction Générale des Opérations: Packaging & Development, 93600, Aulnay-sous-bois, France. 5. L'Oréal Cosmétique Active International: Packaging, 93600, Saint Ouen, France.
Abstract
OBJECTIVE: A new protocol is described for assessing the efficacy of the dispenser of some packaging systems (PSs) of preservative-free cosmetic products in protecting both their contained formula and their delivered doses. METHODS: Practically, aiming at mimicking contacts with a non-sterile skin or fingers, the dispensing system is put into contact with a pre-contaminated fabric by a standardized colonization of P. aeruginosa. RESULTS: When applied to three different types of packaging, results show clear differences in both criteria between these conditioning articles, that is variable efficacies in protecting the contained product and the delivered doses, knowing that the first aspect is of paramount importance. CONCLUSION: The proposed protocol is proved being able to discriminate between different PSs and provides information on strong and weak features of certain types dispensing technologies prone to efficiently decrease either the dose contamination or to prevent contamination in reaching the contained product. Therefore, the proposed protocol can contribute to an objective selection of a PS for protecting a cosmetic care product with a low content of preservative or preservative free.
OBJECTIVE: A new protocol is described for assessing the efficacy of the dispenser of some packaging systems (PSs) of preservative-free cosmetic products in protecting both their contained formula and their delivered doses. METHODS: Practically, aiming at mimicking contacts with a non-sterile skin or fingers, the dispensing system is put into contact with a pre-contaminated fabric by a standardized colonization of P. aeruginosa. RESULTS: When applied to three different types of packaging, results show clear differences in both criteria between these conditioning articles, that is variable efficacies in protecting the contained product and the delivered doses, knowing that the first aspect is of paramount importance. CONCLUSION: The proposed protocol is proved being able to discriminate between different PSs and provides information on strong and weak features of certain types dispensing technologies prone to efficiently decrease either the dose contamination or to prevent contamination in reaching the contained product. Therefore, the proposed protocol can contribute to an objective selection of a PS for protecting a cosmetic care product with a low content of preservative or preservative free.
Authors: Noureddine Halla; Isabel P Fernandes; Sandrina A Heleno; Patrícia Costa; Zahia Boucherit-Otmani; Kebir Boucherit; Alírio E Rodrigues; Isabel C F R Ferreira; Maria Filomena Barreiro Journal: Molecules Date: 2018-06-28 Impact factor: 4.411