Abstract
Objective: Cosmetics are composed of a variety of chemical compounds and are typically applied to the skin for purpose of cleaning, improvement of skin conditions and also body odor, as well as enhancing beauty. Since 2004, there has been an animal testing restriction on completed cosmetic goods in the EU, and in 2013, a marketing ban for all animal toxicity experiments, including skin sensitization tests, went into effect. ECVAM has created and verified three different in vitro and one in-chemico method for skin sensitization tests.
Material and Method: The In-chemico method known as Direct Peptide Reactivity Assay (DPRA) is used. The test's objective is to aid in the evaluation of chemicals' potential to cause skin sensitivity. An essential process in allergies is thought to be haptenization, in which a low molecular weight substance called haptens creates a covalent bond with proteins in the skin. Therefore, the evaluation of the skin sensitization potential of chemicals is based on data from peptide reactivity tests, such as DPRA. Our study's goal was to build up the DPRA in accordance with the guidelines by using compounds known for their sensitization potency.
Result and Discussion: Our DPRA study's susceptibility classification of cosmetic compounds produced results that agreed with those of earlier in-vivo and ex-vivo tests on these substances. In order to demonstrate that, the DPRA approach can distinguish between irritation and allergy, sodium dodecyl sulfate (SDS) was used in this study, which has a strong irritation feature. A more accurate estimate of the sensitization potential can be achieved by integrating the best results from two or more methods. The weight-of-evidence technique should be used in conjunction with information from various sources rather than using it as a stand-alone strategy. As a result, a differentiation between sensitizing and non-sensitizing chemicals can be understood.