Arkansas Esthetician Practice Exam

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What do chelating agents do in formulations?

Increase the density of the product
Increase the effectiveness of preservatives
Link amino acids in a chain
Extracted from natural sources

The correct answer is: Increase the effectiveness of preservatives

Chelating agents play a crucial role in cosmetic and skincare formulations by binding metal ions, which can help enhance the stability and effectiveness of preservatives. By sequestering these metal ions, chelating agents prevent them from catalyzing degradation reactions that could compromise the formulation. This action helps to maintain the integrity and longevity of the product, ensuring that preservatives can work optimally to protect against microbial growth. The other options do not accurately reflect the function of chelating agents. Increasing the density of a product typically involves thickening agents, not chelating agents. Linking amino acids is a function of peptides or similar compounds, which is distinct from the role of chelating agents. Finally, while some chelating agents can be derived from natural sources, this statement does not encompass their primary function in formulations. Therefore, the focus on enhancing the effectiveness of preservatives aligns precisely with the role of chelating agents.