The student provides a focused and detailed description of the main topic, which is to use thin-layer chromatography to analyze the pigments in samples of different brands of lipsticks. However, the research question is confusingly phrased and lacks detail, and the background information is not well organized or focused. The methodology is highly appropriate to the topic and includes appropriate safety precautions, but the identification of the independent variable is confusing and there are not enough controlled variables listed. No ethical or environmental concerns are mentioned.
