The student has effectively incorporated relevant and appropriate source material in their essay, considering aspects such as L’Oréal's performance, ethical actions, products, and marketing. They have also implemented effective in-text citations, demonstrating concern for academic honesty and integration of sources. Additionally, the student has incorporated external sources to set the topic within a greater business context, considering luxury customers, ethical companies, competitors, and the beauty industry. Furthermore, the essay maintains an academic and analytical level, using technical or subject-specific terms only when necessary and providing clear explanations for each. Overall, the student has demonstrated a strong understanding of the topic and maintained an appropriate tone and style throughout the essay.