1. Assist in developing cosmetic product formulas (personal care) such as creams, lotions, and serums according to market trends and needs and make improvements to existing products.2. Ensure the quality of cosmetic raw materials such as active ingredients, preservatives, dyes, and fragrances in accordance with quality standards and industry regulations, and conduct physical and chemical property tests.3. Conduct stability testing of cosmetic products to ensure resistance to temperature and light.

Key Experience: 1. Understand the raw material preparation process involving natural zeolite and tungstic acid as catalyst precursors, including resource selection and material quality analysis.2. Investigate the steps in the synthesis of natural zeolites modified with tungstic acid, including reaction parameters, temperature and reaction time to achieve the desired zeolite structure.3. Using characterization methods such as XRD, SEM, and FTIR to analyze the crystalline structure, morphology, and identification of functional groups in modified zeolite, validating the success of the synthesis.4. Evaluates the performance of the catalyst in the esterification of levulinic acid, including observing parameters such as conversion, selectivity and catalytic stability during the reaction.

Key experience:1. Hands-on practice in operating an atomic absorption spectrophotometer, including device calibration, optimal wavelength determination, and careful sample handling to ensure accuracy of heavy metal analysis.2. Involved in validation of analytical methods, including evaluating performance parameters such as detection limits and quantification.