Quality Evaluation: An Enrichment and Extension on the Experiment of Facial Toner Preparation

• Qian Zhang ^[1] ; Mingyuan Li ^[1] ; Jie Liu ^[1]
  1. [1] Liaocheng University

     Liaocheng University

     China

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 100, Nº 12, 2023, págs. 4890-4894
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • This article describes an enrichment and extension of a published applied chemistry experiment involving the use of distilled fragrant compounds of natural plants to prepare facial toner. The original protocol failed to consider quality evaluation of the self-prepared facial toner. Herein, an additional experimental section is included for cosmetic inspection with respect to heavy-metal residues and microbial contamination. As a comprehensive chemical experiment for upper-division undergraduates, it is very popular and suitable for further popularization under the trend of decreasing class hours and increasing laboratory hours.