Marisa Plescia
Abstract
The formulation of SPF products, particularly those containing inorganic sunscreens such as zinc oxide, requires a multifaceted strategy to optimize both efficacy and consumer aesthetics. Key factors such as spreadability, uniform dispersion, and film-forming ability significantly influence the overall performance and protection level of these formulations. This demonstration utilizes black light technology to visually assess and compare various SPF mineral formulations and dispersions. By highlighting how formula techniques affect coverage, this demo emphasizes the role of even distribution and continuous film formation in achieving target SPF values. Through this visual approach, formulators can better understand the relationship between formulation properties and the resulting UV protection, leading to more effective mineral sunscreen products.
Bio
Marisa Plescia is an experienced cosmetic chemist with extensive expertise and education, having received degrees and completed coursework in both the USA and Europe. She has earned four graduate degrees in Cosmetic and Fragrance Science, Business, and STEM education, graduating from both the University of Cincinnati Cosmetic Science program and ISIPCA in France. As the founder of FemChem Beauty, a R&D and formulation consultancy, Marisa leverages her years of experience as a formulator to innovate and create. A dedicated member and volunteer in the Society of Cosmetic Chemists, she was the Twin Cities SCC Chair (2020-2022), the NextGen Committee Chair (2020), and will serve as the President of the Board of Directors for the SCC in 2026. Marisa has written articles on cosmetic chemistry as seen in trade publications, and has been quoted and featured in numerous magazines and newspapers, including in the Washington Post and New York Times. Marisa is extremely passionate about cosmetic chemistry and living her childhood dream of a career as a cosmetic chemist.