Final answer:
No, re-prepping the skin with isopropyl alcohol is not necessary when experiencing a wandering baseline caused by lotion. Rinsing the skin with lukewarm water is sufficient.
Step-by-step explanation:
When experiencing a wandering baseline caused by lotion on the skin, it is not necessary to re-prep the skin with isopropyl alcohol. Instead, it is recommended to use alcohol-free products and avoid any products that irritate the skin, such as harsh astringents or exfoliants. Simply rinsing the skin with lukewarm water is sufficient, while avoiding the use of very hot or cold water.