Can I use this fir infusion in a regular shower or only in a sauna and bath?

The infusion is formulated for environments where hot water or steam helps disperse its aromatic compounds—primarily saunas, steam rooms, cedar barrels, and bathtubs. In a regular shower, you won't get the same sustained, diffused scent as in a sealed, steamy space. However, you can create a similar effect by placing a small, diluted amount in a dish on the shower floor where hot water can splash onto it, or by adding a few drops to a damp washcloth placed over a showerhead or radiator. The heat and moisture will help carry the fir aroma into the air. Be cautious, as the slick, concentrated liquid can make surfaces slippery. For consistent results and to follow the product's intended use, it is best suited for sauna, bath, or any ritual where water is heated to produce ample steam.