Final answer:
To tell which side is the outwardly facing side of a mask, look for a colored side, a metal nose strip at the top, brand markings, or ear loops attached to one side. For cloth masks, the finished or printed side is usually facing outward.
Step-by-step explanation:
To determine which side of a mask is the outwardly facing side, there are a few general guidelines you can follow. Surgical masks, for example, typically have a colored layer that faces outwards and is designed to repel fluids; this side is usually more vibrant or patterned. Additionally, masks tend to have a metal strip designed to mold to the shape of your nose, and this strip should be at the top of the mask when you put it on, allowing you to adjust the fit and ensuring the mask is oriented correctly. For masks with ear loops, the loops are attached to the outwardly facing side.
More specialized masks, like respirators (such as N95s), often have their brand and model numbers printed on the outside.
For cloth masks, it might be more challenging to discern, but usually, the side with a visibly stitched or folded edge is meant to be on the inside, against your face. If you're still uncertain, refer to the mask's packaging or manufacturer instructions for clear guidance on proper orientation.