What might be a sign of an infection in a nail service?

Discoloration and swelling are key indicators that an infection may be present during a nail service. When there is an infection, the affected area often exhibits redness, warmth, and swelling due to inflammation as the body's immune response kicks in. Additionally, discoloration, which can appear as a yellow, green, or darkened hue, is often seen as a direct result of bacterial or fungal growth.

In contrast, a shiny surface, while it may suggest a well-polished nail, does not indicate any issues related to infection. Similarly, dry cuticles are typically a sign of dehydration or lack of moisture, rather than infection. Lastly, a color change in nail polish could be due to various factors such as aging, wear, or chemical reactions, but it is not a reliable sign of an infection in the nail or surrounding area. Therefore, recognizing discoloration and swelling is crucial for identifying potential infections during nail services.