Yes. A simple invert is usually not enough because color negative film includes an orange mask. After inversion, the image often shows a blue or blue-green cast.

A practical manual fix is:

1. Scan with a bit of the unexposed film edge still visible.
2. In your editor, use Levels/Curves eyedroppers.
3. Use the white eyedropper on the unexposed orange film base so that area becomes white before/while correcting tonal balance; after inversion this corresponds to black.
4. If the image still has a cast, find something in the photo that should be neutral gray and use the gray eyedropper on that area to neutralize the remaining tint.

If multiple negatives were shot on the same film stock and scanned the same way, the same correction may work well across several frames, so save or repeat the adjustment settings if your software allows it.

Free editors such as GIMP can do this manually with levels tools. There are also plugins/tools for negative conversion, but the core idea is neutralizing the film base and then correcting any remaining color cast.