What it is and why it's in the formula
Canola oil (Brassica napus) is a light, largely neutral-scented carrier oil that helps keep the overall texture of the mist thin and quick to absorb. It's a common supporting ingredient in spray-format cosmetic formulas precisely because it doesn't compete with the other oils' scent or feel.
Where it fits in the full formula
Canola Oil is one of 16 ingredients disclosed openly on the PureNail Pro label — none of the formula sits behind vague "proprietary blend" wording. You can see the complete breakdown, including which oils pair with it, on the full ingredients page.