What it is and why it's in the formula
Chia oil (Salvia hispanica) is notably high in omega-3 fatty acids, similar in role to the flaxseed oil elsewhere in the blend. It's included as part of the wider 16-ingredient mix rather than as an individually dosed active, contributing to the formula's overall conditioning character.
Where it fits in the full formula
Chia 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.