What it is and why it's in the formula
Clove bud oil (Eugenia caryophyllus) has a distinctive warm scent and is used in cosmetic formulas at low concentrations. It's named specifically in the essential-oil sensitivity notice, so a patch test is worth doing before regular use, especially for anyone with a known sensitivity to clove or eugenol.
Patch test first: Clove Bud Oil is a genuine essential oil named in PureNail Pro's essential-oil sensitivity notice. Apply a small amount to a small area of skin and wait 24 hours before your first full application. Discontinue use and consult a doctor if irritation, redness, or discomfort develops.
Where it fits in the full formula
Clove Bud 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.