Dip base coat and Top coat harden from contact with step 2 Activator, moisture(water), or long air exposure. Cross-contamination can happen from acetone getting in the bottles during cleaning, leftover Activator getting on a Top Coat Brush, or dip powder getting transferred to Base coat bottles. You should also avoid exposure of liquids to air for long periods.

Dip base coat and Top coat harden from contact with step 2 Activator, moisture(water), or long air exposure. Cross-contamination can happen from acetone getting in the bottles during cleaning, leftover Activator getting on a Top Coat Brush, or dip powder getting transferred to Base coat bottles. You should also avoid exposure of liquids to air for long periods.