Full polymerisation (cure) can take?

• A. 1-2 hours
• B. 6-12 hours
• C. 12-24 hours
• D. 24-48 hours

Answer: (D)

The key idea here is that some nail polymers don’t reach their final hardness immediately after the initial cure. The curing process can continue after the surface has set, as the chemical reaction progresses and cross-linking completes, and any residual solvents or moisture evaporate. Because this continuing reaction can take time, full polymerisation may extend to quite a while after the initial cure—often up to 24 to 48 hours for certain systems. That’s why the best answer is the longest timeframe listed: it reflects the period in which the material can finish curing and reach its maximum strength. In contrast, shorter timeframes describe the initial set rather than the completed cure, so they don’t capture the full duration needed for complete hardening.