Here's a breakdown of factors that affect whether they'll stay on:
* Application: A proper application is crucial. Clean, dry nails before applying the press-ons will make them last longer.
* Water: Prolonged exposure to water, especially saltwater, can weaken the adhesive.
* Waves and Sand: The force of waves and the abrasive action of sand can dislodge the nails.
* Sunscreen/Oils: Exposure to sunscreen and other oils can also weaken the adhesive.
Conclusion:
There's a high chance that Impress press-on nails will come off in the ocean, especially with prolonged exposure to waves, saltwater, and sand. If you're planning to swim in the ocean, it's best to remove them beforehand or be prepared to lose them.