Here's why:
* Growth: As your natural nails grow, a gap will appear between the acrylic and your cuticle. This can become unsightly and also creates a pocket where moisture and bacteria can get trapped, potentially leading to infections.
* Balance: The shift in the balance point of the nail as it grows out can make the acrylic more prone to breaking or lifting.
* Appearance: Refills help maintain the desired length, shape, and color of your acrylic nails.
Ultimately, the best timing for your refills or reapplication will depend on how quickly your nails grow and how well you care for them.