Patchy results typically originate from irregular gel application; use well-fitted trays and avoid overfilling to prevent streaks

https://devinjdan182.cavandoragh.org/whitening-for-sensitive-teeth-how-we-reduce-discomfort

Patchy outcomes often originate from irregular gel application; use well-fitted trays and prevent overfilling to avoid streaks, gum irritation, and squandered product.