Irregular results frequently originate from uneven gel application; use well-fitted trays and avoid overfilling to prevent streaks

https://archeruitq354.fotosdefrases.com/the-ultimate-guide-to-expert-teeth-whitening-what-to-expect

Patchy outcomes often originate from unequal gel application; use well-fitted trays and prevent overfilling to avoid streaks, gum inflammation, and wasted item.