Brittney shares a helpful trick for dealing with dead ends in her video review. She recommends using Luseta's Keratin Smooth Hair Mask, which is color safe and free of sulfates and parabens. According to Brittney, this mask effectively replenishes proteins in the hair. She advises applying the mask to the ends of wet or damp hair, avoiding the roots to prevent greasiness. After twisting and pinning the hair, she suggests leaving the mask on for 20 minutes before washing it out. The next day, Brittney showcases her vibrant heatless curls, attributing their improved appearance to the hair mask. Overall, Brittney's review highlights the benefits of the Keratin Smooth Hair Mask, such as its protein-replenishing properties and ability to enhance hair vibrancy. However, she cautions against applying too much near the roots to avoid greasiness.