The Rootist BioBrew's Fermented Strengthening Serum Spray is a game-changer for hair care routines. While it's crucial not to overapply to prevent any greasiness, steering clear of the roots is key. However, the benefits outweigh this cautionary note. With just the right amount, this serum transforms your hair routine. Say goodbye to frizz and hello to a smooth, shiny finish that looks and feels impeccably treated. Plus, brushing becomes a breeze, making it a must-have for anyone looking to elevate their hair game. After a week of using the entire Rootist system, my hair has a luxurious salon-treated appearance, accompanied by a delightful and pleasant aroma. Highly recommended for those seeking a high-quality and efficient hair care experience. **This review was collected as part of a promotion.