All our straighteners and tongs use Heat Boost Technology that detects a drop in heat when the products are in use and then subsequently boosts the temperature back up again to ensure maximum performance. Our best straighteners use Heat Boost 3 (which recovers at 6?C/second) and Heat Boost 5 ceramic technology (which recovers at 9?C/second) for the very best in heat up and heat recovery in the world. This ensures that the styles are easier to create and the results are better and longer lasting.