For longevity we suggest the following
Paddle brush hair for routine maintenance and prior to styling.
Extensions are to be free of tangles by paddle brush only prior to shampooing.
Shampoos and conditioners should mention moisture, hydration and/or be sulfate free. Use as directed.
Paddle brush and let air dry overnight. Less direct heat the better!
Do not use heat over 450 degrees
Do not over process with dyes.