Matrix Biolage Re-Hab Clay Mask Stressed Sensitized Hair 14.4 Ounce 400 Milliliters Matrix Biolage R.A.W. Re-Hab Clay Mask for stressed, sensitized hair is a natural conditioning hair mask that provides deep conditioning to your damaged hair. This hair mask with kaolin clay and honeycomb provides intensive conditioning for even the most sensitized, stressed hair to rebuild hair strength. This mask for damaged hair is 95% natural-origin and 99% biodegradable.