Precautions: This product contains ingredients which may cause skin irritation on certain individuals and a preliminary test … Please note I use the Matrix 20 leave in conditioner as well. Yes, there is a combination of color direct dyes in the So Silver Mask to create a silver hue. So Silver Conditioner. https://www.matrixprofessional.ca/total-results/so-silver-triple-power-mask https://www.matrixprofessional.com/total-results-color-care/so-silver Matrix is the BEST and addresses all my issues. HOW OFTEN SHOULD I USE THE MASK? My hair has never felt so soft and I get compliments all the time on the color of my hair. HOW DOES SO SILVER DIFFER FROM BRASS OFF ? To maximize toning results use Total Results So Silver Triple Power Hair Mask 1-2x per week in lieu of the Conditioner. Matrix 20, So Silver Shampoo and conditioner is all my hair needs to … Depending on your desired results, you can use the mask up to 1-2X per week. https://www.hair.com/shop/hair-treatments/hair-masks/HDC10087.html