Advance Techniques Professional Hair Care Color Protection Heat Infusion Treatment for Color Treated Hair 3 tubes in box PLUS a BONUS 4th tube 0.5 fl oz each This innovative, serum-like treatment warms on contact with wet hair and scalp to infuse deep-penetrating conditioners and emollients into the hair's cuticle. As this quick burst of smoothing heat subsides and begins to cool each strand in strengthened the cuticle is resealed and smoothed, leaving hair vibrant and healthy looking.