The Sinesia No Yellow Mask is a specialized treatment conditioner designed to neutralize unwanted yellow or brassy undertones in blonde, bleached, or naturally gray hair. This product works to deposit violet pigments, effectively canceling out brassiness while simultaneously conditioning the hair fibers. It helps maintain a cool, vibrant tone, leaving hair feeling soft, manageable, and looking noticeably brighter. Ideal for regular toning maintenance, this mask provides deep conditioning benefits alongside its color-correcting properties.