Clairol Soy4Plex Liquicolor Permanent HaircolorSOY4PLEX conditions the entire hair inside and out. It smoothes the outer layer and penetrates the cortex to deliver deep conditioning that you can really feel.Miss Clairol is reinvented! Introducing new Clairol Professional liquicolor permanente. The same shade results and 100% gray coverage you expect from Miss Clairol. Guaranteed!* Now with SOY4PLEX for up to 84% more deep conditioning than the leading professional cream.