Plump up thinning hair with the redken cerafill dense fx hair diameter thickening treatment a treatment styler for all hair types an instant re boot for thinning hair the treatment styler will rapidly plump each hair strand to create volume and density enriched with ceramides and filloxane which strengthens the hair fibres and prevents breakage the thickening treatment will create the look and feel of fullness the breakthrough formula also contains sp 94 which nourishes the scalp and pr