Tackle the appearance of thin looking hair with redken cerafill retaliate hair redensifying treatment featuring cerafill system technology the treatment strengthens fibre to prevent breakage and energises hair follicles to re densify hair helping to improve the density of your thinning hair in only 3 months the invigorating thickening system contains 5 stemoxydine that will leave you with the appearance of thicker looking hair benefits daily treatment with stemoxydine proven to create den