A Study to Measure the Efficacy of a Toothpaste on Dentinal Hypersensitivity

Inclusion Criteria: * Male and female subjects aged 18 years and older. * Willing and physically able to carry out all study procedures. * Willing and able to give written informed consent and complete a medical history form. * Have at least one hypersensitive tooth in two quadrants, which are anterior to the molars and demonstrate cervical dentine, which have an air-blast hypersensitivity score of 2 or 3 on the Schiff sensitivity scale at Screening and Baseline and a tactile hypersensitivity score of 10-20 grams of force at baseline. * Willing to comply with the oral hygiene and food and drink restrictions. Exclusion Criteria: * Subjects who have used anti sensitivity products in the 4 weeks prior to screening * Subjects with an active oral ulcer (Aphthous ulcer), or have similar experience within past 1 month. * Subjects who use a powered toothbrush at least 4 times a week to brush their teeth * Subjects whose indicator teeth have abnormal oral pathology, for example: * Extensive restorations. * Observable caries. * Observable cracked enamel. * Leaking fillings or other restorations. * Cracked Tooth Syndrome * Suspected pulp pathology/abscess/pulpitis. * Atypical facial pain * Any tooth surface adjacent to those surfaces under investigation, which in the opinion of the investigator have any other condition(s) that provide confusing symptoms to those of cervical dentine hypersensitivity. * Currently undergoing dental treatment, including orthodontic treatment. * Subjects who have had vital bleaching within 4 weeks of the screening visit * Known allergies to any toothpaste ingredients, including the flavour components. * Obvious physical disability reducing tooth brushing ability. * Receiving concomitant medication/therapy that might affect dentine hypersensitivity, e.g. regular use of analgesics, anti-histamines, non-steroidal anti-inflammatory drug and selective serotonin reuptake inhibitor medication * Severe gingivitis, periodontitis and/or marked tooth mobility. * Gingival surgery in the previous six months. * In the opinion of the investigator unable to comply fully with the trial requirements. * Participation in other dental clinical trials in the previous 28 days * Subjects who have participated in an dentinal hypersensitivity study within the previous 1 month. * Diabetic (both Type 1 and Type 2) * Medical condition(s) and/or regular use of any medication, which either could affect the scientific validity of the study or if the subject was to participate in the study could, affect their wellbeing. * Smokers or e-cigarette use or those who have smoked/vaped in the previous 12 months * Brushing \< 10 times a week during the Run-In period (self-reported) * Using \<17g or \> 53g of toothpaste in a two week period during the test phase * The subject is an employee of Unilever or the site conducting the study.