Inclusion Criteria:
* Provision of signed and dated informed consent document (and assent document, if appropriate)
* Participant is biologically male or female.
* Participant is 12 to 65 years of age, inclusive, at the time of signing the consent/assent form.
* Participant is in good general, oral and mental health with, in the opinion of the investigator or medically qualified designee, no clinically significant or relevant abnormalities in self-reported medical history, or upon oral examination, that would impact their safety or well-being, or the outcomes of the study, if they were to participate in the study, or affect their ability to understand and follow study requirements.
* Participant has a history of tooth sensitivity lasting more than six months but not more than 10 years (self-reported).
* Participant has a minimum of 2 non-adjacent teeth (incisors, canines or premolars), in different quadrants, with exposed dentin due to facial/cervical erosion, abrasion or gingival recession, and clinically confirmed dentin hypersensitivity to tactile and evaporative (air) stimuli at Screening and Baseline.
Exclusion Criteria:
* Female participant who is pregnant at Screening and Baseline, or is intending to become pregnant during the study.
* Female participant who is breastfeeding.
* Participant with known or suspected intolerance or hypersensitivity to any of the study products, any of their stated ingredients or closely related compounds.
* Participant is participating in, or has participated in, other studies (including non-medicinal studies) involving an Investigational Product within 30 days of Screening or plans to participate in other studies (including non-medicinal studies) during this study.
* Participant has participated in a tooth sensitivity study within 8 weeks of Screening.
* Participant is currently using an oral care product indicated for dentin hypersensitivity relief or care of sensitive teeth or has used an antihypersensitivity oral care product within 8 weeks of Screening.
* Participant takes daily doses of medications/treatments which, in the opinion of the investigator or medically qualified designee, could interfere with their perception of tooth sensitivity.
* Participant has had professional tooth de-sensitising treatment within 8 weeks of Screening.
* Participant has had a tooth bleaching procedure within 8 weeks of Screening.
* Participant has had dental prophylaxis within 4 weeks of Screening.
* Participant with evidence of gross intra-oral neglect or the need for extensive dental therapy.
* Participant with evidence of current/recent active dental caries or treatment for decay within 12 months of Screening.
* Participant who, in the opinion of the investigator or dentally qualified designee, is at high risk of dental caries.
* Participant with specific dentition exclusions for 'Test Teeth'.
* Participant has taken antibiotics in the 2 weeks prior to Screening or Baseline.
