Participants will receive tirbanibulin ointment 2.5 mg in 250 mg (single dose packet). The participants will be observed for 24 weeks to gather participant reported outcomes (PROs) and clinical profile.

Participants will be treated with tirbanibulin ointment 1% (2.5 mg tirbanibulin in 250 mg) as 1 single-dose packet per application, for 5 consecutive days.

Skindex-16 is a validated dermatological instrument to measure dermatology-specific Health-Related Quality of Life (HRQoL). The Skindex-16 consisted of 16 items that were divided into three domains: Symptoms (four items, range 0-24), Emotions (seven items, range 0-42), and Functioning (five items, range 0-30). Participant were asked to respond on how much their skin condition bothered them in the week prior to administration of the Skindex-16. Each item was scored on a scale ranged from 0 (never bothered) to 6 (always bothered), where higher score indicated continued/more botheration. Item scores are transformed to 0 to 100 scale, and domain scores are calculated as the average of the item scores comprising the domain. Net positive changes in respective subscale scoring indicates improvement in that particular Quality of life assessment (i.e., Symptoms, Emotions, Functioning), while net negative changes in scoring indicates decrease in that particular Quality of life assessment.

IGA success was defined as achieving a rating of 'completely cleared' (0) or 'partially cleared' (1) in IGA of AK status at Week 8. The IGA is 5-point scale that assessed the severity of actinic keratosis, with scores ranged from 0 (completely clear) to 4 (not cleared): 0 = completely cleared (100% clearance); 1 = partially cleared (>=75% clearance); 2 = moderately cleared (50% to 74% clearance); 3 = minimally cleared (<50% clearance); 4 = not cleared (0% clearance), where higher score indicated higher severity.

Participants with AK applied tirbanibulin ointment 1% topically once daily using 1 single-dose packet (2.5 mg in 250 mg) per application, for 5 consecutive days were observed for 24 weeks to gather PROs and clinical profile.

Skindex-16 is a validated dermatological instrument to measure dermatology-specific Health-Related Quality of Life (HRQoL). The Skindex-16 consisted of 16 items that were divided into three domains: Symptoms (four items, range 0-24), Emotions (seven items, range 0-42), and Functioning (five items, range 0-30). Participant were asked to respond on how much their skin condition bothered them in the week prior to administration of the Skindex-16. Each item was scored on a scale ranged from 0 (never bothered) to 6 (always bothered), where higher score indicated continued/more botheration. Item scores are transformed to 0 to 100 scale, and domain scores are calculated as the average of the item scores comprising the domain. Net positive changes in respective subscale scoring indicates improvement in that particular Quality of life assessment (i.e., Symptoms, Emotions, Functioning), while net negative changes in scoring indicates decrease in that particular Quality of life assessment.

FAS included all participants who received at least one dose of tirbanibulin during the study observation period of 8-weeks related to primary endpoint, as part of usual care and had at least some data pertaining to the key variables studied at relevant timepoints, post-baseline. Here, "number analyzed" signifies participants who were evaluable at each specified category.

Participants with AK applied tirbanibulin ointment 1% topically once daily using 1 single-dose packet (2.5 mg in 250 mg) per application, for 5 consecutive days were observed for 24 weeks to gather PROs and clinical profile.