RecruitingPhase 1Drug trialA Study to Evaluate Dermal Open-Flow Microperfusion and Plasma Pharmacokinetic Study of Multiple Doses of Oral Povorcitinib or Topical Ruxolitinib Cream in Healthy Adult ParticipantsThe purpose of this study is to evaluate the interstitial concentrations using the open-flow microperfusion device and plasma pharmacokinetics following multiple doses of povorcitinib or topical ruxolitinib cream in healthy adult participants.