Kerato-reducing treatment cream for dandruff conditions.recommended for stubborn flaky scalp conditions and localized squamous conditions on the body (elbows, knees), kertyol pso cream eliminates scales, regulates desquamation and calms redness.directions for use: body: morning and evening, for 4 weeks. leave on for 20 minutes. rinse if needed. scalp: apply in the evening. leave on overnight. apply elution shampoo and rinse. use for 2 weeks.