Greetings Mike961, a pleasure to greet you and congratulate you for the content of your article, no doubt you cleared many doubts on the subject, I found interesting the phenology of hair the stage of anagea, catágena and telógena and made me remember the phenology of herbs ( Vegetative, elongation and reproductive) as I am a specialist in pastures and fodder. Again let me reiterate my congratulations on the content was didactic and you broke down that myth of hair thickening after cutting. We are still in communication!