Should I trim my hair before I cut it with hair clippers? I am a male and my hair is approx. 4.5 inches in length. I want to cut it down to 1.5 inches using a no. 12 guide comb. I ask this because the last time I done this my hair came out to be less than 1 inch and it look horrible. I was wondering if it was because it was so long to begin with. Please help… Thank You