I know this sounds like a strange question, but I have often seen the term "..one length overall.." in describing hair length. Does this mean that every hair is the same length or, that once picking a final length, all hairs are grown to that point? In this case the lower hairs are the shortest and the upper layers would be the longest.
Since the latter explanation is the style I am going for, I want to be better informed when the day comes that I need need to go in for a trim. (Don't worry, that day will not come until sometime in the next year!)
my interpretation of 'one hair length' is allowing it to grow from a uniform length (ex: all hairs ½ inch) without trimming. the hair would fall in natural layers.
i would call the style you are going for a 'blunt cut'.
I've researched this one thoroughly. The expression is deceptive. "One length" to hairdressers refers to all the hair being cut horizonally across the bottom in a "blunt cut".
I've found it interesting how hair behaves when cut this way. My own hair is slightly wavy when short, becomes quite curly-looking when layered, and is very straight when one-length. I suppose having the longest hair on top flattens the underlying hair down.
Thanks for the research and explanation. I have had the same problems as you with the short and layered styles. I hope the "blunt cut" will help the bottom portion appear straighter, however, I still a 3-4 months of growth before ready to try.