Not knowing the language hairstylists speak can result in stressful trips to the salon, not to mention terrible haircuts. To help you communicate with your stylist and get the best cut ever, we've deciphered the most common salon jargon. 1. Layers Every cut falls under three categories: layered, one-length, or a combination of both, says celebrity hairstylist Dwayne Ross. Layers help lessen density and create movement. One-length cuts, on the other hand, add weight. To avoid confusion and hair mishaps, double-check with your stylist. Regardless of what terminology the stylist is using, Ross recommends always asking, "Will this technique create layers or remove them?" 2. Overdirecting This is a cutting technique where hair is lifted and cut over the head to create extra body and volume, says Nick Penna Jr., owner and lead stylist of SalonCapri. Essentially, the end result is a ton of exaggerated layers. Think: shaggy, rockstar cuts, says Ross. 3. Thinning Th...