Single Retouch is when a single color is applied to your root area where the natural hair growth starts to disguise outgrowth.
All Over Color is when a single color is applied from your roots to ends.
Balayage is a technique where hair color is painted onto the hair to create a graduated, more natural-looking highlight effect. Similar to what nature gives us as children. This gives the off the scalp, lived-in look.
Full Foil is the highlighting service of your entire hair. All of your hair will be parted into sections in order to place foils all around, including the underneath your hair.
Partial Foil only focuses on certain sections of your hair. Commonly foils are placed at the top half and side sections of your hair to give off a brighter, face framing look. The underneath of the hair is excluded.