The required product strength (or stiffness) is based on whisker length and the desired style.
It can also have restorative properties, which become more important as the hair length increases.
The wax is usually scented and sometimes pigmented with dyes; high end products utilize various combinations of iron oxide to create darker shades.
More sophisticated recipes may include gum arabic and a soap, scent and colouring may also be added if desired, to either strengthen the hold or for comfort.
The reason for this is that warm soapy water (used by the novice) removes wax build-up but damages the bristles by stripping them of natural oils, so an oil‑based moustache wax remover, that may double as a leave‑in conditioner, is preferred by some.