A- The "permanence" of the brows depends from person to person because there are so many variables at play that affect the longevity of your permanent makeup. It will fade over time. It's called "Permanent Makeup" because the particles from the pigment stay in your skin forever, although the saturation dissipates eventually causing fading/visibly perceived complete dissipation. Factors such as natural elements, skin type (i.e. Oilier skin can fade faster), age, skincare regimen (i.e. anti-aging creams), facials, peels, sun exposure, tanning beds, sweating, exercise habits, are all at play when it comes to affecting the life span of your brows. On average, they may last anywhere from 1-3 years. However, they start to fade the moment you get them because as the skin cells shed and regenerate, the pigment will surface and eventually fade out. It is recommended to get color boosts to freshen up the PMU to maintain its natural look every 6 months to a year.
Many clients ask "how will I know when I should get them done again?"... the answer is usually "you'll know...!" because you will grow increasingly frustrated at the lack thereof or you'll find that you're back to filling them in again more than you'd like. Usually after the first round, you'll get an idea of your body's cycle and how often you prefer to come in.
You can anticipate acclimating to your new brows, however, so your "preference" will evolve into an increasingly fuller/more filled-in look over time. For example, you may think your brows are more faded than they are because you've gotten used to having them filled in as opposed to when you initially came in with virgin brows. We can always go darker, just let us know because we always err on the conservative side!