Yes, every tattoo will develop scabs, but with proper care, these will resemble more like flakes than scabs. However, this also largely depends on your own skin type. Color tattoos and tribals may often take a bit longer to heal compared to black and grey tattoos.
During the first 2-3 days, it's normal for some ink to come out of the tattoo, but if this continues, you're probably applying too much ointment. It's better to apply a thin layer more frequently than applying it too thickly twice.
Yes, even the best cared-for tattoo can sometimes heal poorly. This is where touch-ups come in. Wait 5-6 weeks until the tattoo is completely healed before coming back. Retattooing too soon can damage the skin and cause scarring.
No, UV rays can still penetrate and damage the new layer of skin that is forming.
Yes, during healing, a new layer of skin forms over the tattoo. So when you look at your tattoo, you're actually looking through a layer of skin. If you have dark skin, colors will appear much less vibrant than if you have very light skin.