lash & brow
“can it last longer?”
no, all of our body hair is on a 6-8 week rotation, it all falls out & is replaced always - so gradually the ‘treated’ hairs fall out & new ones replace them, naturally, always.
“how about damage?”
this ^ is also why, no, it doesn’t do harm ongoing. the process just affects the hairs themselves, so once the treated ones move out, the new are new.
"Can I wear mascara &/or makeup still?"
Of course! I don't recommend it within the first 24-48 hours, but if you want to amplify the look you can wear your usual makeup as you wish.
BUT tint is lifted quicker by oils,
so limit oils directly on the treated areas for longevity & keep em combed (using your spoolie) & tidy for best looks.