I was all set to micro blade when I talked to my brow waxer. She said I should think more on it because it is something you can only do a few times & then the skin will no longer take the pigment & scar tissue would prevent future hair growth. Any truth to this? Would the skill of the technician make a difference? The one I spoke to said she only ever goes to first level of skin - but also said hers last 4-12 months when everywhere else i've read it lasts 1-3 years. Thoughts?