Queens  - NY, USA I've been using exclusively Caesar's Killer Silver gray-wash ink over like 5 years. It made a huge impact in my artwork. I love it because it is EU certified. (my clients matter to me) consistent, every time I order I have the same shade in the bottle dont need adjustment and re-learn, thus gives me self confident and speeds my work up. On the top of it gives smooth silvery wash looking once the tattoo healed. No bluish tint like other inks. IG - @philipus_tattoo