Is it true all scalp micro pigmentation turns blue with time? What is the best ingredient or pigmentation company to choose?

I want to get SMP and I did some research and found out the most common problem with SMP that, it turns blue with time. And I visited some clinics that perform SMP some of them told me "Of course SMP with time it turns to blue and if anybody told you no they just lying to you" and all though some clinics told me no it will not turn blue. I am very worried that the ink will turn blue! So what is the truth? And what kind of ink and ingredients to look for in the clinics to prevent the color change