I've only been using the regimen for a week now but I've noticed that my skin pigmentation has gotten much darker where my neck is a much lighter skin tone than my face. I think it might be the moisturizer due to its tint but I'm not sure. Is anyone else having this problem? Even the skin around my mouth where i don't usually point the moisturizer to make sure it doesn't get on my lips or in my mouth is visibly a lighter colour than the rest of my face. I don't know if this is supposed to happen or maybe my skin is just irritated. What should I do?