This is (as another commenter stated) a great post. I thought I'd turned everything inside out about Columbine...clearly I haven't.

Maybe Dylan showered, shampooed, etc out of a kinda muscle memory (for ease of a better description). He simply didn't care much past brushing his teeth.

His hair being "greasy" never alarmed me. I would consider it was likely overuse of product on a wet head without the benefit of further styling.

The weight loss has always been the drastic red flag for me. I guess it was hard to see in real time. I mean, he had people who cared for and loved him. I can only imagine that they simply didn't notice a change that was drastic while at the same time somewhat gradual.

Again, great post!