Sorry if these are stupid questions but I've never dyed my hair before 
I fancy a change in my hair. It used to be bra strap length, thick and naturally mid/dark brown, but I had it cut back in August to just about chin length. It's now grown to about collarbone length but its just taking ages to grow back, I feel like it just looks a bit boring?
Anyway, I would love to have very dark auburn hair or more red tinges in my hair but I'm worried about the upkeep of semi permanent dye. Does it wash out after a while or would I need to wait for it to grow out? And how easy would it be to dye darkish brown hair auburn?
If it would be difficult to maintain does anyone have any suggestions for a more interesting hairstyle I could go for? Sorry for the long post!