With every psychedelic I've ever tried; I can trip two days in a row - same dose - and not notice a difference in intensity. Often I've found the next day's trip to be even crazier/better and with less anxiety.
Tolerance seems to hit me after about the third day, but I can still trip three days in a row and have great times. Never gone for 4 days in a row - I prefer to restrict my usage to 1-2x per week.
YMMV... some people find the next day's trip to be a lot weaker, others don't.
I have a very fast metabolism, plus I'm an athlete... I believe this explains a lot. LSD doesn't affect me nearly as long as it does most people - I've taken up to 500mcg before but 8-10 hours after putting it on my tongue I'm normally fast asleep (and I always sleep like a baby after an LSD trip).
If you're one of those people who trips hard for 12 hours on acid then you're probably not going to feel much if you take the same amount the next day.