Hey there, bro! 👋 Pistils always turn brown as they mature, bro! These pistils are commonly referred to as cannabis stigmas, which are a special reproductive module of the girl that catches pollen and hides it in her cup from which she grows! 👌 Brown stigmas are normal, bro! They're not burning, they're maturing! Everything is going as it should! Keep growing and sharing your successes with the community, it's important to us! 👌😇👍 Good luck, my friend! 👋