I ran into something while putting a coat of carnuba wax on an estate pipe bowl. While putting the first coat down, I noticed some areas on the briar that are a lighter color than the rest of it. I thought it might just be the wax clouding up in areas. I know clouding can be a part of the waxing process so I continued around the bowl until I felt I had a sufficient amount of wax on it. After the initial coat I began with my finishing wheel to really spread the carnuba around and eventually got it to a nice shine that I was happy with. Problem is, these cloudy and lighter areas were still there. Only now, they are shiny too. This pissed me off. After my frustration subsided (anger and frustration seem to be a big part of my learning process) I asked myself, "Why would these lighter cloudy areas remain on my pipe after all my hard work?" That's when a voice rose up from nowhere ( it was my own voice) and said, "It's the heat." A theory was born and I will share it with you now. My theory is this; after a pipe is smoked for a while, the heat from the burning tobacco can cause the finish on it to be soaked t into the briar. Especially in areas where the heat is concentrated. This can leave areas of discoloration that can not just be buffed out. I remember some of you folks discussing leather dyes that you use on briar. Now, I realize that sometimes we want to change the stain on a pipe because we want it to be a different color. I'm thinking you folks might use it because you run into this issue of dicoloration often. My question is; 1) Is my theory correct? And 2) As pipe restorers, do we run into this issue enough to warrant my going out and purchasing a bunch of this leather dye that is discussed? I have 70 or so pipes left to restore so if I need to spend a little scratch on my hobby, I don't mind. Please enlighten the new guy. Thanks for reading.