It didn't work, after leaving the tissue build up on my lips for 4 weeks and moisturzing it, it didn't heal it. It looked real bad with thick skin build up and the tissue smelled. I had to wash off my entire lips today. My lips are sore, red, and raw now so I put some neosporin Antibiotic cream. So my clonclusion to my expirement is it doesn't help to let the thick tissue build up on the lips because it didn't heal it.