Hi Carlos - what you need to do is to make your enclosure more humid. There may be some modifications required to the enclosure for you to do this. If you post a picture of your set up then we can offer some suggestions. Also, it would be good if you were to read this post: http://www.tortoiseforum.org/threads/how-to-raise-a-healthy-sulcata-or-leopard-version-2-0.79895/what can i do?