Students are responsible for telling the teacher that they have prepaid to come back to under glaze, and ensuring they are given M390 red clay. Please confirm with the teacher that you’re getting M390 clay and not recycled clay. As we need the pots to be RED and stand out!!! so technicians do not glaze them accidentally. Please also message through contact form once buying the coming back to glaze session so that we can inform your instructor ahead of time to prepare this clay as well. But regardless of messaging us, you still need to ensure the teacher has given you M390 red clay, otherwise we will not be able to have you come back to underglaze if this clay specifically is not used.