Cyna … what in the world is this ?? TEST STRANDS SWEETIE ! This is why we do them before a corrective color service. Under this black box dye, we also had very green tones from previous color underneath . Test strands are going to visually show you what you’re really working with and if the integrity of the hair will be compromised before starting the whole head. This also helps to achieve predictable results and saves you and your client some stress. She wanted to go red and we made that happen very carefully and with extra help of some neutralizing to get rid of the unwanted green. ✅