What it is: Salerm Aloe Cream Developer 20 Volume can be used both for coloring and lightening and comes in four strengths to cover all the professional's technical needs. What it does: hair is protected throughout the entire application process, avoiding dry or dullness and giving hair a more lively appearance. What else you need to know: It provides extraordinary shine, the result of the hair fiber's good condition after the hair color application process is completed.