Pravana 30 Volume Creme Developer is a product used in conjunction with hair coloring or lightening treatments. The "30 Volume" indicates the strength of the developer, which is typically used to lighten the hair by up to three levels. This particular product comes in a large 33.8 fl.oz container, indicating it's suitable for frequent or professional use.

The creme developer is used to activate hair color or bleach, helping to open the hair cuticle and allow the color or lightening agent to penetrate the hair shaft effectively. It's crucial to follow the instructions provided with the specific hair coloring or lightening product you're using to achieve the desired results while minimizing damage to the hair.