PRAVANA Creme Developer 30 Volume, 33.8 oz. should be your go-to for superior hair color products. This developer works with the ChromaSilk Hair Color product to lighten your hair gently and safely. Use this product for lightening your hair up to 2 levels. With an approximate processing time of 40 minutes, you?ll love the brighter effects this offers your hair. Suitable for salon professionals and home users alike.