ORIGINAL FORMULA Pravana Chroma Silk Permanent Creme Hair Color 3 oz ChromaSilk is a high-performance Creme hair coloring system that meets the needs of the discriminating professional. ChromaSilk covers completely gray while giving hair unbelievable shine, silkiness, and long lasting color. Pravana's exclusive silk and human hair keratin protein and natural UV filters ensure that hair is actually in better condition after the hair color service. Because of ChromaSilks low ammonia formula it acts as both a permanent and demi-permanent hair color.