Pravana ChromaSilk Creme Hair Color With Silk Keratin Protein 3oz (6.3/6G) Extra Dark Golden Blonde One of the most versatile hair color with superior dye load ensures complete grey coverage and rich vibrant colors. Chroma Silk's low-ammonia formula employs a proprietary blend of keratin protein to provide protection and added strength. Pure silk protein gives hair unparalleled shine. Hydrolyzed silk amino acids, because of their small molecular weight and affinity to adhere to the hair fiber, act as carrying agents to help drive color deep into the hair fiber, providing unmatched color vibrancy and durability. Exclusive To NEVO Hair Care Products: No Sulfates No Phthalates No Animal Testing No Sulfites No Gluten No Cocamide DEA No Parabens No Propylene Glycol No Cocamide MEA No Sodium Chloride No Animal Bi-Products 100% Biodegradable Packaging.