Vibrant, long lasting, fade resistant results Excellent gray coverage Great conditioning +A gentle floral fragrance Directions for use: Mix 1 part Wella Color Charm luiquid color with 2 parts Wella Color Charm Developer. Apply to the hair using either an applicator bottle and brush Developer for 30 minutes and up to 45 minutes if additional depth or gray coverage is needed. Directions: Mix 1 part Wella Color Charm luiquid color with 2 parts Color Developer. Apply to the hair using either an applicator bottle and brush Developer for 30 minutes and up to 45 minutes if additional depth or gray coverage is needed.