Transform your look with Manic Panics iconic Amplified Formula Semi-Permanent Hair Color in Blue Steel. Introduced in 1977 as part of the revolutionary punk rock beauty movement this vibrant blue-grey shade delivers bold color that lasts 4-6 weeks. The amplified formula provides 30 percent longer lasting color compared to classic semi-permanent dyes while conditioning your hair with natural ingredients. Perfect for creating edgy steel blue tones or adding metallic highlights to your hair.