Permanent hair dye Joico Vero K-Pak Color Intensifier Silver Intensifiers and correctors are concentrated color pigments that help intensify or correct the coloring effect. Repair and protect hair while coloring with Vero K-PAK Color Intensifier Series, it contains the award-winning K-Pak Reconstructor technology. The exclusive Quadramine® Complex - contains the key K-PAK Reconstructor technology - which helps in reconstruction, for healthy-looking hair after each coloring service. Result: Transforms the color by intensifying the final effect or countering unwanted tones and offers healthy looking hair. Can be mixed with Vero K-PAK Color to customize the color formula. Formula with Quadramine Complex and Lecithin to help rebuild and treat hair while tinting and intensifying. Technology: Quadramine® Complex - patented mix of proteins present in all JOICO coloring products Trans-Cuticle Delivery System (TCD) - Contains lecithin that softens the cuticle and reduces surface tension, thus naturally opening the pores during action. Calibrated Ammonia System – allows each color level to take only the minimum percentage of ammonia required, minimizing cuticle sensitization, scalp irritation and intense smell, giving vibrant results. Note: The amount of intensifier must not exceed 25% of the total color formula. It is not necessary to add an additional amount of oxidizer to the color formula if you use the intensifier only on isolated tables.