-It's a bubble dye.
-Easy to dye by yourself.
-Hello Bubble is not a hair dye exclusively for gray hair.
-Recommended for light hair : 10AB (Ash Beige), 6AO (Ash Olive), 7A (Ash Taupe Gray)
-Recommended for medium to light hair : 7V (Peri Violet), 7AR (Ash Rose), 6A (Dusty Ash), 4B (Whale Deep Blue)
-Recommended for natural to medium light hair : 6N (Chovo Brown), 7K (Ash Khaki Brown), 8MB (Matt Brown)
-Recommended for tone-down hair : 5A (Dark Ash), 3NT (Dark Choco)