Ammonia-Free Hair Dye Goldwell Topchic Zero Ammonia-Free

Take equal amounts of Goldwell System Developer Lotion and Topchic Zero Ammonia-Free (e.g., 40 ml of Goldwell System Developer Lotion + 40 ml of Topchic Zero) and mix them together in a color mixing bowl. Stir thoroughly until you achieve a smooth, creamy consistency. Apply the mixture to dry hair and leave it on for 30 minutes without additional heat, or for 20 minutes if using an open heat source. Rinse your hair thoroughly, then wash with shampoo.