Non-oxidative colors should be applied on which hair condition?

• A. Damp hair
• B. Wet hair
• C. Clean, towel-dried hair
• D. Dry hair

Answer: (C)

Non-oxidative colors work by depositing direct pigment on the hair shaft without a chemical reaction, so the pigment needs to adhere cleanly to the cuticle. Dirty or oily hair can hinder even uptake and leave uneven color. Water or excessive moisture dilutes the pigment and can cause it to run or wash out before it sets. A clean, towel-dried state provides a balance: enough moisture to help distribute the product, but not so much that the color gets diluted or washes away. Dry hair can be too absorbent and may take color unevenly, while fully wet hair liquidates the pigment. So, applying to clean, towel-dried hair gives the most even and predictable result.