Ammonia molecules are notorious for causing scalp irritation, often leading to a burning or itching sensation. If you have a sensitive scalp or have previously suffered severe reactions to hair products that contain the ingredient, ammonia-free hair dye would be a better alternative.

A major drawback of ammonia-based hair color is that it interferes with the hair’s pH balance and also causes moisture and protein loss. The hair becomes brittle and prone to breakage in the long term, causing hair to thin out. Ammonia-free hair color is safe for long-term use, making it perfect for maintaining healthy hair.

Ammonia has tiny molecules that start to evaporate the moment you apply hair color. This explains the strong, pungent smell you experience when using it. These vapors can be extremely irritating to your senses, making it difficult to breathe. You don’t have to worry about this when using ammonia-free hair color.

While ammonia-free hair dye also raises the hair’s pH level to create an alkaline environment, this pH value is significantly lower compared to that of ammonia-based dyes. Its mechanism of action also softens the cuticle to allow the color pigment to penetrate the hair shaft without opening it up all the way. This keeps the hair from losing protein and other critical nutrients during the coloring process.