Where should powder lighteners never be used?

Powder lighteners should never be used on the scalp due to the potential for severe irritation and damage. The scalp is a sensitive area that can react negatively to the harsh chemicals found in powder lighteners, which can lead to burns or chemical injury. Safe application methods and products are crucial when coloring or lightening hair, especially near the scalp where the skin is more fragile. Instead, professional techniques typically recommend applying lighteners away from the scalp to ensure client safety and comfort while achieving desired results.

While caution is advised for use on other areas like colored hair or dry hair, these conditions do not pose the same level of risk as applying directly to the scalp. Understanding the appropriate use of various hair products is essential for maintaining the health of both the hair and the client's skin.