A powder lightener without buffering agents and conditioners should NOT be used for which service?

A powder lightener without buffering agents and conditioners is specifically designed to lift color from the hair, and it can be quite powerful and damaging if not used correctly. The double-process blonde service typically involves first lightening the hair to a certain level and then applying a toner to achieve the desired blonde shade. This process usually necessitates multiple applications of the lightener, which can lead to significant damage if the lightener does not have protective agents.

Using a harsh powder lightener for double-process blonde services could result in excessive damage to the hair structure, leading to issues like breakage or dryness. This is why it is crucial to use a lightener with buffering agents and conditioners for this type of service to maintain hair health during the lifting process. Color retouch, highlights, and permanent hair color services generally do not involve as much lifting and might not require the same level of care in terms of using milder agents to prevent damage, making them more suitable options for a heavier powder lightener without additives.