In skin treatment, the term 'detoxify' is associated with what?

The term 'detoxify' in skin treatment is closely associated with processes that help remove impurities, dead skin cells, and toxins from the skin. Exfoliation is a technique that achieves this by sloughing off the outer layer of dead skin, revealing fresher and healthier skin underneath. This process not only clears the skin but also promotes cell turnover, which can enhance the skin's overall appearance and health.

Rejuvenation primarily focuses on restoring the skin's youthful appearance, often through hydration and nourishment rather than detoxification directly. Immunization does not relate to skin treatment in this context, as it is a concept more aligned with health and disease prevention. Hydration is essential for skin health but does not involve the removal of toxins. Therefore, exfoliation is the most relevant answer when discussing detoxifying the skin.