True or False: It is advisable to avoid adding essential oils to an oil treatment to prevent excessive oiliness.

The assertion is that it is advisable to avoid adding essential oils to an oil treatment to prevent excessive oiliness. This claim is false; adding essential oils can actually enhance an oil treatment's benefits. Essential oils are known for their therapeutic properties and can provide various advantages, such as improving scalp health, adding a pleasant fragrance, and promoting hair strength and shine.

In many cases, the essential oils, when used in appropriate amounts, do not contribute to excessive oiliness but instead offer additional nourishment and can help balance oily hair types. It's essential, however, to consider the individual's hair and scalp needs, as some might have sensitivities or might not require the added moisture of oils, but this does not mean that adding essential oils is universally inadvisable. Therefore, incorporating essential oils can be beneficial rather than detrimental when used correctly.