What is a common characteristic of on-scalp lighteners?

A common characteristic of on-scalp lighteners is that they often include conditioning agents. This is important because on-scalp lighteners are designed to be applied directly to the scalp during the hair coloring process. The inclusion of conditioning agents helps to mitigate potential damage to the hair and scalp that can occur during the lightening process. These agents work to nourish and protect the hair, enhancing its condition and resilience, which is especially crucial when the product is kept in contact with the scalp for an extended period.

Since on-scalp lighteners are typically used in a more delicate area, their formulation emphasizes the need for gentleness and care for the hair and scalp, which conditioning agents can provide. This characteristic sets them apart from other types of lighteners, which may focus solely on achieving the desired lift without addressing hair health.