Tints used on lashes or brows with aniline derivatives can potentially cause?

The use of tints containing aniline derivatives on lashes or brows can potentially lead to serious reactions, including blindness. Aniline derivatives are chemicals that can cause intense allergic reactions in some individuals, and if these substances come into contact with the eyes, they pose a significant risk of harming the sensitive tissues. The eyes are particularly vulnerable, and any exposure to harmful chemicals could result in serious conditions, including chemical burns or other damaging effects that could impair vision or, in extreme cases, lead to blindness.

It's essential to follow safety protocols when applying these products to minimize risks. This includes performing patch tests prior to application and ensuring that the product is used in accordance with the manufacturer's instructions to protect the eyes and skin. In contrast, the other options—such as darkening or lightening of lashes and brows or even curling—are effects that can occur with the application of tints, but they do not carry the same degree of risk to health and safety as the potential for blindness.