Natural pigmentation of skin around the neck makes it darker. It is an area we just soap and never pay attention to, hence it is ignored. It is really embarrassing when you tie a ponytail. But do you care for it?
Here are some common remedies that I know.
1. A mild bleach to get it lighten and then you can retain the fairness by applying natural astringents like tomato juice in which you can add a pinch of turmeric as it is a natural bleaching agent.
2. Rub a half squeezed lemon before shower time on the complete area.
:if you know more, please post here.