There are various causes which may lead to skin hyperpigmentation, some of which you may not even be aware of. Here are the six main culprits that are causing those dark spots.

6 Causes of Hyperpigmentation

1. Exposure to sun's UV rays
2. Skin micro-inflammation, from stress of sun's rays
3. Over-zealous scrubbing of the skin, which can weaken skin's natural barrier
4. Ageing, causing cells to heal more slowly
5. Allergic reaction to skincare products
6. Hereditary factors