Treating hypopigmentation is tricky. If you get light spots that don't go away, be sure to see a dermatologist. The best treatment option will depend on what's causing your hypopigmentation, the amount of light skin you have, and the result you want to achieve.
**There are many treatments for hyperpigmentation. There aren't nearly so many for hypopigmentation.
1. If you have post inflammatory hypopigmentation from a skin injury or skin rejuvenation procedure, you may want to wait before seeking treatment. When the cause of the post postinflammatory hypopigmentation is removed, most people get spontaneous improvement within a period of weeks or months. But if the melanocytes (that give skin color) are destroyed, the color loss will be permanent.
2. Prescription medications can help to repigment light spots.
3. Low-level laser (light) therapy (LLLT) is used to treat many skin conditions. Read more here: https://masterpieceskinrestoration.com/blog/light-spots-and-hypopigmentation/