Silicone is a common ingredient in scar creams, and it works by keeping the affected area hydrated. Keeping skin hydrated helps promote cell growth and turnover. Silicone has been proven to reduce the thickness of scars and helps diminish any pain or itchiness you may feel at the site of the scar.
If you have hypopigmentation: patches of skin that are lighter than your overall skin tone. Your skin's pigmentation, or color, is based on the production of a substance called melanin. Then a semi-permanent option would be scar camouflage with make-up or having semi-permanent make-up procedure where pigment is implanted to blend color into the scar that would match your unaffected skin tone around the scar. Keep in mind that if you sunbathe/tan, the treated area will not tan with the rest of your skin. It's important to wear sunscreen to help prevent further discoloration.