Hello,
Welcome to ehealthforum and thanks for writing us
It seems that you are suffering from pigmentation which can be due to skin afflictions,drug effect,hormonal imbalance,sun exposure.
It is difficult to comment on the pigmentation without a proper examination of the affected area and its extent.It would be better to take a Dermatologists opinion regrading this.
Usually peeling and laser treatment gives good result on them.Some measures for you:
1)Take some time & use a good moisturizer. Make sure you apply a sunscreen with SPF 45 - 70 to have adequate protection for UV Rays
2)Avoid using OTC products.
3)Apply aloe vera gel on the scars two times a day for 10 to 15 minutes.
4)Mix oatmeal,honey and egg and make a mask and apply on face once a week.
It works on the pigmentation areas.
Hope it helps!