Hi. Greetings. The following would help you :
1. Daily use of sunscreen in day time of SPF 30 applied half hour before sun exposure
2. Daily bed time use of retinol based cream for dark circles. Assessment for cause of dark circles and possible treatments like Prp rejuvenation would help.
3. Peeling agents and skin lightening agents prescribed by dermatologist for reducing tan and improving your natural skin colour and reducing spots.
4. Evaluation by dermatologist for chemical Peel and micro derm abrasion - this will indeed help. Bio oil, fractional laser, retinoid cream would help in stretch marks.
5. Kindly read my blog on daily skin care on Practo health feed.
6. Daily fitness work out and loads of fruits and veggies will help loads in improving your skin.
Hope this helps.
Warm regards. Dr Govind S Mittal, excel care hospital, Bangalore.