While I was working in an ac office, my skin brightened and used to glow. Now that i'm not working in that condition anymore and I daily go for morning walk, my skin is becoming darker and tanned day by day. I'm using lotus spf40 before I go out, but still the tan is there. My marriage is forthcoming, I want my tan to be gone completely and want my previous look back. What do I have to do to get my original look back in just 4-5 months?