I have tanned or dark skin. how do i regain my normal skin color? im also using sun cream spf 30+

Avoid sun exposure: Continued protection from the sun, using sun protective clothing (especially a broad-brimmed hat), seeking shade, avoiding the mid day sun, and daily use of a broad spectrum sunblock will help fade tanned skin. Take supplemental vitamin d (1, 000-2, 000 iu daily) to avoid deficiency. If you have developed unusual dark patches on your skin, you should see a dermatologist to determine the cause.