Don't worry about this mark , still it you want it can be removed easily without any pain . U can fix up a appointment to remove this and meanwhile please use a sunscreen . It appears to be a sunspot or ageing spot which as such is harmless , cosmetically may be its bothering u. You can visit our website and read in detail about freckles and sunspots treatment If you want to have opinion on it you can visit our Center at janak puri, Delhi or you can approach the website www.drsuruchipurimakeovers.com