<s>[INST]My skin colour is getting darker day by day i dont know why. My age is 30 years male presently working in EXL Services. Shift Timings are 14:00 to 23:00 hrs. I used to sleep nearly at 01:00 am and used to get up at 08:30 hrs. I am about to merry please help me it is a big reason for me to worry that now why it is happening..[/INST]Hi, Thanks for writing to us. Most probably you have developed sun tanning over face. Sun damage is maximum during 11 am to 3 pm sun exposure. To treat the Siamese a sunscreen with SPF 30 half an hour prior to going out in sun. Take vitamin C supplement like Colin 500 mg twice in a apply a HY Chat Doctor. Taking few sessions of chemical peels would help you immensely. For the same consult a dermatologist nearby. Hope that helped. Take care</s>