Hello, Welcome to healthcare magic. Your skin tone is determined at the time of your birth itself and it is decided by the concentration of melanocytes and circulation. Therefore any treatment or procedures can never make you fairer than what you were at the time of birth. But most of the people will acquire more pigmentation as age increases, we call it facultative pigmentation. Lot of factors determine it, most important being sunlight, others include dust, pollution, smoking, less hydration, intrinsic ageing and free radical damage, stress etc. Treatments should be to bring your pigmented skin back to your normal skin tone and make the skin tone even all over the face. Lasers like Nd-yag laser target the melanin ( color pigment ) in the skin and remove them. It is useful in conditions where excess melanin has got deposited in the skin like in conditions like melasma, nevus of ota( a type of mole), etc. In my opinion, it is not recommended for making skin fair . However, it depends on the doctor s experience and expertise. If I were to be your treating dermatologist, I would recommend you to use a face wash twice a day ideally a one containing glycolic acid as it helps in exfoliation and to even out the skin tone. The most important product will be a sunscreen. Half an hour before going out apply a sunscreen and reapply it every three to four hours. You can use a cream containing Kojic acid, liquorice, arbutin and tetrahydrocoumarin ate bedtime as a lightening agent. You can get chemical peels done to remove the acquired tan. Eat healthy food rich in fruits and vegetables. Hope this clears your doubts. Take care.