The black spots on your nose are most probably blackheads, and when you say that they are becoming 'brighter day by day', I assume that you mean they are becoming more prominent. Blackheads are not a major problem, in fact they are quite common, and can usually be gotten rid of quite easily.
As you know, skin is constantly dying and being produced by the body. Skin cells die and are discarded, and new skin cells are produced, which gradually reach the surface. Sometimes, for a variety of reasons, the skin cells that die are not properly discarded, and many of them remain on the skin's surface. As these dead skin cells accumulate on the skin's surface, some of them end up blocking skin pores. Normally, pores allow sebum from the glands beneath the skin to reach the skin's surface, and if a pore is blocked, sebum continues to be produced but has nowhere to go. The sebum accumulates in the pore, forming what is known as a whitehead, or, as in your case, a blackhead. The difference between the two is simply that in the latter case, oxidation and dirt have darkened the accumulated matter.
To prevent blackheads, you simply need to help your skin to discard the dead cells. Regular use of a facial scrub should be enough - you can use a commercially available product, or you can prepare your own facial scrub at home. If you are using a commercial product, avoid using one that contains micro beads, as these are usually made of plastic, and are harmful for the environment. For a home made facial scrub, you can simply mix a little rice flour, honey, and lemon juice, apply these to your skin, and gently scrub with your fingers.
The black spots on your nose might also be the pores themselves, which tend to get wider and more prominent as the years go by. Unfortunately, there is not much that can be done about stretched pores. Regular exfoliation, as described earlier, helps to some extent, and in addition, you should keep your skin moisturized if necessary. Drinking plenty of water will also keep your skin properly hydrated and will avoid dryness, thus making the pores less prominent.
The black spots could also have other causes, so if the measures described above do not get rid of them within a month, you should visit a skin specialist, or at least consult your doctor.
answered by G M