I have hyperpigmented (or not) patches on the skin, mainly on the chest, raised, dry with presence of intermittent itching.

It seems like you may be experiencing hyperpigmented patches on your skin, primarily on your chest, that are raised, dry, and occasionally itchy. Without actually seeing the lesions in person, it is difficult to provide a definite diagnosis. I recommend visiting a pharmacy to show them the areas of concern. The pharmacist may be able to suggest a suitable product based on their observations, or recommend a medical consultation if necessary. Sorry for the limited assistance at this time.