Very Dry Skin, White Flakes on head/eyes

I am having a very dry and rough skin now very frequently white flakes on head, eyebrows and even on eye lashes plus my face looks dull, dry and less energetic than before. I wonder how to resolve this problem I was using Salicia KT shampoo and Cetaphil Oil cleanser facewash with Patanjali AloeVera as moisturiser but i have seen no good results at all in the beginning it was ok but now no results. Please help with this i cant get rid of very dry rough skin and white flakes on head (sticky white flakes not big white flakes are on eyebrows, eyes and head). My Skin is itchy especially on head, eyes and eyebrows due to which it cause blurryness itchiness in eyes. Also, my body immunity is low due to my vision problem and dryness