Not sure what type of hair you have or skin but here goes with a few of my faves on a budget
Hair - (mine is curly, coloured and dry). I use a semi permanet cheap colour for my roots called Polytint. Thats done every 6-7 weeks and adds a nice shine as well as covering my silver/greys! Shampoo & conditioner I always vary as my hair seems to respond well to changing it often but a few trusted ones are the Aussie brand (3in miracle conditioner v good), coconut inecto from Home Bargains, the new Garnier blends. I also use a leave in conditioner to style my unruly curls and tiny bit of hair oil for shine.
Skin I use Simple, Nivea and recently the Superdrug hot cloth cleanser and serum - all good. And Vaseline for dry skin and lips overnight.