White petroleum jelly is very good, and costs less than £2. It is used to treat burns as paraffin gel.
If you look at the ingredients of quite a lot of those fancy creams you pay through the nose for you can mix them yourself without the chemical additions. Of course you won't have factory machinery to whisk it up lighter, so that it looks all white and good, but you will save money.
Vaseline has a lot of uses. When the air is dry, put a dab of it inside your kids' nostrils on a cotton bud and it will soften crusts and stop the kids picking their noses. If you need to use a Vick inhaler on the child's chest, put on Vaseline first, as sometimes the Vick is strong.
Keep some with you. When you bark your shin or elbow, put some fat/petroleum jelly on it immediately. It will soften the skin, so when a lump starts, the skin will stretch instead of split. Ulcers on shins take months to heal.