This product's entire value is what it doesn't contain.
When someone's skin barrier is wrecked and everything stings, the answer isn't a better active — it's the removal of everything that could possibly be causing a reaction. Vanicream was built for exactly that: no fragrance, no dyes, no lanolin, no parabens, no formaldehyde releasers. It's deliberately, usefully boring.
And it still moisturizes properly. Petrolatum is the most effective occlusive there is — it cuts water loss by over 90%, and nothing else comes close. Glycerin pulls water in. Together, that's the two-thirds of moisturizing that actually matters.
It's also the moisturizer to reach for during a barrier reset, alongside a gentle cleanser and sunscreen — and while your skin recovers from an over-enthusiastic routine.
Cheap, widely available, and it does exactly what it says.