Fluorouracil - What do I apply to my face after I stop applying the cream?

Have you been prescribed anything?
Some people are prescribed a specific moisturiser or mild topical steroid to help healing.If you have not been prescribed anything then yes Vaseline may be applied thinly to raw and crusted areas at bedtime. Stop the Vaseline when the crusts and scabs have healed.

When treatment is stopped the skin usually heals rapidly. After healing, the treated areas are often redder than normal and may feel more sensitive; this redness and sensitivity will gradually fade over a few weeks. Occasionally it persists for several months but normal make-up can be used to cover it if desired.