My face feels hot even when I have not applied anything.

It helps to notice whether it happens with temperature changes, exercise, or at rest, and how long it lasts. I would note the triggers, duration, and whether redness accompanies the heat before interpreting it as a simple barrier issue.

Heat is a symptom, not a diagnosis

I would not assume heat alone identifies a barrier problem. If it keeps happening without a clear explanation, get it assessed before trying stronger products or treatments.