So I am on vacation and didn't want to bring my new straight with me (kids, luggage, etc.)... regretting the decision now. Decided to bring my trusty Gillette Sensor Excel instead. It shaves just fine, but I've noticed that now my faces is erupting in ingrown hairs (common experience for me before a straight razor) but when I'm using my new straight razor, I've ad no such issues!

Why is that? Any ideas?