Sirpreis- On a daily basis yes I would trim. I would never ever get them wet. I learned how to eat, drink, and brush my teeth without ever touching or wetting my lips. I also would NOT put moisture on them up UNTIL those huge crust stopped forming. Once I noticed the normal lip surface returning I would apply aquaphor lip repair for protection from wind etc. After about three months I would only apply aquaphor at night. But note* I do NOT NEED to wear any kind of moisture or product throughout the day. My lips stay just fine and normal. Occasionally they do feel a little dry but they do not crust or crack or become inflamed. Its just like normal dryness, especially since I live in a cooler region like Seattle now.