My hair is around 3 inches long, not too thick. Typical white northern European person hair. I want it to have more volume because it tends to fall down, even with pomades, cremes, etc. I'm not interested in a gel or anything that will make it hard. Basically I just need volume. The trick is I live in hot sunny California and hair products tend to... well... sort of melt and not work well. Do I need a mousse or something? Thoughts?