Products with a thin/light consistency.

Ingredients would be tricky, anything with small-enough molecules will penetrate eventually it's just different for everybody. It's good to think of porosity as a scale that ranges from high to medium to low with points inbeween...for example, one person can have lower porosity than another low-po. It's not a set high, med, low where all "lows" and "highs" are the same. It takes different times for everyone, the only consensus (that I can think of) is to avoid heavy leave-ins and stylers to allow for easier penetration and faster drying time.