I have wavy hair which is naturally white, and since it lost its brown colour it's got very dry and I have struggled to keep it moisturised enough not to go fluffy and frizzy. However, this Moogoo protein shot is a game changer. It's not sticky or stiff. You really can leave it in and not have to wash it out. I rub it into the ends of my wet hair after washing or showering, and it just gives enough definition and shine and softness to keep my hair looking fresh, silky and under control without weighing it down. It helps to define my waves as well. I use it on non-hair wash days to bring my hair back to life when I've just wet it in the shower and it just helps it keep its shape and softness. This is the second tube I have bought as I like it so much. Would definitely recommend!