I used the `It`s a 10` a few times this week as opposed to my usual one.. I ended up [lightly] shampooing the hair last night as it looked a bit `wiggy`/ `tired`---- I may have applied too much and got `build-up`. I applied my usual one after washing [`Enhance leave-in`] and it`s looking ok again -- `fresh`--so just be aware that it may be possible to have too much of a good thing ! Paul.