I love the wetness indicator, and the fit is very good... but I have noticed that they have been really easy to pull apart by both my 3.5 yo and my 2 yo. Also, beware if your child has sensitive skin. My 3.5 yo ended up with a horrible rash after only using these for 2 days.
I tried this about 6 months ago, and now it is part of my routine. I have extremely long hair and still only needed a very small amount to fully cover my hair. It feels healthier, controls 90% of my frizz and smells awesome! It is a bit on the expensive side, but DOES last a long time because of the small amount you have to use at a time.
I used this gate for almost a year. I was really happy that the mechanism to open it was very good (my younger children never figured it out). I was disappointed that the piece that keeps the gate closed eventually snapped off and it showed that the piece was actually only glued in, not screwed.