Hair Oil - haarserum

I always use this hair oil right after washing my hair. When I blow dry, I do it afterwards. For long hair, I use 1 pump, rub my hands briefly to spread it and then spread it over the bottom half of my hair first. I spread the remaining amount in my hands on the top half. This is because the oil protects your hair from heat. It also protects against color fading. Immediately when you are dry, you notice that your hair feels very soft and shiny. Not weighted or greasy at all. The oil has completely retracted. It also smells very luxurious. Highly recommended! #LoveIsInTheHair

Is the Ouai hair serum as good as gisou's hairpiece and does Ouai's hair piece smell good too?