Very good product for strengthening and correcting hair, it requires at least 3 months of application to see results and consistent use with every wash. The use of shampoo/conditioner is not mandatory but it cannot work properly without the serum!

I have wavy hair with medium length, dyed, but without any special treatments.
Disadvantages: First of all, the scent is non-existent, which for me is important for a leave-in product to leave a nice smell in the hair. Then, at least for my hair, it did not provide any particular reconstruction, nor any special texture. I would say it probably made my hair dull.
Advantages: It made my hair very manageable, allowing me to straighten it easily and quickly.
However, I will not choose it again, because I have purchased another product in the past at 1/3 of the price with a much better result.

In thin, damaged, brittle hair that frizzes immediately, it facilitates styling and moisturizes satisfactorily. Personally, I'm not thrilled with its scent (it smells like a chemical salon product) and I use it together with another leave-in conditioner for additional hydration. It doesn't weigh down the hair at all (if you apply it to wet, shampooed hair) and I even use a considerable amount (about 6 sprays of this and 8 of the other). After 2 months, my hair has finally grown longer and looks much more moisturized and healthy.

Light texture and neutral scent moisturize and smooth the hair. The hair is shiny without frizz. Depending on the quality of the hair, you adjust the amount of cream.

From the first application, I saw an improvement in the quality of my hair, they became smoother and softer, without frizz. Of course, my hair is not heavily damaged, but it is constantly frizzy and dehydrated, and in this I saw a big difference. Combined with step 4, it does a good job and has a subtle aroma.

Very nice feeling on the hair. I feel them softer and I think it helps with frizz. The scent is relatively neutral.