With having long hair and needing that extra boost to control it is worked well and added body also.I would say it is a great product. Tresemme K S K I S.

I love that product! it's very good for the hair, you put it in your hair to style them. when they're humide, you apply that serum, dry your hair and you place them how you want:)

Woww un peu plus cher , mais au combien efficace! J'adore et il sent si bon. Mes cheveux sont lisse et extrêmement brillant . Je l utilise seulement deux fois semaine

I just got this Keratin smoothing serum a few weeks ago. I rated it as a good price because it was on sale but I do think I probably would not have purchased it at full price without trying it first. I have super thick coarse and very damaged hair and I already own a lot of serums. I know keratin is good for the hair so that's what made me pick this particular product.

Surprisingly, after the very first application I noticed a real difference in the texture of my hair. It certainly was a lot smoother. I don't really read the back of the bottles regarding how much product to apply - my hair is long and very thick so I always need more product than the average person. It was no different with this serum - I applied a lot, probably 20 pumps in total. I start with about five pumps at a time and then add more as needed, but not everyone will need to use this much. So if you have fine / thin hair I would recommend starting with the recommended amount because I found this serum to be heavier than most - which is excellent for my hair type but not for those with short, thin or fine hair.
I use this in several ways: I apply a LOT in shower left on for about 20 mins while I tend to other tasks for more of a deep, penetrating treatment, after the shower in wet hair after squeezing out excess water and also on dry hair to calm extra flyaways. So for me this has multiple uses and is well worth repurchasing. Of course I would prefer sale price (who doesn't? ) but now that I've seen how well it works for my hair type I wouldn't mind paying full price because it gives me good results.
The scent isn't overpowering but I tend to dislike Tresseme scents. They're too shampoo-y smelling for me. I prefer natural fruity smells or coconut, which is my fave hair product scent.
Overall, this is an excellent smoothing serum for thick / coarse hair types, which is hard to find. A lot of serums are very, very light for those with thin / fine to normal hair.
I would definitely recommend this serum to women with my hair type.
I have used this several times a week since I bought it and surprisingly there's still a good amount left in the bottle. It is larger than most serum bottles so I guess that's an extra value added benefit. I can tell my hair is softer for sure, even the very damaged ends. It's not a miracle worker though, so although my ends are softer they are definitely not repaired. I am in need of a trim so I will definitely re-evaluate after my hair is trimmed.

I use this serum in my hair after every shower while my hair is still slightly damp. I have very thick hair and I feel that this product helps make my hair look straighter and shinier when it dries. My hair is also very long so I need 3 pumps to cover my hair although I do avoid putting it on my roots to prevent it from looking greasy. On certain days where my hair feels extremely dry I add a tiny bit to the ends which I find really helps make them look less damaged.

This product is just what I needed for my hair this Summer @TRESemmé (Keratin Smooth Keratin Infusing Serum) it help to eliminate frizz, but your hair keeps its bouncy and full look. It also makes your hair have incredible shine and a smooth look. Wonderful #TRESemmé Haircare. I personally endorse and love this product.

Awesome product! It helps eliminate frizz, and it makes the hair appear shinier ... and thus making it look healthy! I love how my hair feels after I use this product.

Excellent value for money. For this kind of product I normally would go for high end brands but this one is a winner and my hair is really difficult to deal with, so this should work well with almost any hair type!

My hair does feel soft. I have very fine-thin hair and whenever I pick up a product, I make sure it doesn't weigh me down or leave a sticky feeling. I didn't feel sticky at all, this formula gets As across the board for me. Keratin is good to help cure frizz. I tend to use it before blow drying but if I need to keep down flyaways- I dab a little on my hair.

I like a lot the products TRESemmé Keratin Smooth Keratin Infusing Serum ! My hairs are so soft and silky,after use this products ! The keratin are so good for the air ! Thank's to do this good products !!! ;-)