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KERATIN RESEARCH Brazilian Keratin Hair Treatment is a formaldehyde-free, advanced smoothing formula that straightens, repairs, and nourishes hair using a potent blend of Argan oil, collagen, proteins, and amino acids. Designed for long-lasting results of 4-6 months, this 240ml dual-pack delivers salon-quality blowout effects at home, restoring elasticity and shine while being safe for all hair types except bleached blondes.




| ASIN | B00S1S2T3O |
| Benefits | Smoothes and softens hair |
| Best Sellers Rank | 39,873 in Beauty ( See Top 100 in Beauty ) 6 in Chemical Hair Straighteners |
| Brand | KERATIN RESEARCH |
| Brand Name | KERATIN RESEARCH |
| Country Of Origin | USA |
| Customer Reviews | 3.8 out of 5 stars 5,556 Reviews |
| Global Trade Identification Number | 00821040720129 |
| Hair Type | All |
| Hair type | All |
| Item Form | Cream |
| Item Weight | 8 Ounces |
| Item form | Cream |
| Item weight | 8 Ounces |
| Manufacturer | KERATIN RESEARCH |
| Manufacturer Part Number | 821040120127 |
| Material Features | formaldehyde-free |
| Model Number | SG_B00S1S2T3O_US |
| Product benefits | Smoothes and softens hair |
| Scent | Coconut |
| Scent Name | Coconut |
| Special Ingredients | Argan oil, Coconut oil |
| UPC | 821040720129 |
| Unit Count | 240.0 millilitre |
A**K
Leaves hair straight
I use this product every year. Leaves the hair straight and easy to manage. As someone with thick long that tangles alot, this is a good product to use.
T**Y
It works
This product made my hair smooth and vastly reduced frizz. If you follow the instructions it works... I am a 63 years old white female with greying hair that's grey and frizzy all over but particularly around the hair line. It doesn't hold a curl & becomes frizzy as soon as I step outside. It has a little natural wave . It is coloured red although frizzy it is soft . I followed the instructions to a T. The results were smooth hair that shone and dried much quicker than normally. But if like me you have naturally flat hair but like me you like fulness..then bare in mind this will make your hair lank.. it's for this reason I won't be using it again...I like big hair and this product did smooth the cuticle but made my hair too flat to my head..if you have thick bushy hair that you want less bushy I can imagine it would work
V**H
New Formula is damaging
I have used this product previously and the results were fabulous. it left my hair soft and silky with a glass like shine. However... The most recent product came with new formula and usage instructions. After following the instructions to the letter it left my hair feeling like waxy straw and had lightened it a lot more than the previous formula. I have lost confidence in this product and will not be purchasing this again.
A**E
Pretty decent for type 4 hair and NO formaldehyde
If you’re in the U.K. - it has NO FORMALDEHYDE version. So no need to worry. You do get a strong smell when applying it to your hair though (open windows, maybe move around), but no scent or irritation when straightening your hair. It was a long process (expected) but considering I was technically saving £150 to do it myself, I cannot complain. The first affect was okay, it reduced my curl a little and made it shiny but not wavy or straight (which I didn’t want anyway), the back of my hair was very resistant. So I re-did the process but this time without using clarifying shampoo. This gave a better effect (from type 4 hair to now maybe 3b). So far (1 month), still good. I even swam every single day in the salty sea on holiday for a whole week and my hair remained as it was before, I did not need to straighten it or anything. With this your hair does feel drier if you’re not careful, but daily argan oil and castor oil (for VERY dry days) does the trick. I will use them again but I’ll use the treatment specifically for curlier hair.
M**B
An honest, non biased review of a product which works for my hair
This is the 4th time I’ve purchased this product and so I felt a review was justified. This product has honestly changed my life! A little dramatic I know but it really has in that it has saved me hundred of hours, this treatment takes about 3 hours to apply so yes it’s a slog but it really is worth it because once applied I do not heat treat my hair in any way shape or form for approximately 3 months. I just wash, air dry and go. Here are the before and after photos of my hair. As you can see following the treatment it is immaculately straight, this is before i wash it out (which will be tomorrow) so after tomorrow my hair will be less straight, and more defined curls with zero frizz which is exactly how I like it, I don’t dig the polka straight look but if I did, it would only take 10 minutes to achieve this look rather than 90 minutes which is how long it would normally take. If you’re looking for something which will make your curly hair more manageable and defined I would definitely give this a go. Warning! It does really quite sting your eyes so make sure you apply in a well ventilated room! ***update! I have now added photos of what it looked like after I washed the treatment out 48 hours later and left it to air dry.. (see photos taken in room with green walls) you can see how the roots are a little wavy (probably as I couldn’t get so close with the straighteners) I should also add that I used straightener set to 230 degree. In the past when I’ve used straightener which only peak at 180, the end result was not so straight
P**N
Still undecided
Ive used keratin treatment for many years now. My own fault but I expected the bottles to be bigger I didn't check this before I ordered. I usually use coco keratin treatment but thought i would give this brand a go. First the clarifying shampoo didnt seem to strip my hair as well as the others I've used in the past, not sure if this matters or not. This brand did leave a burning sensation on my scalp, more so than the coco brand. I followed the instructions, after straightening my hair felt like straw... I resisted the temptation to wash it out and waited overnight. Again if I was to compare with coco brand at this stage my hair felt better with that treatment. I washed and blow dried and straightened and yes I can tell its had keratin treatment, it feels softer and easier to manage but I can still feel the treatment in my hair, with coco at this point I can feel no dryness or left over treatment. It's only been a day so I'll report back on how it feels after a few more washes. I think next time I'll stick to what I know though 😏 *Update* Although it did the job, it didnt last as long as coco does, I'll be returning to using that as my go to.
L**.
AAAAmazing
This product is truly amazing ,I’m in my 60’s and I have very fine blonde hair due to bleaching and colouring over several year’s ,also I have a under active thyroid problem too which doesn’t help. In lockdown I sorted out some old family videos and my hair looked so different from the hair I have today , I still have my same hair style a short Bob but my hair used to move as I turned my head and it didn’t anymore UNTIL I had keratin research treatment on my hair my hair feels amazing and swishes lol . I have also been in contact with keratin research in Florida they have been so helpful answering any questions I put to them within hours they have a website so I do recommend you contact them directly if you have any questions you need answered. Hope this may help too I have been using plantur 39 and I must say I found it to do what it says on the tin, my hair loss in my comb was next to nothing whilst using it however since I’ve treated my hair with keratin I’ve used a sulphate free shampoo and conditioner as it advices , however my comb has again lots of hair fall in it . Problem solved as I have found a sulphate free caffeine shampoo with great reviews, it’s called Grow me shampoo by Waterman’s . I used Keratin research express treatment which I purchased on Amazon Uk be very careful of eBay as this product is selling on eBay with unbelievable postage charges, so please be very careful. keratin research say it has a good shelf life of up to 2 years after opening if stored correctly , a 120ml bottle will do 3 treatments on my short hair .
C**S
I liked it a lot
I have curly hair and this product straightened my hair. It's easy to use and the scent isn't too strong. I definitely won't change this product for another; I'll buy it again.
S**G
Terrible product
Never but this product, it smells like hell, and certainly has strong chemical good enough to cause cancer or other issues. I couldn't keep this product on my scalp for more than 2 hours and its been 2 months now, that I have lost half of my hairs. I never had a hair loss problem, prior to using this product. Absolutely, bad choice and terrible product for hair.
D**E
Great product
Works well, Easy to use Saves money ( same procedure in salon will cost 5 times more)
T**D
Nöjd
Den va faktiskt bra ! Nöjd
L**A
Consigliata
Fa il suo, gli liscia bene
D**D
Recomendable
Tratamiento muy recomendable te deja el pelo listín encrespamiento. Las instrucciones tan en inglés tuve k mirar tutoriales en YouTube.
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