KERATIN RESEARCH Brazilian Keratin Hair Straightening and Smoothing Blowout Treatment Professional Organic Results shiny Hair with Natural look Queratina Keratina (4 OZ Original)
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- – 4-month term
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Thursday, Jul 10
Size: 4 Fl Oz (Pack of 1)
Features
- Straighten, smooth, strengthen and repair damage across all hair types. Results last 4-6 months, far surpassing temporary keratin masks
- Professional-grade results at home or salon. Effective formula containing a powerful blend of Keratin proteins, Argan oil, and Collagen Amino Acids.
- Easy-to-apply instructions. Responsive support available to answer any questions.
- Save time and wake up with smooth, beautiful hair every day.
- Includes 120ml Keratin treatment bottle. for a very long hair and or thick/coarse please get 2 bottles or the 10oz version
Brand: KERATIN RESEARCH
Hair Type: Curly, Coarse, Chemically Treated, Frizzy, Damaged
Item Weight: 0.25 Pounds
Product Benefits: 4-6 months of straight hair, damage repair, frizz-free hair
Item Form: Cream
Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 4 x 1 x 1 inches; 4 ounces
Item model number ‏ : ‎
UPC ‏ : ‎
Manufacturer ‏ : ‎ KERATIN RESEARCH
Country of Origin ‏ : ‎ USA
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jul 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
It works. I have 4C hair. I washed my hair with the clarifying shampoo. Next, I applied the conditioner. Because I am an overachiever, I slept overnight with the product in my hair. The next day, I blow-dried my hair. After blow-drying my hair, I flat-ironed it. It was quicker to dry and easier to flat-iron. A week later, I washed my hair. This product took my hair from 4C to a loose, wavy type. I absolutely love it.. DO NOT LEAVE AMAZON WITHOUT IT.
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Reviewed in the United States on June 27, 2025 by Tea
I have been getting my hair keratined since 2006 and wanted to do it myself this time. I was so happy with my results of this product. However, You do need to use it in a well ventilated area. I tried using a mask but it just made it worse. I do give it 5 stars.
Reviewed in the United States on June 11, 2025 by Debra
He usado este producto por años y es Excelente. Deja mi cabello precioso.
Reviewed in the United States on June 24, 2025 by Olys Pacheco
It lasted me almost two and a half months, I didn't have to use all of the product even though it's a small bottle, I had half left to use again, i recommend, for it to last more you also have to use the right shampoo and conditioner for keratin, my hair looks the same curly when I wash it, but it does leave it softer and easier to manage and when it's time to dry my hair, I can straighten it very quickly in less than an hour with a hairdryer brush.
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Reviewed in the United States on May 23, 2025 by jessica jessica
I buy this product often since my bangs are curly while my long hair is on the straight side. I only use it on my bangs and it does the job. I do this treatment 2-3 times each year and it's much cheaper than the salon with the same results
Reviewed in the United States on May 25, 2025 by Mrs. Susan P
We followed all the instructions. The process took over 5 hours. She waited 4 days to wash her hair and then when she did and let it air dry the outcome is shown in picture 3. She’s so disappointed. This is our first time doing it so we made sure to buy the correct shampoo and conditioner and everything.
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Reviewed in the United States on May 31, 2025 by Rockhead789 Rockhead789
It really does work!! I have tried every type of treatment out there and my hair is so unresponsive. I've tried relaxers, I've tried perms with big curlers to soften the curl, I even got a brazilian hair treatment in the salon that did NOTHING. And let me tell you, I have very stubborn hair. I have 3B type curls and have always struggled to control it and make it pretty. My hair is coarse and fine and 50% frizz and the curls aren't uniform so it's not a good look. It takes an hour to straighten it and once it's straight it's so stiff that it doesn't look natural. I chose this product because it had such a high rating and because it seemed to be legit. I was very suspicious of all the products I looked at because even though they used so fancy name brand product on my hair at the salon it obviously wasn't strong enough to work on my hair (it did work on my cousin's wavy hair though, and took out almost all the frizz, my hair is just stubborn!!) Also, I didn't want to spend a ton of money on something that might not work so I picked this because it was a trial size. I only used about half of it so there's enough left over for another go around, it's awesome! I didn't even follow the directions and it still worked wonderfully. Let me tell you what I did: I didn't use a clarifying shampoo because I didn't want to go buy one, I just washed my hair really thoroughly and scrubbed at my scalp really good to clear away any dead skin or product. Then I rinsed my hair really well to best get rid of any soap residue. I blew it dry (a terrifying sight for my fiance!) and started to apply the product. WHEW the chemicals are strong. I would recommend doing it in a well ventilated room if at all possible because I kept having to stick my head out of the bathroom so my eyes would stop burning. I was not delicate about the application, I ended up putting too much in and my hair was def over-saturated but that's what I wanted! I let it sit in my hair for thirty minutes while I surfed the internet. I then took a fine comb and combed through my whole head getting rid of the excess product. The directions say to immediately start straightening on soaking wet hair and to me that just felt wrong and like I was going to burn my hair. So what I actually did was blow my hair dry again and THEN I straightened it. I took extra time on each section to make sure I sealed the product into my hair. It probably took an hour but obviously it was worth it. Then the gross part is that your hair is stiff and sort of greasy from the product and you can't do anything about it. You're not supposed to pull your hair back, you just have to leave it straight and down and looking yucky. The directions said to leave it in for 72 hours for very curly hair, but I had to shower after 24 hours because I had to go to work. So for the first three days I didn't shampoo it, just rinsed it and used a little conditioner, which I hardly even needed cause it worked so well. My roots are straight which is a HUGE deal as that is usually the curliest part of my hair. There is still a good amount of curl to it (because the directions say "for very curly hair leave product in for 72 hours" and I only left it in for 24 hours) at the bottom but it's pretty and manageable. The biggest difference is that there is practically ZERO frizz and the hair is SO soft. It actually looks so much healthier than before I did the treatment. I'M SO HAPPY WITH THE RESULTS! As I have half the bottle left, I will probably try again in 3 months or so and I will leave it in for longer to see if that affects the curl. I really don't feel comfortable with flat ironing soaking wet hair like the instructions tell you to but maybe someone else can let me know how it went for them and I will give it a try. I really think if I had followed the instructions to a t that my hair would have come out beautiful and straight. No regrets, I still love the results!
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Reviewed in the United States on February 11, 2013 by Brittany
Didn’t really work
Reviewed in the United States on June 18, 2025 by xyl