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KERATIN RESEARCH 4x 120ml Complex is a professional-grade Brazilian keratin hair treatment set designed to deliver long-lasting (4-6 months) frizz control, intense hydration, and salon-quality shine. Featuring a unique express formula, it eliminates the typical 3-day wait, making it ideal for busy professionals seeking effortless, manageable hair. The set includes a clarifying shampoo, moisturizing shampoo, conditioner, and keratin treatment enriched with argan and coconut oils, collagen, and amino acids to strengthen and smooth coarse, curly, or damaged hair. Backed by easy-to-follow instructions and expert video support, it offers a cost-effective, time-saving solution for at-home or salon use.







| ASIN | B09RP2VZVS |
| Best Sellers Rank | #59,618 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #33 in Chemical Hair Straighteners |
| Brand | KERATIN RESEARCH |
| Brand Name | KERATIN RESEARCH |
| Customer Reviews | 4.2 out of 5 stars 1,072 Reviews |
| Hair Type | Coarse, Frizzy, Curly, Chemically Treated, Damaged |
| Item Form | Liquid |
| Item Weight | 1.5 pounds |
| Manufacturer | KERATIN RESEARCH |
| Manufacturer Part Number | GLVAR |
| Material Features | Natural |
| Model Number | GLVAR |
| Number of Items | 1 |
| Product Benefits | Frizz Control,Hydrating,Intense Conditioning,Moisturizing,Shine,Smoothening,Softening,Split Ends,Straightening,Strengthens Product Benefits Frizz Control,Hydrating,Intense Conditioning,Moisturizing,Shine,Smoothening,Softening,Split Ends,Straightening,Strengthens See more |
| Scent | ORIGINAL |
| Scent Name | ORIGINAL |
| Set Name | Keratin Research 4-Piece Hair Treatment Set |
| Special Ingredients | Argan oil, coconut oils, proteins, amino acid complexes |
| Unit Count | 4 Fluid Ounces |
R**.
Great affordable straightening option for men with curly short hair
I have had very frizzy/curly blonde hair since I was young. I now have short hair, slightly over an inch long on the top. I like to blow dry my hair to style it into shape. I have been using this treatment for 2+ years now, about every 4-6 weeks. Without this keratin treatment I can't really shape my hair at all. Blowdryers don't create shape that holds and flatirons make my hair awkwardly bone straight. Pros of this product: - Result is great for 3-4 weeks and makes my hair so much faster and easier to style with a round brush. This saves me so much time fighting with my hairspray and comb to get the front of my hair to look nice. - Very quick to apply on men's short hair (takes me like 5-7 mins to comb through). - Can wash out next day, don't need to wait 3 days like common salon products. I usually try to wash out after 12 hours, but have waited as little as 8 hours before too. Cons: - Once your roots grow out with short hair, it becomes much harder to style. So I do have to re-do this process about once monthly. That's not the product's fault, but worth calling out for men with short hair considering this. I think the net time savings though every morning is worth the 45-60 mins this takes me monthly. - To get the best results, you'll want to buy a skinny straightener specifically designed for men with short hair. That enables you to get down to the root of your hair when you straighten it during the treatment. There are plenty of affordable options on Amazon. - The smell is chemically, but honestly not that bad. - The fumes do irritate my eyes. But it's not unbearable. Having a fan is a game changer. Merely cracking the window doesn't really reduce the irritation. Overall I very much recommend this product to men with curly hair who want the ability to shape their hair more. Love the way my hair looks, especially the first couple weeks after I do the treatment.
B**Y
Perfect for unmanageable hair
My natural hair ranges from straight to 2c depending on which part of the head you look at. It’s also quite thin, not a lot of hair density, but the strands are coarse and prone to kinky frizz. Because of all these factors it’s very hard to style. I tried curly girl for several years and I got so frustrated with how much time it takes and how inconsistent my hair looked. ENTER: This product!! It is truly a keratin (formaldehyde) treatment that semi-permanently straightens your hair. I’ve used it twice now (first time was several years ago) with the same great results. On my frizzy wavy hair it AIR DRIES perfectly straight and shiny for about 2 months, and then the waves start to come back a tiny bit and of course they grow back at the top. The hair that has been treated stays smoother than normal FOREVER. It is ‘semi permanent’ but for me it was basically permanent until the hair grew out. Some frizz and some wave came back but never at full force. I thought that was great but just fyi. It doesn’t really hold a curl for the first week but after that it curls just fine for me. The process takes many hours if you do it alone. And your arms will get tired. I agree with all the reviews that say to do it in a well ventilated space, and make sure you have a flat iron that gets hot enough. You may need help if you aren’t used to straightening the back of your hair. Overall, I love this product. I don’t have to spend time on my hair anymore unless I want to.
S**L
Excellent At Home Keratin Treatment!
Oh I wish I could add a before and after picture! Went from frizzy to smooth in one treatment! I used this Original Formula Keratin tx after shampooing with the clarifying shampoo the night before-yup I'm that lazy I let it airdry overnight, I didn't want to blowdry my long hair twice...Anyway, the next day: took my time, applied the easy method (with my fingertips), combing out any excess with a fine tooth comb, followed directions: cover with plastic for 30 min, blowdry 100% and flat ironin small sections: and WOW-looks like I went to the salon! I am soooo impressed with this product. Does it smell like keratin, yep, so use in well ventilated room. I suggest using less is more (because you leave product in hair and have to dry it 100% before flat ironing), I used about 1.5 oz of product and my hair is long, med fine, with uneven wave/curl pattern at nape and back of head especially: so I sectioned and made sure I straightened those areas most since they are hard to reach and my problem areas. And with this Florida temps being both hot and humid, my hair was a frizzy, hot mess-not anymore!!! I now LOVE my hair after this treatment: Smooth, Straight, Sleek! Super product: 5 stars+
P**R
Dangerous
I don’t know ? does seller try product before launch in the market or not but . I must suggest before selling any such product tried on your own . I bought this product . no doubt I check review before . I thought every hair product has some chemical specially in hair straightening . But this product attract by mention that it has some oils in it. I thought that must be good and not harmful at all . When it came I opened and smelled . First doesn’t smell strong . I thought it’s good to apply and leave for 3 days as per directions but when I applied . It hurt my eyes and nose really bad couldn’t breath . I must say this is completely harmful for eyes and health . If someone face any serous eye problem then would no doubt because this product . I would strictly not recommend to anyone to buy this product and put your health and eyes in risk . I regret to use that . I want my money back . My eyes still burning . I also want to mention here . I had to do just touch up for new growth . Not from the roots obviously . I done my hair straighten last year . I used their shampoo as it was recommended and just one wash it turned my whole hair into curl . I had no choice left to use their product and this shampoo also made dandruff just in one wash like I flour in my hair. Really bad experience surprising thing you can give ur review without rating star . This product doesn’t deserve even one star.
T**E
Worked Well on My Tight Curls
I used this keratin product last year, and overall it worked pretty well for me. I have really tight curls, and it definitely made my hair straighter and easier to manage, especially when I did a sew-in. It didn’t get my hair bone-straight (which makes sense given my curl pattern), but it still did its job and made a big difference. One thing to note: the smell is very strong. I highly recommend applying it in a well-ventilated area or somewhere with windows open, because the scent lingers for a day or two. Also, you have to leave it in overnight for the best results. I’ll admit I was a little impatient, which might be why I didn’t get the maximum outcome. That said, for the price and purpose, it’s a good product if you’re looking for something to help loosen curls and make straight styles last longer.
A**R
Love it
I was a bit worried it would damage my hair because I have never done a keratin myself at home but it’s total worth it. You will need someone helping you do it because the smell is strong that you might need to cover your nose and face with a towel because your eyes will water by how strong the smell is. But just follow the instructions and it really works. Now that it’s all complete, I wash my hair regularly and all I have to do is blow dry it and I don’t see any Frizz and my hair is so much softer. I promise it’s worth it but remember when your applying the Keratin have someone help you or someone else do it for you.
R**.
I like it
Love it! I left on my hair 24 hours ago,it says just 3 but for better results I did it!I like it so will see how long it lasts
K**A
Resuelve
Más o menos
C**B
Keine Wirkung – Geldverschwendung
Ich bin sehr enttäuscht von diesem Produkt. Die Flaschen sind sehr klein und die Menge reicht kaum aus. Ich habe das Produkt wie empfohlen verwendet, aber leider überhaupt keine Wirkung festgestellt. Für den Preis lohnt es sich meiner Meinung nach nicht. Ich werde dieses Produkt definitiv nicht noch einmal kaufen und kann es leider nicht weiterempfehlen.
V**I
Unersetzbar
Arbeite professionell damit. Auf ein gutes Ergebnis kann ich mich immer verlassen. Einige Produkte davor ausprobiert, keins kommt hier nahe.
D**H
Best Ever!
I have used a lot of different keratin treatments in the past but this is literally the best by far! I clicked on the QR code and followed instructions of how to apply. It was easy and the results.. perfect. Did not leave any residue and my hair was soft and silky. Even after i washed my hair for the first time after, my hair is so much more manageable! I have already recommended to to family members and will definitely continue to use this product in the future! I am not sure but I think my hair is type 3b or 3c.
A**E
Not long lasting,only 3 weeks
Not that long lasting despite following the instructions to a tea. Lasted for about 3 weeks then started reverting back. Won’t buy again. Still giving 3 stars because the initial result was very pleasing.
H**!
Produkten luktar inte så mycket och funkar bra.
Jag är jätte nöjd.
Trustpilot
2 weeks ago
5 days ago