

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.
✨ Unlock your hair’s ultimate glow-up in 90 minutes! ✨
The 90 MINUTES Brazilian Keratin Hair Treatment delivers a formaldehyde-free, protein-rich formula infused with Argan and Coconut oils that straightens and smooths most hair types in just 90 minutes. Designed for long-lasting results, it keeps hair soft, shiny, and frizz-free for 3 to 6 months, drastically reducing daily styling time while maintaining natural vibrancy and elasticity.



| ASIN | B08G3SY6KY |
| ASIN | B08G3SY6KY |
| Benefits | Straightening |
| Best Sellers Rank | 45,841 in Beauty ( See Top 100 in Beauty ) 478 in Hair Deep Conditioners & Treatments |
| Brand Name | KERATIN RESEARCH |
| Country Of Origin | USA |
| Country of origin | USA |
| Customer Reviews | 3.7 3.7 out of 5 stars (167) |
| Customer reviews | 3.7 3.7 out of 5 stars (167) |
| Hair Type | Coarse, Frizzy, Curly, Chemically Treated, Damaged |
| Item Form | Lotion |
| Manufacturer | KERATIN RESEARCH |
| Manufacturer | KERATIN RESEARCH |
| Manufacturer reference | 90MN-120 |
| Material Features | Paraben Free |
| Package Dimensions | 17 x 7.5 x 5.5 cm; 200 g |
| Scent Name | Unscented |
| Special Ingredients | Keratin, Argan Oil |
| UPC | 821040102864 821040102871 |
| Unit Count | 120.0 millilitre |
L**I
Sleek, soft, shiny hair
I have above the shoulder fine, wavy-frizzy coloured blonde hair that I can work into tight curls with gel. I've used other keratin and the formaldehyde formulas in the past and they all did the job, but I particularly liked this product as it took the least time to do. Some others took hours....washing, rinsing, waiting, drying, washing, waiting for neutralising, leaving conditioner on for 20 mins, etc, then not being able to style your hair for a day or two. This was so easy. I've had complements on my hair since I did it. I coloured my hair about 2 weeks after and I thought the ends looked more wavy so I just applied more about half way up. The condition of my hair was fine after. No matter which at home treatment you use you will still have to style or flat iron your hair after washing to get that sleek look, but it stays looking good all day and if you don't wash it the next day you might only have to touch up. I could never get it looking so good just using all my styling tools, and I'm not having to go over and over my hair with a flat iron. I don't know how long it will last but I am already ordering another one. It's a great price as well and on my length hair I'll get 2 uses out of it as well as my touch up. My favourite product so far.
T**A
No No
This is for what I paid 30£ with no results (pic up) It’s not working, it’s too little and has no effect! The only good thing: doesn’t smell bad and not affect your eyes while straightening. I feel cheated!
D**I
Amazing - wouldn’t spend £££££ on a professional treatment ever again
I was sceptical, as I’ve been having Brazilian blow dry’s for years, and didn’t believe a home treatment would work. It was recommended by a friend who has very different hair to my mixed race, curly prone to frizz hair - so I didn’t have high expectations. I can vouch that it’s excellent, the outcome is better than professional treatments I’ve had. I treated my hair and left on for three days - as I would a pro treatment (my friend who doesn’t want her hair to straighten just leaves hers for a couple of hours). The smell or fumes weren’t nearly as bad as I was expecting - not bad at all. On two occasions I inhaled a breath which tasted chemically, but that was it. What was slightly worrying, but I didn’t panic, was how dry my hair was for the three days- ridiculously so- like cardboard. Which was a little concerning but it does say in the instructions that hair can feel dry. I washed out the treatment and left my hair to dry naturally. Within an hour I knew that it’d worked. My very curly hair was smooth and wavy, without me doing anything to it - not my normal hair! I had a pro blow dry which I do weekly and it lasted a week before I needed to tidy it up with straighteners - usually I’ll touch up the following day! Super pleased, I would never pay £180 for a pro Brazilian blow dry ever again. Photos are of dried naturally post treatment and after a blow dry. The only thing it be aware is that it does strip colour, my toner was definitely stripped, so highlights now looked lighter.
E**C
Easy to use and I now have pencil straight hair.
I looked at lots of relaxers as I was worried about skin reactions due to allergies I have to beauty products and hair damage, I decided on this and did the patch test to check for reactions and I didn’t even get the itchiness that it said to expect for 20 mins. I followed the instructions and it took a couple of hours from start to finish. The product didn’t smell or irritate me and was super easy to apply. Once it was washed out, hair dried and straightened my hair was pencil straight. The only time it smelt strongly was during the straightening process and it did make my eyes water a little. I have red very wavy frizzy hair and only needed to use half the bottle to get an amazing result. It was easy to use and I will definitely purchase this again.
A**S
Great product
I have very curly hair and this straightened my hair perfectly. I have used many straightening treatments and this was by far one of the best. So easy to use, no nasty smell and because you rinse before straightening no tugging. My one concern is it strips the colour from your hair but if your prepared from that, definitely purchase.
M**I
Meh ..
the packing is not great. just 2 bottles in a bubble wrap - 1 preweash shampoo and the other, application For a male with short, hard wavy to curly hair, this unfortunately did not straighten them. It is still wavy to curly hair - but it became soft.... i had higher expectations. the directions of usage on site do not mention the use of blow dryer and a flat iron but the instructions with the delivery mentioned it. As I am a male with short but hard hair, I cant use a flat iron .. i did a blow dry just because they mentioned but it did not help. Kept it for about 110 minutes also as well :( Unfortunately a wasted attempt for me.
L**N
Brilliant!
Really smoothed my hair and I don’t even have to straighten it to tame the frizz anymore. I can also let it air dry with no heat and there’s still no frizz! So impressed! This is the second time I’ve used this. The first time last 6 months so it’s brilliant value for money. No formaldehyde so it doesn’t sting your eyes but it does have a faint smell for a few washes. Will buy again once it fades. I will say the bottle is tiny so you may need two if you have long thick hair. Mine is just below my shoulders. The only other thing is that if you have coloured hair do this process before colouring again as it fades hair so much. The first time I done it I’d just paid £330 for balayage and it stripped the colour out. The second time I done it I’d just coloured my hair dark briwn and it faded to a light auburn. It’s still in beautiful condition after re-colouring though and it’s usually like a ball of frizz afterwards. Highly recommend 10/10!
N**R
Awful! Bleaches hair
This product is absolutely awful! It smells horrible even with wearing a mask and gloves. It dries hair out and makes it sticky - and bleaches dyed hair in patches… I now have to buy hair dye again and try and help my situation. Do not use this product, do not buy this product! I’d rather use the old school traditional keratin treatment and not wash my hair for 3 days than this crap.
M**U
Super
A**E
Ich habe diese Keratinglättung benutzt, meine Haare sind aber jungfräulich sprich ich habe sie nie gefärbt oder blondiert. Ich habe 3a/3b locken und war sehr unzufrieden mit meinen Haaren (leide an Schilddrüsenunterfunktion). Meine Haare waren sehr spröde und trocken. Ich habe die Keratinglättung seit genau einem Monat jetzt drin und benutze auch spezielles Shampoo ohne Salze, Sulfate und Parabene. Ich habe mir mehrere youtube Videos angeguckt und die Behandlung nach dem glätten 3 Tage lang nicht gewaschen. Ich würde auch nicht empfehlen über 200grad die Haare zu glätten bei wellen/locken. Und ich bin 5-7 mal über die Strähnen und nicht 12 mal. Nächstes mal würde ich sogar noch weniger drüber gehen und eventuell das Glätteisen noch niedriger stellen und bei 190grad benutzen. Meine Haarroutine ist jetzt super easy aber nach dem waschen müssen die Haare am besten mit einer rundbürste und Föhn getrocknet werden. Und die Haare sind richtig glatt nach einem Monat sieht man mehr Volumen und minimale Wellen. Aber nach dem waschen kommen die locken nicht zurück, das finde ich auch gut so...
Trustpilot
3 weeks ago
2 months ago