GK HAIR Global Keratin The Best (33.8 Fl Oz/1000ml) Smoothing Keratin Hair Treatment - Professional Brazilian Complex Blowout Straightening For Silky Smooth & Frizz Free Hair

I wish I’d known about keratin treatments in the past. The process, I had a friend put the treatment in my hair to ensure each section was fully saturated and just so you know it can tangle the hair so care is needed, I rinsed out the product by myself and dried and straightened it. My hair afterwards was pretty tangly, it doesn’t normally so I hoped it was just because this product was still in my hair. I kept my hair dry for the next 5 days, anytime it got wet I dried and straightened again, I didn’t put my hair up or put it behind my ears.The result, once I washed my hair it dried super quick and straightened well and no longer felt dry or tangly. I was on holiday with humidity and my hair stayed perfect for the duration. I normally have to use all the products and it will still fuzz up but none of that. When my hair got wet and dried on its own it was still wavy but not fuzzy. When I’d straighten it the hair stayed that way. Unbelievable!I recommend this highly, I was worried from people’s reviews especially as I suffered from substantial hair loss over Covid and worried it would ruin my hair after taking that long to grow back. I needn’t be worried as it felt funny until the product was fully washed out but afterwards I had the hair of my dreams for holiday.It’s been a month and my hair has been more manageable after the gym and being caught in a few rain showers. I’ve been using a sulphate free shampoo which seems to be working to keep the keratin on the hair

I am extremely disappointed with GK hair straightening. After using this formulation, my hair has been severely damaged. It was left burnt with noticeable breakage and uncontrollable frizz throughout. Large sections of my hair have been affected, and it's nothing like the results I’ve experienced with using GK hair straightening previously.I've been using GK Hair products for years and have never encountered anything like this before. This was a new bottle so perhaps they've changed the formulation? The damage is so bad that even after using their deep conditioning mask and going to the hairdresser to get some Olaplex treatments, the hair still looks badly damaged. This product has ruined my hair and I would not recommend it to anyone.I expected much better quality from a brand I've trusted for so long, and I’m extremely disappointed and sad to see such irreversible damage.

Great product. I have thick Afro-Caribbean hair and although i didn't want my hair straight (just looser curls) it is great for both. So usually when i straighten my hair it holds for about a 1/2 days, now when i straighten my hair it lasts until i wash it. When i wash my hair my curls are looser with less frizz and much more manageable. It's been 2 months since i had the treatment and the effects of the treatment are still there. the only thing i would mention is that i straightened my hair with the product in (the instructions say you should was it off and then straighten) but at my hair is sooo thick i felt i needed more drastic measures. Overall i think its great and i will definitely repurchase.

This is a bit pricey but it is really good and I think worth the money and I have purchased this 3 times. A little goes a long way and so when you consider this, it is not so bad and worth the treat. I am 60 years old and my hair is course, dry and wavy and this is an excellent product.

I am wary to use unsure if tampered with apologies but it's so expensive I was feeling lil' bit insecure as to whether it's been replaced or else tampered with??

I have very course long hair and the 100ml tube was literally only just enough. It took 4 hours ladies, from start to finish. I used half a tube at a time so I could make sure I properly rationed the cream. I left it on for an hour and fifteen minutes and the results are better than when I go to the salon. I didn’t start an inch from the scalp, as directed, the roots are the bit that needs doing the most! I applied the treatment from the very bottom of the roots and nothing bad happened.Excellent.

It works beautifully and gives a wonderful thickness and sheen of Asian hair, lasts the 5 months, and is fabulous in every way. There is a smell of rotten garbage that comes from hair whenever one washes it, sweats, or gets it damp--it's vile and suffocating. The reason I'll never recommend or use this product again is simple: it provokes extreme hairloss, it falls out in clumps and sheds like a stay cat. My hair is everywhere, I get tangled in it at night. I've used this product for four years, twice annually, and went from very very thick and abundant hip length hair to shoulder length strands which I'll cut again as there's so little of it left I'm disgusted by the sight. First I thought it's seasonal, then lacking vitamins, always excuses because I loved how GK transformed my hair, until it's become clear that GK made me bald. My hairline went up and receded to the point of seeing my scalp from all angles, my ponytail is the thickness of a fringe I had prior to GK, and my hair is thin thin thin and brittle and super tense like a static scourer sponge. I can't describe my regret and tears, find another product, this one emits gasses which kill hair follicles.

This is not a genuine product. I have been using this treatment for years and the last two purchases I have received from this seller are defective. Arrives in a sealed bag but the seal in the product bottle has been burst and the product looks to be watered down. I thought previously it was more liquid because they had changed the product but having used the last bottle with no where near the same result I now feel very disappointed and cheated, especially when it costs £144 per bottle! Not again, I am sending this one back for a refund. Will be reporting the issue to amazon and will not be purchasing from this seller again.