INVERTO ONE Formaldehyde-Free Keratin Hair Treatment for Curly Hair by KERATIN RESEARCH - Kit with 120ml Treatment, Deep Moisturizing Mask, and Clarifying Shampoo

Here are the Instructions from the box (in case you got rid of yours):"CAREFULLY read all instructions & warnings prior to using the product in order to discern undesired effects and compatibility issues.The application process may take about 150 minutes depending on hair length and skills. It may require the help of another person. During the application, the treatment, when heated, releases fumes that may irritate you. Please perform a sample test prior to fully applying the product on the hair: Wear gloves and work in a well-ventilated area. Visit our website for the latest updated in instructions, video & tips.Please perform Allergy Patch test: Apply a small amount to an inconspicuous part of your body, like behind your ear then wait 24 hours to see how your skin reacts. Most likely it will itch for 10 to 20 minutes and go away. If you are still experiencing severe itching and/or burning sensation, do not use."Before you start: you will need the following : Gloves, Cape, bowl, brush, shower cap or plastic food wrap, blow dryer, flat iron capable of 450f, large hair clips, fine tooth comb (you need it to spread the product evenly), Easy comb and/or heat resistant comb (optional). This product may cause a " yellowing effect" on blonde colored hair while flat ironing. Pleasenote that blonde or red colored hair color may change while you are flat ironing it, so try adjusting the heat lower (400-410F) if you notice color changes while flat ironing, if any.1. Wash the hair well with clarifying shampoo twice, this will enable the opening of the cuticles.Rinse well and blow-dry. You may notice that it is hard to comb and that is normal after using clarifying shampoo. Blow dry 100% dry with high heat.2. Easy method: Wear gloves and place a manageable amount of the treatment in the palm of your hand. Apply to your hair from the root to the tip of your hair. To help distribute it better use a fine comb to push the product down and remove excess product. You may also massage the treatment into your hair, but do not massage the product on your scalp. Make sure it is evenly saturated.Loop the hair around your head in a circular pattern so the hair stays saturated place plastic wrap or shower cap over your hair to prevent it from air-drying. Wait 90 (ninety) minutes for thick hair and around 70-80 minutes for thin hair. Do not heat.2. Salon method (longer): Wear gloves and start applying the treatment product on very small locks of hair one at a time from the bottom of the Back section, from the root down, spreading the product evenly to the tips of the hair and verify that the hair is evenly and nicely saturated.Leave solution on the hair for and Wait 90 (ninety) minutes for thick hair and around 70-80 minutes for thin hair. It is extremely Important that the entire hair is completely covered with the solution and that the solution is evenly distributed throughout the hair.Loop the hair around your head in circular pattern so the hair stays saturated. Place plastic wrap or shower cap over your hair to prevent it from air-drying.Do not heat3. After waiting, wear gloves, remove the cover from the hair, squeeze excess product from the hair as much as you can and discard it. Rinse the hair lightly with warm water (no soap), towel dry, and [then] blow-dry the hair 100% using a brush with intention to straighten the hair. At this point the hair should be easy to comb and straighten.Separate the hair into 3 groups (optional).Start ironing the hair (temp 450F) using small strands: [it's] important to do small strands and not large groups. If the hair is fragile, thin and brittle use lower temperature range at 400F-420F.This is a very important step; use small strands, take your time, use 7 to 10 complete passes per strand.Do not rush.What's next, What to do, what to expect?A day or two later, Wash your hair with sulfate free shampoo and blow dry lightly.Now that you washed and treated the hair, it is recommended to use light flat iron touch (360f) over your hair (once a day) in the first few days as the hair is "getting used to" being straight and getting ready for the change.Avoid strong clips and pony tails bands forthe first few days. Do not sleep with wet hair.You may repeat the treatment if needed results were not achieved on the first time(You will need to use sulfate-free shampoo and conditioner to maintain your treatment.Please consider using our recommended products for best performance & money savings."

The best product out there. Using the products with formaldehyde burn my eyes and the results didn’t last long. With this product which I used multiple times before, results last 1-2 months more than the other ones and is formaldehyde free which doesn’t cause cancer. Very easy to use if you’re a DIY type of person. Results last even more than the time I went to Ulta and spent more than $300 to get it done by a professional in their salon. I have extremely curly hair which is almost waist long and it makes it silky straight. Half a bottle is enough for each use. I leave it on about 45 minutes before ironing. The whole process takes me less than 2 hours at home. Definitely recommend it.

I use to use Zelo, but the price changed. The first I used this my hair felt smooth and look fuller. I have 4a,b hair. My hair stayed straight through humidity. There was no bad smell.

The media could not be loaded. Please be VERY cautious. I lost a good portion of my hair. Initial application (May 2022) was stellar - see video. I was in love!!!!it felt so healthy. I did notice some shedding, but thought it was normal. So, 6 months later (November 2022) I completed a second application - second pic. My hair has been thinning since.Full disclosure: My hair was not virgin. I has a treatment of relaxed hair (Sept 2021). No issues. I also dyed my greys 2x since the first application. My hair is horrendous now. I don’t use heat daily, not even weekly. I should’ve gone to a professional. Thankfully, my hair grows fast…This is simply my experience.

I really love the inverto one Keratin treatment!! My hair is very shiny, soft and definently natural softens the hair and the best part is that there is no chemicals & is formaldehyde FREE. This product is a game changer, I highly recommend it!! Just applied, followed the instructions and so far so good!!

The perfect solution for those not wanting to go completely natural while still maintaining a smooth look. Inverto did that for me and then some. I transition without the big chop right on top of my perm and touched up my new growth. My hair shedding nearly null with every flatiron of my hair it looks better. The keratin has strengthen my hair no doubt. So for those wanting to ditch the perm, don’t hesitate one bit to try Inverto. It lasts longer than a perm heck my new growth even tamer. Humidity does nothing to it. Loving it and you will too. Easy breezy application…long lasting results.

Didn’t work on my hair

I liked that it made my hair semi softer. I really didn’t get the shine I had hoped for. The thing I didn’t like was the smell and the time it took to do. The sulfur smell is still there after 4 weeks. I won’t buy again. I will go back to getting my Brazilian Blowout.

I love them easy to use

I have afro hair. I do this myself at home and I find it easy to use. Follow the clear instructions and you will see how lovely your hair turns out. For pure sleekness, it lasts about 6-8 weeks for me because my hair grows quick. If I'll use the straigtener once a week with this product, it's really good. I don't redo it until 3-4 months and my hair is still very good, it gets puffy at the base because of the regrowth but I just use the straightener and it works well - once a week. It seems to make my regrowth softer too!

It is easy to use and the results are quite convenient. It does not damage the hair provides the shine and frizz control

horrible item it damaged my hair