Hi Kalei! The processing time for Colorsonic is 30 minutes. This information is in the instructions under #2-Color. You can also scan the QR code in the instructions to watch the How to video".
Reviews
Most Helpful Favourable Review
5 out of 5 stars.
Innovative hair coloring less messy& softer hair
a year ago
It’s hard to change behavior so it took me a while to try it. My first use was a bit challenging, but now I got the technique in place, I want to use this forever. Living in city apartment, no mess of hair coloring. Covered roots well (in my second use I was more precise) and also my hair feels so much softer. For roots I use 1 cartouche twice. Price higher than regular store hair color, but it is an innovative product and less messy leaving my hair soft after coloring. No drips.
34 people found this helpful
Show Reviews:
Most Helpful Critical Review
2 out of 5 stars.
Cartridge is not multi-use?
a year ago
Is there ANYONE out there that has re-used a cartridge? I have used 3 cartridges now for root touch-up. When I insert the (used) cartridge, the device tells me that the cartridge is more than half full. But when I start it, only the white developer comes out, no color. Same thing happened 3 times with 3 different cartridges, However, if I use a NEW, UNUSED cartridge, it works like it should. Not sure if the level indicator lights don‘t work as described, or the color dries up once seal is opened. Anyone else having this issue?
Also I have spent a long time on the phone with customer service. I got variable answers that did not help.
950 people found this helpful
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Non-Incentivised Reviews
1 to 8 of 29 Reviews.
1 – 8 of 29 Reviews
Most Recent
Review 1
Votes 0
1 out of 5 stars.
Great in theory but cartridges can be defective
3 months ago
Device wouldn’t dispense the actual die. Tried for several minutes and all that came out was the developer, color never mixed or dispensed. Returned the defective to target for another one and will report back on whether this one actually works. Make sure you save your receipt
Originally posted on Cartridge 6 Light Brown Natural
Helpful?
Response from L'Oreal:
3 months ago
LeCare
Hi Tjh815! Thank you for reaching out to share your experience about using The Colosonic Device. When you insert the cartridge, listen for the "click" sound to ensure that the cartridge in properly inserted. Feedback is valuable to us when making decisions about our products. Your feedback is appreciated and will be shared with others in our company for consideration.
Texas
Review 1
Votes 2
Age:35 to 44
Gender:Female
My eye color:Light Brown
My hair color:Medium Brown
My complexion:Light
My undertone:Neutral Undertone
1 out of 5 stars.
0/5 – Completely useless for gray coverage
4 months ago
I really wanted to like the L’Oréal Color Sonic and this was a gift for my birthday, but this product is absolutely useless when it comes to covering gray hair.
The device itself might be a good idea and the technology behind the applicator seems promising, but the hair color cartridges simply do not work. They do not cover gray hair at all.
I tried this twice to make sure it wasn’t user error.
• First, I used shade 5G.
• Then I gave it a second chance and tried shade 5.
The results were exactly the same both times: less than 10% gray coverage — honestly, probably not even 5%. It looks as if I applied nothing at all.
I’m attaching photos so you can clearly see the results. My gray hair is still completely visible, unchanged, and uncovered. This product did absolutely nothing.
For the price and the hype, this is extremely disappointing. A good machine means nothing if the color itself doesn’t work. I would not recommend this product to anyone, especially if gray coverage is your goal.
Would you purchase this again:No
Originally posted on Cartridge 5G Medium Brown Gold
Helpful?
Response from L'Oreal:
4 months ago
LeCare
Hi ACubillan! We are sorry to hear of your experience with Colorsonic Cartridge,5G-Medium Golden Brown. We know how disappointing it can be to look forward to a new application of color only to find that your results are not what you expected. Please reach put to us at the 800 number on the box, and give our Rep case #45084606 when you call.
Review 1
Vote 1
1 out of 5 stars.
Cool idea, almost zero white coverage
4 months ago
Light ash brown does not come close to covering white hairs. I saturated, waited 40 min, and it’s like I never did it. So so disappointed as the idea is brilliant and it was easy to use the device, so I took the towel off my head and , sigh. It’s supposed to be a full coverage product!!
Originally posted on Cartridge 6A Light Brown Ash
Helpful?
Response from L'Oreal:
4 months ago
LeCare
Hi Kkm617! Thank you for taking the opportunity to try Colorsonic Hair Color Device. We are sorry to hear you did not achieve coverage on white hair! We apologize for the inconvenience and will pass along your feedback to others in our company for consideration.
Orlando, Florida
Review 1
Votes 3
Age:55 to 64
Gender:Female
My eye color:Green
My hair color:Dark Blonde
My complexion:Light
My undertone:Neutral Undertone
5 out of 5 stars.
Great product
a year ago
Very easy to use. The after conditioner leaves the hair silky smooth.
Would you purchase this again:Yes
Originally posted on Cartridge
Helpful?
Florida
Review 1
Votes 4
Age:45 to 54
Gender:Female
My eye color:Dark Brown
My hair color:Dark Brown
My complexion:Medium
My undertone:Warm Undertone
2 out of 5 stars.
The color is NOT permanent, it fades away.
a year ago
The device is great but the expensive “permanent color’ is not permanent. It fades away on each wash, leaving the grey hair looking white/reddish. Money into the drain…
Would you purchase this again:No
Originally posted on Cartridge
Helpful?
Response from L'Oreal:
9 months ago
LeCare
Hi Tati! We appreciate hearing that Colorsonic Haircolor fades with each wash. Feedback from our customers is valuable to us when making decisions about our products. Your feedback is appreciated and will be shared with others in our company.
Review 1
Votes 3
5 out of 5 stars.
Great! What took you so long?
a year ago
I love this product! Well, I did lead it under Jacques Playe for 2 years too, so I may be biased. However, I believe in this product and hope L'Oreal continues to build out more colors of cartridges. Great job! (And thank you Julien for giving me a heads up!)
Originally posted on Cartridge 812A Medium Blonde Ash
Helpful?
Review 1
Votes 3
2 out of 5 stars.
Not yet perfected. Too expensive
a year ago
I really wanted to like the Colorsonic, but it is really more trouble than it is worth. First of all, it is very difficult to get the cleaning cartridge out of the wand. You will break several fingernails doing so. Secondly, it needs a serious learning curve for usage. The videos are not clear. BUT once the wand starts working, it is terrific and spreads the color in a way one cannot do with regular home color. NOW, once you find a color cartridge that works for you, do not believe that this $29.95 cartridge will give you 3 applications. It MAY give you almost two but surely NOT THREE! Luckily, i had some regular dye in my cabinet and had to add it to my SECOND use of the cartridge. I may purchase a cartridge once more, but if it empties so quickly, I may just have learned my lesson and not use it until the price comes down. It is NOT true that you can get 3 applications. I have normal sort of straight hair just touching my shoulders and it gets used up quickly. I think it is a genius IDEA, but I would not waste my money until the prices come down and the technology is better. Caveat Emptor! Conditioner is drying to your hair too, not usual for first color.
Originally posted on Cartridge
Helpful?
PA
Review 1
Votes 6
Age:65 or over
Gender:Female
My eye color:Hazel
My hair color:Light Blonde
My complexion:Fair
My undertone:Neutral Undertone
1 out of 5 stars.
Never Worked!
a year ago
Bought new for my wife for Christmas but never got device to work. Just tried to use on 2/4/2025. Used two color cartridges and it would never discharge color during initial test! Now I am out $200.
Would you purchase this again:No
Originally posted on Cartridge
Helpful?
1 – 8 of 29 Reviews
Reviews
Most Helpful Favourable Review
5 out of 5 stars.
Innovative hair coloring less messy& softer hair
a year ago
It’s hard to change behavior so it took me a while to try it. My first use was a bit challenging, but now I got the technique in place, I want to use this forever. Living in city apartment, no mess of hair coloring. Covered roots well (in my second use I was more precise) and also my hair feels so much softer. For roots I use 1 cartouche twice. Price higher than regular store hair color, but it is an innovative product and less messy leaving my hair soft after coloring. No drips.
34 people found this helpful
Show Reviews:
Most Helpful Critical Review
2 out of 5 stars.
Cartridge is not multi-use?
a year ago
Is there ANYONE out there that has re-used a cartridge? I have used 3 cartridges now for root touch-up. When I insert the (used) cartridge, the device tells me that the cartridge is more than half full. But when I start it, only the white developer comes out, no color. Same thing happened 3 times with 3 different cartridges, However, if I use a NEW, UNUSED cartridge, it works like it should. Not sure if the level indicator lights don‘t work as described, or the color dries up once seal is opened. Anyone else having this issue?
Also I have spent a long time on the phone with customer service. I got variable answers that did not help.
950 people found this helpful
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Non-Incentivised Reviews
9 to 29 of 29 Reviews.
9 – 29 of 29 Reviews
Most Recent
Review 1
Votes 2
4 out of 5 stars.
Frustrated.
a year ago
TThe Colorsonic is the fastest way to color your hair! My problem comes in with keeping the device in the appropriate position while doing the back of my head. It feels like I have all of the dispensing tips racking over the roots. Yet upon examination it's obvious that they have been at an angle and I have deposited color on the surface versus the roots. I have gone through much more of this expensive dye trying to correct it. I can't be the only on to have this isssue.
Originally posted on Cartridge
Helpful?
Review 1
Votes 2
3 out of 5 stars.
Not for gray hair
a year ago
I was excited to get this for Christman. I really like the colorsonic tool but the color that comes with it does not cover gray hair. I have used twice and both times had to recolor it. Disappointing!
Originally posted on Cartridge
Helpful?
Review 1
Vote 1
Age:45 to 54
Gender:Female
My eye color:Light Brown
My hair color:Light Brown
My complexion:Light
My undertone:Neutral Undertone
5 out of 5 stars.
I am hooked... love it
a year ago
Was so scared to try this.. I have my at home hair dying to a science.. so when my husband gave this to me I really didn't have the heart to tell him thanks but no thanks, plus he purchase the cartridge medium golden brown.. so after I few videos I decided to try it. I wanted it to blend and cover my roots and grey new growth but not do what most box dye do leave it one dimension. I followed the instructions but did not rub it through all the hair. Ran the machine from roots to end without rubbing it through with my hands. I did rub at temple when the grey always shows first. And I love it. Couldn't be happier. So for me I get another use out the cartridge which is even better.. I am hooked
Would you purchase this again:Yes
Originally posted on Cartridge
Helpful?
Review 1
Votes 3
1 out of 5 stars.
Not at all
a year ago
It doesn’t seem to dispense very well doesn’t cover grays very well! It says you get more than one application per tube not in my case! And I have sort hair!
Originally posted on Cartridge 5 Medium Natural Brown
Helpful?
Review 1
Votes 2
1 out of 5 stars.
it is probably good if you know how to use it.
a year ago
is frustrating to use it. what do I do unwrap it> why they do not send instruccions how to use it!!!
Originally posted on Cartridge
Helpful?
Review 1
Votes 0
2 out of 5 stars.
Quick, neat. Just didn’t work for my grey roots.
a year ago
Third cartridge. First one - no grey cover. Sure I did something wrong, I bought a second one. It seemed to mute the grey - in places. Second guessed myself that maybe I had jumped the gun when I immediately saw the green light and, perhaps, hadn’t waited the full 20 seconds, so I bought a third. Still not covering the gray. Called the number on the instruction sheet. Was advised that a
few people didn’t get grey coverage and that maybe I needed box color. I thought grey coverage was 100% guaranteed. Coupon, maybe? Then I asked rhe lady if it was normal for the device to respond to pressing the on/off intermittently and she indicated that was not unusual - ???
Since I bought it at target and through some fluke, they did not charge me and I called them and informed them and then they just said forget it and just keep it as a gift, I couldn’t really return it to Target. I’m left believing that the 100% can’t be guaranteed, but still not sure if the intermittent response of the device is not the problem. Disappointed.
Originally posted on Cartridge
Helpful?
Review 1
Votes 2
1 out of 5 stars.
Waste of money & ruined my hair color- 0/10
a year ago
First off the price for the amount of product you get or is not worth it. Secondly the color payoff is absolutely nowhere near any of the color shades on the boxes, plus the fact you have to buy a $135 brush to even use this product is a scam. Absolutely would not recommend, please save your money & buy literally anything else, the $12 box dye is better than this.
Originally posted on Cartridge
Helpful?
Florida
Review 1
Votes 0
Age:55 to 64
Gender:Female
My eye color:Dark Brown
My hair color:Medium Brown
My complexion:Medium
My undertone:Cool Undertone
2 out of 5 stars.
Sadly hair dye doesn’t cover gray.
a year ago
Device works great however the hair dye does not cover the gray. Second time using the product. No luck covering the gray.
Would you purchase this again:No
Originally posted on Cartridge 4 Dark Brown Natural
Helpful?
Review 1
Votes 6
Age:35 to 44
Gender:Female
My eye color:Dark Brown
My hair color:Dark Brown
My complexion:Light
My undertone:Neutral Undertone
1 out of 5 stars.
Needs improvement
a year ago
My second cartridge and the device is only dispensing the developer. It is not working properly.
My first cartridge also wasn’t mixing properly, and all of the product didn’t get used.
Originally posted on Cartridge 4 Dark Brown Natural
Helpful?
Response from L'Oreal:
a year ago
le care
Hi IrynaP, We are sorry to hear about your experience regarding Colorsonic. We would like to speak to you directly about it. Please call L'Oréal @ 800-631-7358 and provide reference # 37246409. We look forward to your call!
Chicago Illinois
Review 1
Votes 52
Age:45 to 54
Gender:Female
My eye color:Dark Brown
My hair color:Soft Black
My complexion:Medium
My undertone:Neutral Undertone
1 out of 5 stars.
Disappointing
a year ago
I see L’Oreal’s response to negative reviews is to call their help line. Please be aware I did this twice and it was very lengthy and completely unproductive. The representative clearly had no product knowledge and was giving me instructions contrary to the printed ones that come with the device. In my experience there is insufficient coverage for greys (I left the color on for 45 minutes) and the cartridges are not reusable (even though device indicates cartridge is more than half full). I’d pay a multiple of what the price is if the device worked well! Hope somebody makes an excellent version of this, it’s a v good idea not executed well :(
Would you purchase this again:No
Originally posted on Cartridge
Helpful?
Response from L'Oreal:
a year ago
Consumer Care Center
Hi AAAG! We are sorry to hear about the difficulties you experienced with your Colorsonic purchase. We strive to create high-quality products and experiences for our consumers, and we sincerely apologize that we did not meet your expectations. We're glad we could offer assistance and we appreciate you giving us the opportunity to make things right.
TN
Review 1
Votes 25
Age:45 to 54
Gender:Female
My eye color:Dark Brown
My hair color:Light Brown
My complexion:Light
My undertone:Neutral Undertone
5 out of 5 stars.
✔️✔️✔️👍👍👍
a year ago
I likes it. It was fast and easy. Suggestion- Please produce the L’oreal Hi-Color for dark hair cartridges. Please. Thank you.
Would you purchase this again:Yes
Originally posted on Cartridge
Helpful?
Review 1
Votes 35
Age:45 to 54
Gender:Female
My eye color:Hazel
My hair color:Dark Brown
My complexion:Medium
5 out of 5 stars.
Innovative hair coloring less messy& softer hair
a year ago
It’s hard to change behavior so it took me a while to try it. My first use was a bit challenging, but now I got the technique in place, I want to use this forever. Living in city apartment, no mess of hair coloring. Covered roots well (in my second use I was more precise) and also my hair feels so much softer. For roots I use 1 cartouche twice. Price higher than regular store hair color, but it is an innovative product and less messy leaving my hair soft after coloring. No drips.
Originally posted on Cartridge
Helpful?
Review 1
Votes 1367
2 out of 5 stars.
Cartridge is not multi-use?
a year ago
Is there ANYONE out there that has re-used a cartridge? I have used 3 cartridges now for root touch-up. When I insert the (used) cartridge, the device tells me that the cartridge is more than half full. But when I start it, only the white developer comes out, no color. Same thing happened 3 times with 3 different cartridges, However, if I use a NEW, UNUSED cartridge, it works like it should. Not sure if the level indicator lights don‘t work as described, or the color dries up once seal is opened. Anyone else having this issue?
Also I have spent a long time on the phone with customer service. I got variable answers that did not help.
Originally posted on Cartridge 2 Soft Black Natural
Helpful?
Review 1
Votes 19
Age:55 to 64
Gender:Female
My eye color:Light Brown
My hair color:Medium Brown
My complexion:Fair
My undertone:Cool Undertone
5 out of 5 stars.
Game changer and beautiful results
a year ago
[Employee of loreal] I use the shade 6, Light Brown, and what a game changer. Super fast to apply, clean, easy, especially to reach the back of my hair and without the need of a mirror. What I do though, I use my fingers for the front to make sure I covered all the little gray hair by my ears and temples. I do that regardless with any products. I also can re-use it, as soon as I see some grays growing...I don't have to wait to do a spot application. I love the results, not too dark, not too light, and super shiny.
Would you purchase this again:Yes
Originally posted on Cartridge 6 Light Brown Natural
Helpful?
Review 1
Votes 17
5 out of 5 stars.
Game changer
a year ago
Game changer! Made the application super fast and there was very little mess. I used shade 4 for a root touch-up and went through about half of the cartridge, but I can tell I used too much formula the first time! Colored again today and only needed 1/4th so I still have a bit left for my next coloration. The color looks very nice and blends well
Originally posted on Cartridge
Helpful?
El Paso, TX
Review 1
Votes 20
Age:35 to 44
Gender:Female
My eye color:Dark Brown
My hair color:Medium Brown
My complexion:Medium
My undertone:Warm Undertone
5 out of 5 stars.
Amazing, easy and fast
a year ago
This is amazing! First time using it, and it was super easy, quick and very little to no mess... very happy with the results! specially because I have a lot of grays and hate to waste too much time coloring my hair every 3 weeks, but now this is going to be easy and much faster... The only downside I can say is I almost emptied the cartridge in my first use, I was expecting to use it at least 2 times, but I must say I have a LOT of hair... maybe I used too much, will try a little less next time
Would you purchase this again:Yes
Originally posted on Cartridge
Helpful?
Review 1
Votes 17
5 out of 5 stars.
Impressed! I wish I had this sooner!
a year ago
I loved how easy and mess free is to color my hair now. I applied in less than 5minutes and i still have half of a cartridge left! It has been 3 weeks and my color is lasting so well.... so brilliant and with great gray coverage. I loved the little box it comes with... it fits perfectly under my sink. I will for sure get another cartridge soon!
Originally posted on Cartridge
Helpful?
Chicago IL
Review 1
Votes 17
Age:45 to 54
Gender:Female
My eye color:Dark Brown
My hair color:Medium Brown
My complexion:Deep
My undertone:Neutral Undertone
2 out of 5 stars.
Disappointed
a year ago
This cartridge is not multi use. I have used 3 cartridges now. The device shows that more than half the cartridge remains, but only the developer comes out, no color at all. Maybe the color dries up. Disappointing.
Would you purchase this again:No
Originally posted on Cartridge
Helpful?
Response from L'Oreal:
a year ago
Consumer Care Center
Hi AAmax! Thank you for taking the time to share your experience after trying out Colorsonic. We are sorry to hear this product did not meet your expectations. We'd love to help and learn more! Please call us @ 833-856-7325, M-F 9:00am-5:30pm EST. We look forward to hearing from you.
Florida
Review 1
Votes 22
Age:45 to 54
Gender:Female
My eye color:Blue
My hair color:Dark Brown
My complexion:Light
My undertone:Neutral Undertone
5 out of 5 stars.
Goodbye grays!
a year ago
I am so happy with this product. It is so easy to use. I purchased shade 4, beautiful color and covers all my grays.
Would you purchase this again:Yes
Originally posted on Cartridge
Helpful?
Review 1
Votes 20
2 out of 5 stars.
Color lasted me a couple of days
a year ago
Easy application but it literally started fading two days after application. Now one week later I have total grey roots. Pricey to have to apply weekly!!!
Originally posted on Cartridge
Helpful?
Response from L'Oreal:
a year ago
Consumer Care Center
Hi Cindylou! Thank you for sharing your feedback after trying the new Colorsonic Hair Color. We are sorry to hear your results were different than expected.
For resistant gray, we recommend extending your timing for an additional 5-10 minutes.
We want to ensure every user has the best hair color result possible. We'd love to learn more about your experience, feel free to text or call us @833-856-7325 Monday - Friday, 9:00 AM - 5:30 PM ET.
San Francisco
Review 1
Votes 16
Age:65 or over
Gender:Female
My eye color:Dark Brown
My hair color:Darkest Brown
My complexion:Medium
My undertone:Warm Undertone
4 out of 5 stars.
Easy to Use…..
a year ago
My first time using the colorsonic. It’s best to watch a video before using. I tried to remove the label and cardboard wrapped around cartridge🤦🏻♀️. Then before taking off the whole label, I realized it’s not to be removed. All good after. The color did drip down on my face but came off easily. What amazed me was that the top I had on, got color on it, however it washed right out!! Didn’t wash out of my hair, on third wash. I doubt if I’ll get three root touch up, will be lucky to get two. Expensive at $29, still less than salon.
Would you purchase this again:Yes
Originally posted on Cartridge 5 Medium Natural Brown
Helpful?
9 – 29 of 29 Reviews
