KeraNew Reviews

( 35 reviews )

KeraNew Review: Efficacy & Side Effects

Reviewopedia staff  -  Updated:  July 16, 2023


KeraNew is a hair supplement that the seller Kintsugi Hair claims can help customers achieve fuller, thicker and more youthful looking hair by counteracting the harmful toxins that damage hair.

Kintsugi was founded by Paul Lindsey, a popular salon owner, who saw the need for hair restoration/repair products and states he’s partnered with both stylists and scientists to create a line of effective haircare products.

Product and Ingredients

KeraNew has an extensive ingredients list. 

Some ingredients, like Biotin, Vitamins A, C, D, E, and some specific B-vitamins, are known to be good for hair. [1], [2], [3]

According to the Kintsugi website you should take two capsules with 8 ounces of water, once per day.

KeraNew ingredients include:

Vitamin D3  -  deficiency has been linked to hair loss, shedding, thinning, and alopecia in multiple scientific research studies.  Hair loss from Vitamin D3 deficiency can affect someone at any age.

According to the studies, women were more likely to experience Vitamin D3 deficiency.  It’s important to note, too, that women who are perimenopausal may already have a deficiency in D3.


Vitamin E  -  A research study from 2010 did show that a Vitamin E supplement improved hair growth in those people who were already experiencing hair loss.

It's possible that Vitamin E’s antioxidant properties reduce what is known as oxidative stress on the scalp, which is linked with hair loss.


Kintsugi KeraNew Ingredients List

Kintsugi Keranew-Ingredients

( The KeraNew ingredients list is extensive  )


Niacin  -  has many health benefits for many parts of your body. It has been shown to improve nail, skin, and hair health.

It has also shown promise in laboratory testing for hair thinning and loss, particularly in women, but more data is needed to confirm this result.


Vitamin B6  -  has shown much promise in reducing hair loss and promoting new hair growth, which has been proven across multiple research studies.

Vitamin B6 has also shown promise in protecting hair against toxins in the environment. A vitamin B6 deficiency can also cause hair loss, but scientists noted an improvement in study subjects who did not have a B6 deficiency.


Biotin  -  is a B vitamin, also sometimes referred to as B7.  It’s found in foods such as bananas, milk, and eggs. 

Biotin deficiency has been found to cause hair thinning, as well as rashes on one’s face, particularly around the eyes, nose, and mouth.  Biotin deficiency can also cause high blood cholesterol and heart issues and has been linked to brittle nails.


Pantothenic Acid  -  has been linked to hair growth, but there haven’t been any research studies to confirm this.

It was once thought to help reduce skin damage and inflammation in patients who had undergone radiation therapy, but this has not been confirmed by laboratory testing.


Iron  -  There is a good deal of research spanning decades that links iron with hair loss and regrowing hair. A deficiency in iron can also cause hair loss.


Zinc  -  is what’s known as a trace mineral, meaning your body only requires a small amount to function. People typically get enough zinc from their normal diet.

Those with a zinc deficiency, however, can experience hair loss, as well as a number of other symptoms such as slow healing, impotence, diarrhea, weight loss, and decreased appetite.


Collagen  -  is a protein that your body makes naturally to maintain healthy joints and keep the elasticity in your skin.

As we age, the collagen is broken down by our bodies faster than we can make it, which makes sense when you think about how skin and joints change as you get older.

One of the issues with collagen supplements, though, is that it isn’t clear if consuming collagen has the same benefit as the collagen your body makes, as the collagen you consume will be broken down during digestion.

The study data has proved conflicting on this matter.


Keratin  -  Some people tend to get biotin and keratin confused, but while biotin is a vitamin, keratin is a protein found in the skin, hair, and nails.  Biotin is often linked to keratin because it helps your body break keratin down.

A keratin deficiency is rare, because your body gets sufficient keratin in foods like milk, eggs, and bananas, but there are factors that can contribute to keratin deficiency such as smoking, pregnancy, rapid weight loss, and malnourishment.


MSM (Methylsulfonylmethane)  -  is a sulfur compound found throughout nature in plants, animals, and human beings. 

It has been touted as effective for a range of conditions from arthritis, high cholesterol, and cancer, but scientific data on this supplement is lacking.

The most promising research has linked MSM as being beneficial to those with osteoarthritis and with exercise recovery.

Potential Side Effects

Certain KeraNew ingredients have the potential for side effects.

It's always a good idea to consult with a healthcare provider before starting any new supplement regimen.

Potential side effects include:

Vitamin E  -  You should avoid taking Vitamin E if you take cyclosporine, lovastatin, ketoconazole, Allegra, or Halcion. You should also avoid Vitamin E if you take any blood thinners, NSAIDS, chemotherapy drugs, medications to lower cholesterol.


Niacin  -  can cause flushing, particularly when you first begin taking it.  It can also cause diarrhea, upset stomach, liver problems, muscle damage, kidney issues, and changes to blood sugar levels.

You should avoid this supplement if you have liver or kidney disease, high blood pressure, or heart issues.  Those who take medicine for diabetes, blood thinning medication, antibiotics, or thyroid medication shouldn’t take niacin.


B6  -  Taking Vitamin B6 with Amiodarone can increase your sensitivity to light. You should avoid this vitamin if you take Dilantin, phenobarbital, or Levodopa.


Iron  -  If you have diabetes, you should talk to your doctor before you take an iron supplement. You should avoid iron supplements if you have a hemoglobin disorder.  Iron supplements can interact with antibiotics, so avoid iron while taking them.

Don’t take an iron supplement if you take bisphosphonates, Levodopa, Levothyroxine, Methyldopa, mycophenolate, penicillamine, or Chloramphenicol.


Zinc  -  can cause gastrointestinal symptoms such as nausea, vomiting, diarrhea and indigestion. You should avoid zinc if you are taking antibiotics, cisplatin, penicillamine, or amiloride.

Customer Reviews & Complaints

The company website has only published its five star reviews.  

Among those reviews are reports of experiencing incredible results such as hair growing back, improved hair appearance, and slowing down hair loss.

Outside of these reviews there’s not much independent online feedback for Kintsugi products.  

In the search results you will find many websites promoting KeraNew but be aware that they receive sales commissions for their efforts.

Kintsugi Hair has an A+ rating with the BBB with an average rating of 4.67/5 stars from over 80 customer reviews, with only 1 complaint filed in the last 3 years.

Customer Service

You can reach customer service at 1 (800) 935-4601 or by email at [email protected]

Customer service hours are Monday – Friday 6:00 AM to 5PM and Saturday and Sunday 6:00 AM to 4:00 PM PST.

You can also submit a form on the website.

The company’s address is: 22704 Ventura Blvd PMB 439 Woodland Hills, CA 91364-1333

Kintsugi KeraNew is backed by a 90 day money back warranty.  You will need to return products at your own expense.  If you have any issues contact customer service to initiate a refund.


Cost and Price Plans

  • 1 bottle  -  $78.00
  • 3 bottles  -  $211.00
  • 6 bottles  - $398.00

Kintsugi states that each purchase is backed with a 90-day money back guarantee.

Competitors and Alternatives

Nutrafol is a similar product, but with a more streamlined ingredient list.

It is a little pricey at $176.00 for a pack of two (120 pills), but it does have an impressive 4.3 out of five star rating on Amazon, taken from 5951 ratings.

Does KeraNew Really Work?

When we looked at the vitamins and minerals in this supplement, we were actually impressed with the choices that were made.

But when you look at the complete list of ingredients, there may simply be too many.

It’s often difficult to figure out how a supplement will affect what conditions a person has and what medications they have to take regularly.  

When you look at a list of ingredients this long, it’s hard to know how these ingredients will interact with each other, let alone with prescription medication.

If you’re interested in this supplement, we would encourage you to take the bottle to your doctor and make sure it’s safe for you to use and when you start the supplement, don’t take any other supplements or vitamins with it. 

Make sure to monitor any symptoms that may occur.

If you have any experience with Kintsugi KeraNew, please leave your reviews below.

See Also: What Vitamins and Supplements Should You Be Taking?

KeraNew Customer Reviews

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Looking better
December 1, 2023
I have only been using the products for about a month. I see that my hair looks fuller and with continuous use it will just get better.

See difference in one month
November 2, 2023
After one month I see fuller hair and filling in sparse area .

Be patient at first. First of all your hair will stop falling out and then growing again.
October 13, 2023

I am delighted to see that my hair stopped falling out very soon after I started using Kintsugi.

So I am confident that whatever I am growing in the future will stay on my head and grow to replenish all that I have lost.

So I will indeed carry on using it at least until I have my full head of hair again. Only then might I stop and see whether it begins to fall out again.

If that does happen I know what cures it and will return to using it once again.

Many thanks for success at last


My hair feels so much healthier!
October 11, 2023
After 8 weeks my hair feels so much healthier! So far I’m very pleased and can’t wait to see the results a couple months from now!

A big change in my hair, skin, and nails
October 7, 2023
I have been using Kintsugi KeraNew for the last three months and noticed a difference in my hair. My hair is stronger than before. There is less shedding. My hair feels thicker, and it is growing. My nails and facial skin have changed for the better.

Great Product
October 3, 2023
I’ve noticed a difference and I’m on my second bottle. I’m very satisfied.

Improvement in just 60 days!
September 16, 2023
Started using product 60 days ago and notice a difference already. My hair stylist says she noticed it as well. She was surprised that it is working so quickly to show new growth. Love this hair vitamin!

Definite improvement
September 11, 2023

Nothing drastic but my hair does seem fuller and stronger. I hope it increases the longer I use the product.

It works!
September 5, 2023
I started taking it May 1st (& it's Sept 5th now) & I can definitely tell a difference in my hair-I now have more of it! (& my hairdresser agrees!)

I am seeing results!
August 22, 2023
I am currently experiencing thicker hair and growth. i have been taking the product for a month and a half and iIm excited to say that it is working for me. looking forward to seeing greater results after 90 days!

Healthy hair
August 15, 2023
I’ve only been using this product for 2 months so it’s hard to write a huge review. But I will say I believe it’s making a difference in the volume of my hair. I plan to continue using this for at least 4 more months because that’s how many bottles I have on hand and I’ll go from there.

Very Good Hair Supplements!!!
July 29, 2023
I really like these supplements. I have not experienced any side effects from these like I did from other brands. I will continue to take Kintsugi KeraNew. Thank you so much!!

Change is possible at any age!
July 27, 2023
I am a stylist of 48 years and still working full time, I have many “senior” clients who are struggling with the many changes in hair as we get older. I decided to try this product and let them know what I think. My hair is color treated, mid length and a bit frizzy. I struggle in the summer with humidity and constantly looking for answers. I use professional products and treat my hair well. I have to say I do see a wonderful change in my hairs softness and manageability. It is full and holds it shape nicely. I shampoo every 2-3 days. I have also taken the advice to rinse for 30 seconds with cool water and I think that is amazing. I will recommend KeraNew to my clients.

Seeing results
July 26, 2023
It’s only been a couple of months but I’m definitely seeing results.

Awesome Hair
July 23, 2023
I love it . I had radiation and chemo and my hair was a mess so my boyfriend bought some Kintsugi KeraNew for me and I got hooked. My hair started growing, I love it and I buy it when I can.

Not sure yet
July 20, 2023
I'm not sure yet, not really seeing a difference so far. Maybe I need to see what happens in 6 mo's

AmberSmith August 10, 2023

Hello Sandy. My name is Amber, I am with Kintsugi Hair. I'm sorry to hear that you are not seeing the results you hoped for yet. We always recommend that you continue to use the product for the full span of your 90-day Money Back Guarantee to see the absolute best results. Other customers in similar situations have seen success by increasing your daily water intake and avoiding processed foods. As well as adding raw vegetables to your diet such as asparagus, garlic, dandelion greens, chicory root, artichokes, and onions. These vegetables contain natural prebiotics, which can greatly improve the effectiveness of your supplements. While many of our customers see great results with our formulas, we understand that they may not be for everyone. For this reason, we stand by our 90 day money back guarantee. If you find that our formula is not for you, it may be returned for a full refund. If you ever have any questions, please do not hesitate to reach out. My email is [email protected]. Have a nice day.

It works for fuller and shinier hair!
July 20, 2023
I love that it is not hard on my stomach, makes it easier to take every day. My part is definitely not as wide as it was and the patches seem to have filled in a bit as well.

July 15, 2023
Hair is noticeably filling in! About to order my next supply!

New hair growth
July 1, 2023

When I first ordered this product I was skeptical. I had lost a lot of hair, my forehead was at the back of my head. I really didn’t think there would be any hope because the reason I have lost my hair is because of all the medication I am taking. But surprisingly I am actually seeing some hair growth coming back. I am so happy and still cannot believe it that it is a fact I am actually seeing some hair return. Thank you KINTSUGi KeraNew.

It works on Dyed Hair!!!
June 22, 2023

I am finding that my color is staying longer, Oh, I forgot to tell you, I color my hair to cover the gray.

Anyway, usually after the first wash my color is back to white at the temple and face line. But not this time. It is still brown after the second washing.

Also, most exciting, is I am noticing more hair growth.

Thank you