10 Best Hair Loss Concealers in 2021

Why am I discussing the best hair fibers (also known as hair loss concealers) on a hair loss cure site? Largely because of my own great results from trying out hair building fibers in the past.

When I first wrote this post, there were only five or so well known concealers in the market. In 2021, there are well over twenty. I list the top 10 in the second half of this post further below.

In 2016, I got a haircut and really disliked seeing an increasingly visible small bald spot in my receding hairline. The frontal scalp region frames ones face, and my thinning hair and bald patch in that area was annoying.

Toppik hair fibers color options.

Therefore, for the first time in my life I decided to try out a hair loss concealer (Toppik hair building fibers) seriously. I was doing this for largely experimentation purposes, with no desire for long-term daily usage.

I was not keen to try out a hair loss treatment such as scalp micropigmentation, since I prefer longer hair. Note that while scalp micropigmentation and tricopigmentation can both give the illusion of longer hair, they are still in 2-dimensional format rather than 3-dimensional format.

Caboki Hair Loss Concealer.
Caboki Hair Loss Concealer.

Initially I had reservations about my experiment due to possible hair fiber side effects and other issues such as: scalp rashes and itchiness; a messy spray type application process; rain and wind causing some of the powder or hair fibers (if not waterproof) to run onto my forehead; the color of the hair loss concealer not exactly matching my natural hair color; the dye discoloring my pillow; the fibers not sticking to my hair; and finally, I did not want to become addicted to the product! Nevertheless, I decided to proceed.

My Experience with Toppik Hair Building Fibers

I chose to try out a product called Toppik, largely because it was one of three popular highly rated products (the other two being Caboki and Dermmatch) that I had heard of over and over for many years. See the list of the best hair fibers (spelled “fibres” in the UK) and concealers based on ratings and reviews further below.

Toppik Hair Building Fibers.
Hair Loss Concealers: Toppik Hair Building Fibers.

For around five consecutive days after my haircut, I sprinkled a small quantity of the concealer onto the small barren patch of my frontal scalp region. I did this every morning after a shower, once my hair was totally dry. I was quite impressed at the ease of the process of applying Toppik. It was not messy whatsoever and had few disadvantages other than not being entirely waterproof.

More importantly, the results were excellent. Just a few shakes/ sprinkles of Toppik black were sufficient to totally cover my small bald region. Moreover, the product never came off during the course of the day (even in significant wind) unless I happened to sleep on a bed and rub my scalp against a pillow for a significant period of time.

Even then, the pillow did not become dirty. The hair fibers just came off without discoloring anything they fell on. Showering the next day removed all the product from my hair, without getting the bathtub dirty. All in all, I was quite impressed with Toppik and therefore decided to write this post.

The Best Reviewed Hair Loss Concealers

While far from being a permanent solution for hair loss, hair loss concealers are a great camouflaging option for many people. Best results and greatest satisfaction will be attained by people with minimal totally bald patches on their scalps. However, there are many videos on youtube where hair building fibers are even very helpful for people with extensive hair loss. Amazon.com reviews of virtually all hair loss fibers and bald spot concealers are generally favorable. Women are also often very pleased with hair loss fibers.

Below, I list and compare the most popular hair loss concealer products out there based on number of Amazon reviews (if there are many versions of a product that are sold separately, I only consider the most reviewed one). Keep in mind that there are many fake reviews out there in the online world. You should pay most attention to the ratings that come from verified users who have reviewed a diverse range of products for at least a few years.

Virtually all hair loss concealer products are deemed to work well for people of all ethnicities, as well as for both men and women. Just make sure to pick the right color for your particular hair.

The Best Hair Fibers in 2021

Toppik Hair Building FibersToppik Hair Building Keratin (Wool) Hair Fibers

This is the bestselling hair loss concealer product on Amazon with over 20,300  reviews averaging 4.4/5 stars at the time of updating this post. As discussed earlier, I used this product and was very pleased with it. Be careful that you pick the correct color (nine choices) and size options before buying Toppik. As you can tell from the reviews, a lot of women love this product too. My own salt shaker type container of Toppik is made in the US by a company called Spencer Forrest. The main ingredients are keratin, silica, ammonium chloride and DMDM Hydantoin (plus added artificial colors). The keratin is sourced from wool according to the Toppik website’s FAQ section.

Each small bottle will last for a month or two depending on extent of daily use and extent of balding area. Note that I did not use a Toppik brand FiberHold Spray to cover bald spots. The hair concealer spray for thinning hair is recommended for concurrent use with the fibres for best results. Neither did I use the Toppik Spray Applicator that is supposed to help make the application process more precise.

Also note that while the company’s website states that rain will not remove the fibers from your scalp, I have my doubts. Many reviewers suggest that scalp concealers for thinning hair are never fully waterproof. You probably want to avoid heavy rain when using Toppik or any bald spot concealer products.

XFusion Hair FibersXFusion Keratin (Wool) Fibers

This is a product that I had never heard about before I started writing this post. Apparently, despite having its own website, XFusion is made by the same US-based company (Spencer Forrest) that makes Toppik and contains the same wool based keratin ingredient. On Amazon, the product currently has almost 5,000 ratings averaging 4.5/5 stars. XFusion is significantly cheaper in comparison to Toppik for the same quantity of product. It is available in nine different colors, although each option is sold on separate product pages. (Note that Spencer Forrest also produces a third line of hair concealer products called Couvre).

Caboki Hair Loss ConcealerCaboki Natural (Gossypium Herbaceum Cotton) Hair Loss Concealer

I have seen Caboki ads all over the internet during the past several years. On Amazon, the product has 2162  reviews averaging 4.4/5 stars as of today. The great thing about this product is that it seems to be totally natural per the list of ingredients: “Moroccan Gossypium Herbaceum and mineral-based colorants (natural iron oxide)”. On the company’s website they are currently offering a free sample. The manufacturer is headquartered in the US. Caboki is offered in seven different color choices. It seems like the two most compared hair loss concealers by hair loss consumers are Toppik versus Caboki.

Hair Illusion Natural FibersHair Illusion 100% Natural Human Hair Fibers

Hair Illusions’s very unique and interesting 100 percent natural human hair fiber product currently has 1300 reviews averaging 4.1/5 stars. The product has eight color options for both men and women. However, on the company’s website, they do not have much information on where the human hair is sourced from. Hair Illusion is based in the US, but no actual address is shown on their website.

Strand Maximizer Thinning Hair ConcealerStrand Maximizer Keratin Hair Fibers

Yet another keratin based product, although unlike the earlier wool-based ones, this one does not disclose the exact type of keratin used. Currently almost 1400  reviews averaging 3.9/5 stars on Amazon. Available in ten unique colors. The company is based in the US.

Infinity Hair Building FibersInfinity Rayon Based Hair Building Micro-Fibers

As of today, this Infinity hair fibers product had 841 reviews averaging 4.1/5 stars on Amazon. However, I could not find anything about the location of company or the Infinity hair fiber ingredients on the company’s website. They do have a FAQ section and easily visible contact options. The ingredients of Infinity are listed as “Rayon; may contain: CI 47000, CI 14700, CI 42102.” The latter three are various artificial colors. Infinity comes in ten color options.

CUVVA Keratin Hair FibersCuvva Keratin Hair Fibers

While several of the earlier mentioned keratin fiber products were made from wool, US-based Cuvva does not disclose that information and just states the following on its site: “Cuvva hair fibers are made up of pure, organic keratin protein, just like all human hair. They are charged with a precise level of electrostatic energy in order to form the maximum magnetic attraction to your thinnest hair. There are no harmful chemicals or additives whatsoever.” Available in four colors on Amazon, with 500 ratings averaging 4.3/5 stars at the moment.

DermMatch Waterproof Hair Loss ConcealerDermMatch Natural Botanical & Mineral Based Hair Loss Concealer

Long-time hair loss forum visitors will be aware that DermMatch has been one of the 3-4 most popular products out there when it comes to hair loss concealers. However, on Amazon, the product has surprisingly fewer reviews than would be expected: over 1,800 reviews averaging 4.0/5 stars as of today. The product is available in eight colors. Each DermMatch disc container lasts for an average of eight months according to the company’s website. Ingredients are all natural and include various emollients and botanicals. The US-based company that makes this product has been in business since 1992. Note that this product is not a fiber, but more like a scalp makeup product.

Boldify Hair Fibers for Thinning HairBoldify Hair Building Fibers

Boldify hair fibers have become extremely popular in recent years. A few years ago, I did not even know this company’s name. The product has thousands of reviews averaging 4.3/5 stars as of 2021. Customers claim that Boldify is easy to use and apply.

Febron Hair FibersFebron Bald Spot Concealer Filler

Febron is yet another newly popular name in hair concealment products. The Febron hair volumizing fibers are considered to be natural and undetectable. The complimenting Febron FiberHold Spray will lock the synthetic fibers in place and not leave any residue. Customer ratings average 4.5/5 stars as of 2021.

Other Scalp Concealer Products

Art Naturals (US) used to sell a unique cotton based hair fiber product in the past. I do not seen it on Amazon or Walmart at present. It was similar to Caboki, with the main ingredient being a type of cotton named Gossypium Herbaceum. On the company’s website, the full list of ingredients used to be listed as: “Gossypium Herbaceum fibre, castor oil hydrogenated, spice berry, ethanol, mineral based colorants (natural iron oxide).”

More recently, a company named SureThik is selling 100% organic keratin protein based natural hair building fibers. SureThik microscopic hair fibers blend and bond electro-statically with existing hair. Another company named Gofybr is offering free samples.

Hair Loss Concealer Colors

Hair loss concealers typically come in the following colors, listed in order of darkest to lightest:

  • Black.
  • Light, medium and dark brown.
  • Red.
  • Grey.
  • Silver.
  • Light, medium and dark blonde.
  • White.
  • Auburn.

For African American hair, note that there is also the Bigen hair dye treatment.

The Best Amino Acids for Hair Growth

For years, I have read that amino acids are good for your hair. In a similar manner to vitamin D, protein, biotin and vitamin B12. Note that proteins (polypeptides) are just a chain of amino acids (peptides) that are linked and bound together.

Hairfinity Hair Vitamins.
Hairfinity hair vitamins with amino acids and biotin.

On Amazon, one of the most popular hair loss products is HairFinity’s vitamin capsules containing amino acids, biotin and numerous other vitamins. It contains an exclusive Capilsana Complex, which  includes: hair strengthening amino acids in hydrolyzed collagen; sulfur-containing MSM; and hair boosting horsetail with silica. Other ingredients include vitamin B3 (niacin), vitamin B5, vitamin A, vitamin C, vitamin D, vitamin B12 and silica. The average rating of this product is currently 4.3/5.

I always assumed the benefits of amino acids to be very limited for hair growth. In my post on Viviscal and Nutrafol, I mentioned how malnourished vitamin and protein deficient people in developing countries often have unbelievable hair. Including Indian ascetics and holy men who are entirely vegetarian and frequently fasting for prolonged periods. I remain skeptical that amino acids and protein can help reverse androgenetic alopecia. Also of note, numerous nutritionally deficient bald men still have tons of robust body hair.

However, a long-time reader from Australia named “Quentin” has made me at least consider that amino acids are good for your hair quality. Perhaps better than protein and biotin. Quentin’s first comment on this blog came in 2016. Almost all of his subsequent 70 or so comments seem consistent and usually helpful to other readers. It is very rare for me to devote most of a blog post to the opinions of one reader.

Amino Acids and Hair Growth

In humans, there exist 21 amino acids of which nine are essential. An essential amino acid cannot be synthesized fast enough by humans, and must therefore come from the diet. Deficiencies can cause dull skin and fragile hair. On Amazon, you can find many essential amino acid supplements for sale.

According to Quentin (via his blog comments and e-mails), there are nine amino acids that benefit hair growth. The first five of these nine (listed below) are the most important. Aminos high in sulphur such as cysteine are the key per Quentin. However, my cursory online research suggests that cystine is more frequently recommended than cysteine.

  1. Cysteine. Many cysteine-rich products are used in the hair and skin care industry. The ingredients is listed as L-cys or L-cysteine.
  2. Methionine (essential). Promotes the development of hair follicles via the Wnt/β-catenin signaling pathway in rabbits.
  3. Lysine (essential). Per one study, the role of l-lysine in hair loss appears to be important and it supports collagen production.
  4. Glycine.
  5. Arginine. One report found an inositol and arginine solution to benefit hair growth. L-arginine also reduces blood pressure and is a precursor for the synthesis of nitric oxide.
  6. Cystine. A 2020 study found L-cystine to benefit metabolic activity, cell viability, and proliferation of keratinocytes. Cystine based product Pantogar is a popular hair growth product.
  7. Tyrosine.
  8. Glutamine.
  9. Proline.
Before Amino Acids
Quentin’s hairline before he took any amino acid pills.

Interestingly, this number  of nine exactly matches a very recent article’s findings. However, Quentin also mentioned many of these amino acids in past comments.

Another recent article recommends seven of the above nine amino acids for hair loss sufferers.

Before Amino Acid Hair
Another view of the hair before any amino acid treatment.

Quentin’s before and after photos show clear improvement in hair growth. He previously also posted some photos showing some reduced hair greying. Make sure to read his comments in the past several blog posts (I have pasted the most relevant ones at the bottom of this post).

Note that some people also use liquid amino acids directly onto their scalps. I am sure that other topical versions in cream and spray forms have also been tried. At best, my guess is that such attempts may have temporary benefits towards hair texture, elasticity and thickness.

Amino Acids and Vitamins

Please note that Quentin is not a doctor, and I cannot vouch for any of his suggestions. If you do contact him or get any products from him, I am also not responsible. I do get a strong sense that he is sincere, honest and knowledgeable. However, some of his claims seem exaggerated. The insightful amino acid section in this report claims as follows:

“Overall, the data regarding the use of amino acids to treat hair loss is limited.”

Having said that, I have never tried taking any amino acid supplements in my life. And earlier in the post, I did post some links to favorable studies in regards to the use of amino acids for hair loss.

Per Quentin, these amino acids are to be ingested at 8 grams per day. He splits them up into 4 grams twice a day. 1000mg of vitamin c (ascorbic acid) is added to this mixture when taken orally, as “this will create the building blocks for protein in the body”. Some of these amino could cause side effects in certain people, so please consult a doctor or dermatologist first. Especially if you already have any underlying medical conditions.

Quentin feels that people with the 5AR gene are deficient in these essential and non-essential amino acids. Per Quentin, “Amino acids high in sulphur are what is the key to regrowing and thickening hair“.

Note that Quentin also uses topical Minoxidil in combination with Retin-A. He stresses the need to use Minoxidil in addition to the earlier mentioned nine amino acids. He uses high-strength Minoxidil 7.5% with retinoic acid (tretinoin) at 0.0125%. He thinks that Minoxidil will help the blood flow to the scalp so that these amino acids become  more effective.

“I was doing a minox/tretinoin mix. However, I now use them separately. I had the compounder make a separate bottle of retinoic acid in a liquid vehicle and minox in another.”

“The key to regrowing your hair is using minoxidil with these 9 key amino acids. I promise this is the key and I am astonished at how well it works.”

Quentin’s After Treatment Photos

After Amino Acids Hair
A collage of Quentin’s hair after his amino acid and vitamin regimen treatment.

According to Quentin, besides the nine amino acids mentioned earlier, the following is also important (I paraphrase at times):

  • A vitamin/mineral mix is crucial to take every day, as the body needs to be healthy and we need energy. Our internal health and organ health also reflects on our skin, nails and hair.
  • A multivitamin containing vitamins B1, B2, B3, B5, B6, B7, B12, C and magnesium will help with energy production.
  • Zinc taken at an amount of 50mg-100mg a day will help with the body’s immune system. Zinc is also important for hair growth.
  • Vitamin C between 1000mg-2000mg.
  • I am inclined to also add arginine and methylsulfonylmethane (MSM) to my shampoo.
  • A 1994 patent related to using methyl sulphonylmethane (MSM) and a sulphydryl group releasing agent for hair growth. Quentin sent me two of the “recipe” related screenshots from there, including one in relation to the use of castor oil.

Other Notes

Some items of interest from Quentin’s recent e-mails and comments are posted below.

“I am about to start studying trichology at the technical and further education college in Australia. I will be offering 10-minute free online consultations over the next month or so. Thereafter, I will be charging (not much) for longer follow-up consultations.”

“After much thought and research I have changed my mind from studying trichology at the technical and further education college in Australia, I have decided to do it under the World trichology society under Dr. David Kingsley.”

“I am going to create a supplement which is much needed in the hair loss community. It will be a mix of 4 main amino acids and 13 others in smaller amounts. Cystine, lysine, methionine, arginine are the main ones, as well as high amounts of choline and vitamin c, b vitamins and minerals. And high zinc as well as biotin at 10000mcg daily. This will have to be taken twice a day and at 8 grams each time.”

“No-one out there is offering this type of nutrient mix for hair loss so I thought I would do it. Not sure how to market it yet, but it works so well for me that I don’t think it should be kept secret. It has taken me 5 years to get the amino acids in the right ratios, about as long as I have been posting here.”

“I am willing to make these in 50 day supplies. I use “n-acettyl l-cysteine.”

“I hope the admin will write a post about this. I was considering making a blend and selling it online, but you can do it yourself.”

“I have been posting here a long time, and tried almost every shampoo and different minoxidil formula available. ”

Minoxidil, Tretinoin and Rhodanide

“It’s 7.5% minox in one bottle. And 0.0125% tretinoin in the other.
Apply the tretinoin first, maybe 10 minutes before minox. Ask to have a very low PG content so it dries fast. You want the tretinoin to be dried before applying minox. Tretinoin (retin a) will also help with cellular turnover. This is just as important as minoxidil and can be used on its own.”

“The usual prescribed amount with formulated minox is 0.025%. I always found that too strong so I use half of that. For minoxidil, I am using a cincotta in nsw (Australia). Only this particular cincotta will do it at this price. It is cheaper for 100ml of 7% minox with tretinoin than it is for 2 bottles of rogaine, so I am very happy.”

“Retinol at a high amount 0.5% is a great way to get your skin ready for retin a. It will turn into retin a within the skin.”

“I was using c pharmacy (Australia), but they are just too expensive. I learnt a lot from them and now I make my own amino/vitamin mix.”

“I don’t know how, but I was going grey. I am pretty sure that it is the amino acids that have changed that, but I look at my hair now and I see one grey hair? It is incredible what some things that are currently on the market and that are legal can do.”

“Has anyone heard of a compound called rhodanide? It was originally used on sheep to thicken their fur and give farmers a bigger yield. Only a few companies use or know of this and have it in their products. From my experience, it slows shedding but also increases hair growth rate excessively.”