Best Hair Color Additives & Fillers of 2025

Lisa Bechard Avatar
Lisa Bechard
Last Updated: Jan 5, 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Hair color additives and fillers are essential tools for achieving the perfect shade and tone for any hair color. These products can help enhance the vibrancy of hair color, add depth and dimension, and restore lost color to damaged hair. Hair color additives are typically used to intensify or alter the shade of hair color, while fillers are used to fill in gaps and smooth out the hair's texture. These products come in a range of formulas, including cream, powder, and liquid, and are available in a variety of colors to match any hair color. When used correctly, hair color additives and fillers can help create the perfect hair color and ensure long-lasting results.

At a Glance: Our Top Picks

One 'n Only One Shot Bond Repair Cover #TOP 1
One 'n Only One Shot Bond Repair
ftb score rating icon 9.8
Cover Your Gray Pro Fill-In Fibers - Medium Brown Cover #TOP 2
Cover Your Gray Pro Fill-In Fibers - Medium Brown
ftb score rating icon 9.7
Cover Your Gray Fill In Powder Cover #TOP 3
Cover Your Gray Fill In Powder
ftb score rating icon 9.5

Top 10 Hair Color Additives & Fillers

#TOP 1

One 'n Only One Shot Bond Repair

I0127821
One 'n Only One Shot Bond Repair Cover
One 'n Only One Shot Bond Repair For Coloring And Lightening Hair

The One 'n Only Bond Repair is an essential treatment for anyone coloring or lightening their hair. It effectively protects and repairs damage during the coloring process, ensuring your hair remains strong until your next service. This additive is perfect for restoring previously broken hair bonds, reinforcing the internal structure of your hair. You'll notice improved color intensity and reduced fading, making your hair look vibrant longer. Plus, it aids in detangling, making it easier to comb through wet or dry hair during coloring, giving you a smoother experience overall.

What We Like
Prevents hair damage
Repairs broken bonds
Enhances color vibrancy
Easy detangling
#TOP 2

Cover Your Gray Pro Fill-In Fibers - Medium Brown

0292IG
Black
Cover Your Gray Pro Fill-In Fibers - Medium Brown Cover
Cover Your Gray Pro Fill-In Fibers with Procapil - Medium Brown

Cover Your Gray Pro Fill-In Fibers is an effective solution for both men and women with thinning hair. The fibers adhere to hair roots to conceal bald spots and instantly thicken hair for a fuller look. The product is easy to apply and contains Procapil, which promotes hair growth and prevents hair loss. The medium brown color is ideal for covering gray hair and roots. Plus, the product comes with a 100% money-back guarantee.

What We Like
Instantly thickens thinning hair
Easy to apply
Contains Procapil for hair growth and prevention of hair loss
Effective for both men and women
Comes with a 100% money-back guarantee
#TOP 3

Cover Your Gray Fill In Powder

SG_B014O68UU2_US
1 Count (Pack of 1)
Cover Your Gray Fill In Powder Cover
Cover Your Gray Fill In Powder - Medium Brown

The Cover Your Gray Fill In Powder in medium brown is an effective concealer that instantly fills-in thinning and balding areas to produce the appearance of thick, full hair. It conceals hair loss, thinning areas, bald spots, and gray roots. With the power of Procapil, it helps promote growth, prevent hair loss, fights follicle aging, and fortifies and rejuvenates hair with each application. The compact comes with a mirror and brush applicator, making it ideal for thinning hair and bald spots. It is rainproof and sweatproof, easily washes out with shampoo, and compatible with all hair colors and types.

What We Like
Instantly fills-in thinning and balding areas
Conceals hair loss, thinning areas, bald spots, and gray roots
Helps promote growth and prevent hair loss
Fights follicle aging and fortifies and rejuvenates hair with each application
Rainproof and sweatproof
#TOP 4

FHI Heat Hair Veil Powder, Red

HV4002
1 Ounce (Pack of 1)
FHI Heat Hair Veil Powder, Red Cover
FHI Brands Hair Veil Powder Hair Filler, Red

The FHI Heat Hair Veil offers a range of benefits for those dealing with thinning hair. Its transfer and fade-proof formula ensures that your hair looks great all day without the worry of smudging. Being water-resistant means you can enjoy activities without fearing that your coverage will wash away. The custom diagonal brush allows for precise application, ensuring that you achieve an even look without any shiny spots or exposed scalp. This product is perfect for hiding scars as well, giving you the confidence of fuller, thicker hair.

What We Like
Transfer and fade-proof
Water resistant
Even application brush
Eliminates shiny spots
#TOP 5

Cover Your Gray Fill-In-Powder - Black

SG_B006KDKDO4_US
Cover Your Gray Fill-In-Powder - Black Cover
Cover Your Gray Fill in Powder - Black

Cover Your Gray Fill-In-Powder is a tinted hair solution for thinning hair or balding spots. It comes in 4 shades and is rain and sweat proof. It includes a compact with a mirror and brush applicator and contains Procapil, a patented natural botanical complex that promotes hair growth and prevents hair loss. It also fortifies and rejuvenates hair with each application. The powder is easy to apply, washes out with shampoo, and is compatible with all hair colors and types without matting or clumping.

What We Like
Easy to apply
Washes out with shampoo
Compatible with all hair types and colors
Fortifies and rejuvenates hair with each application
Rain and sweat proof
#TOP 6

Cover Your Gray Pro Fill-In Fibers - Black

0293IG
Black
Cover Your Gray Pro Fill-In Fibers - Black Cover
Cover Your Gray Pro Fill-In Fibers with Procapil - Black

Cover Your Gray Fibers are designed for both men and women seeking to boost their confidence by effectively covering thinning hair. These innovative fibers stick to your hair roots, instantly masking bald spots and making your hair look thicker. The easy application process allows you to achieve maximum hair volume without hassle. Formulated with Procapil, these fibers not only conceal thinning areas but also promote hair growth and help prevent further hair loss, giving you a fuller look right away.

What We Like
Instantly conceals bald spots
Promotes hair growth
Easy to apply
Suitable for all hair types
#TOP 7

Cover Your Gray Fill-In Powder

SG_B00ELLCK4I_US
Black
Cover Your Gray Fill-In Powder Cover
Cover Your Gray Fill In Powder - Black (Pack of 3)

Get ready to love your hair again with Cover Your Gray Fill-In Powder. This tinted thinning hair solution instantly fills-in thinning and balding areas, giving you the appearance of fuller hair. The powder is rainproof and sweatproof, ensuring that it won't run, streak, or rub off. It washes out only when hair is shampooed normally, providing a convenient and hassle-free solution. Suitable for all hair types, this powder is formulated with Procapil, a patented complex of natural botanicals that promotes hair growth and prevents hair loss. The compact includes a mirror and brush applicator for easy on-the-go use.

What We Like
Instantly fills-in thinning and balding areas
Rainproof and sweatproof
Washes out only when hair is shampooed normally
#TOP 8

Garnier Express Retouch Dark Blonde

603084570331
Dark Blonde
Garnier Express Retouch Dark Blonde Cover
Garnier Hair Color Express retouch gray hair concealer, instant gray coverage, Dark Blonde, 0.68 Fluid Ounce

Garnier Express Retouch is your go-to solution for quick and effective gray hair coverage. Available in four shades, including dark blonde, it allows you to cover your roots instantly, giving you up to 100% gray coverage whenever you need it. The innovative cushion applicator ensures precise application, so you can touch up without the mess often associated with sprays or powders. Plus, with its anti-transfer technology, you can confidently make adjustments on the go. This travel-friendly product is also water-resistant and washes out easily with shampoo, making it perfect for busy lifestyles.

What We Like
Instant gray coverage
Precise cushion applicator
Travel-friendly size
Water-resistant formula
No mess application
#TOP 9

Veinsgrain Hair Touch Up - Ash Brown

Generic
Ash Brown
1 Ounce (Pack of 1)
Veinsgrain Hair Touch Up - Ash Brown Cover
Veinsgrain Hair Color, Veinsgrain Root Coverup, Veinsgrain Hair Powder, Veinsgrain Hair Touch Up, VeinsGrain Root Cover Up, Veinsgrain Hairline Shadow Powder with Mirror for Women (Ash Brown)

The Veinsgrain Hair Touch Up is your go-to solution for quick hair fixes. It eliminates the need for constant touch-ups throughout the day, giving you a flawless look that lasts until your next wash. If you're unsure between two shades, opt for the darker one for root coverage or the lighter one for highlights, ensuring a natural appearance. This hair powder glides on effortlessly, providing undetectable coverage for gray hair without any heavy or fake feeling. Plus, its compact design with a mirror makes it perfect for travel, allowing you to touch up your hair anytime, anywhere.

What We Like
Long-lasting coverage
Natural-looking highlights
Easy application
Compact and travel-friendly
#TOP 10

Cover Your Gray Fill In Powder - Black

Cover Your Gray Fill In Powder - Black Cover
Cover Your Gray Fill In Powder - Black (Pack of 4)

If you’re dealing with thinning hair or bald spots, the Cover Your Gray Powder is here to help you regain your confidence. This innovative solution is made with Procapil, a blend of natural ingredients that not only fills in sparse areas but also supports hair growth and reduces hair loss. Available in four shades, it easily blends into your hair and is resistant to rain and sweat, ensuring it stays in place all day. With a compact that includes a mirror and brush applicator, you can conveniently touch up your look anytime, anywhere.

What We Like
Natural botanical formula
Blends seamlessly
Rain and sweat proof
Compact with mirror and brush
Buying Guide Image

Frequently Asked Questions (FAQs)

1. When should a color filler be used on the hair?

A color filler should be used on the hair when you are coloring more than 3 shades darker than your lightened hair. This helps to ensure that the color turns out even and prevents the hair from looking muddy or dull.

2. What is filling the hair before coloring?

Filling the hair before coloring can be done in a few ways. You can use direct dye or color conditioner to fill the hair. Another method is to apply a tint or oxidate color onto the hair, then comb off and paint a second layer over it. Filling the hair before dyeing it darker with semi or demi-permanent colors is also an option.

3. How long do hair fillers last?

Hair fillers typically last three to four months, depending on the client's lifestyle. Factors such as frequent swimming in chlorine or saltwater can weaken the bonds of the filler and decrease its lifespan.

4. Is hair filler good for hair?

Hair filler has several advantages. It contains natural ingredients that have no negative impact on the hair or scalp and do not contribute to hair loss. Hair filler offers a long-lasting effect and treats thinning hair, providing immediate results of thicker and fuller hair. It is also compatible with dye and does not interfere with its application.

5. Do I need a filler to go from blonde to brown?

Yes, using a filler is an essential step when transitioning from blonde to brown hair. The filler shade helps prevent the hair from turning a muddy or dull color when applying the dark color. It is typically a shade slightly lighter than the desired final shade and may have reddish or golden tones.

6. What happens if you don't fill your hair before dying it?

If you skip the step of filling your hair before dyeing it, the result can be a muddy or even green color. Lightening agents used in the coloring process deplete the warm undertones necessary for darker shades to turn out vibrant and shiny.

7. Do hair fillers damage hair?

Hair fillers are safe to use and have a realistic and therapeutic effect on the hair. They contain natural ingredients that do not have a negative impact on the hair or scalp and are unlikely to contribute to hair loss. Hair fillers provide a long-lasting effect, treat thinning hair, and offer immediate results of thicker and fuller hair.

Editor's Notes

During our hair color additives & filler research, we found 48 hair color additives & filler products and shortlisted 10 quality products. We collected and analyzed 17,966 customer reviews through our big data system to write the hair color additives & fillers list. We found that most customers choose hair color additives & fillers with an average price of $12.67.

The hair color additives & fillers are available for purchase. We have researched hundreds of brands and picked the top brands of hair color additives & fillers, including one 'n only, Cover Your Gray, FHI Heat, Garnier. The seller of top 1 product has received honest feedback from 1,999 consumers with an average rating of 4.9.

Written by
Lisa Bechard Avatar

Lisa Bechard is a skin therapist with 12 years of working experience in the beauty industry and also an experienced beauty writer who has expertise in skincare, medical aesthetics and cosmetic surgery, and wellness. Her writing skills are excellent and all her content is very persuasive and insightful.