These bestselling hair fibers are my secret to hiding thin spots, and they're down to $19

Many of you know that heart-sinking moment when the bathroom light hits just the right wrong way, and you can see hints of scalp peeking through your freshly styled coif. While you try everything you can to stop the shedding — whether it's with this cult-favorite rosemary oil or a No. 1 bestselling biotin shampoo — I have another secret for filling in areas where my hair has thinned out since turning 40. It's Toppik Hair Building Fibers, which temporarily fill in the bare spots. Skeptical? Don't be — they look so natural!

• Related: This brush is the only one I'll use on my fine, thinning hair

Amazon

Toppik Hair Building Fibers

$19$25

Save $6 | No. 1 bestseller

Create the appearance of thicker locks with a quick sprinkle of this bottle.

Save $6 | No. 1 bestseller

$19 at Amazon

Why is this a good deal? 💰

Hair fibers aren't cheap (it's best to use them sparingly so they last and so they blend better). I like to stock up when they're on sale, but Toppik only goes on sale about once a season. Amazon has knocked 25% off the price now, so snap up a bottle now to avoid waiting around for the spring sale.

Why do I need this? 🤔

Before I figured out how to camouflage my hair loss, the best I could do was wear my strands in a perpetual messy bun on top of my head. When I discovered keratin-based hair fibers, it was a game-changer. I could finally go back to styling my hair the way I wanted to: down to my mid-back with loose waves. And when I'd slick my hair back into a ponytail, I no longer had a glaring bald spot at my hairline. Toppik hair fibers help me fill in my widened part too. Bonus: Toppik — which comes in nine shades including browns, blondes, auburn, black and gray — doubles as a temporary root touch-up, and the fibers are sweat-, rain- and wind-resistant.

If you feel like you're having a bad hair day every day because your strands are too sparse, hair fibers will restore a lush look, and maybe even your confidence. And really, that's what this is all about: When I had my hair back, I had my self-esteem back. I could head out the door without feeling self-conscious.

What reviewers say 💬

Amazon shoppers have made Toppik a No. 1 bestseller and pledged their devotion with 25,000-plus five-star ratings.

Pros 👍

For the most part, shoppers love these hair fibers for a very simple reason: they work. "This product really made a difference in my thinning crown! I have used a powder and brush for four years, but this hair-building fiber matches my color and makes the thinning almost invisible," a fan said.

Another happy customer wrote, "I'm not one to write product reviews but I had to on this stuff because it actually works. I have a full head of hair, basically an afro, but I have one spot in the back that's thinning, and it was starting to make me super self-conscious because it's very visible to the point where my friends and family were pointing out the balding spot. After researching some products like this, this one was the most highly rated so I went for it. It immediately filled in and covered up my thinning spot and it didn't take much at all."

Toppik hair fibers are long-lasting, too, in any kind of weather. Mine stay put until the next time I wash my hair, and they actually look better as the day goes on. One reviewer truly put them to the test: "I use this stuff around my hairline to make it look fuller, it works great. If you are worried about it running, let me tell you, I stood outside in the sun for an hour [during] a wedding in Florida, in the middle of the summer, wearing this stuff. It was HOT. I have never sweated so much in my life. ... I was so worried there was gonna be brown streaks running down my face, but no such thing happened. Amazing!"

Cons 👎

If you have a bad experience with Toppik, odds are you ordered the wrong color, reviewers say. When in doubt, go a shade lighter than you think you need. "This stuff goes on darker than you expect," said one customer.

"It looks exactly like hair! It lasted for several days, without making a mess, until I washed it in," said a fan. But they had this note: "If I rubbed my head, there would be very minor black dust on my fingers, but nothing noticeable if I wasn't looking for it. Applying it can be a bit messy just because it's powdery. So definitely put this on before you do your makeup or wash your face."

Amazon

Toppik Hair Building Fibers

$19$25

Save $6 | No. 1 bestseller

This clever hair helper is made of keratin fibers and is wind-, rain- and sweat-resistant.

Save $6 | No. 1 bestseller

$19 at Amazon

If you have Amazon Prime, you’ll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $35 or more.)

The reviews quoted above reflect the most recent versions at the time of publication.

Looking for more great Amazon style and beauty deals? Check these out:

Style

Beauty and wellness