Reviewers Are Seeing 'Insane' Hair Growth From This Viral Serum, So We Asked A Derm How It Works

The experts consulted for this story do not necessarily endorse the products ahead unless otherwise noted.

It’s normal to have a healthy dose of skepticism around products from celebrity-founded brands, but the internet appears to be loving one entry into the celeb beauty category: the Hair & Edge Restoring Drops from Beyoncé’s brand Cécred, which reviewers are referring to as “heaven in a bottle” and “magic” for thinning hair.

Suitable for all hair types and textures, the serum is said to improve hair density up to 1.5 times, giving you fuller, healthier-looking hair. Often seen selling out (the official Cécred site limits customers to purchasing five bottles at a time), the drops have gained a cult following, with impressed reviews and before-and-after photos and videos of their hair growth popping up on X (formerly Twitter) and TikTok.

“I’m so glad I read the reviews and tried these drops,” one reviewer wrote at Ulta. “I can already tell a difference after 21 days. If you’re on the fence, give them a try.”

But how does these drops actually work, and are they as good as the reviewer testimonials make them seem? To get to the bottom of this, I asked an expert.

Dr. Dina Strachan, a board-certified dermatologist at Aglow Dermatology in New York City, broke down some of the main ingredients in the drops, namely the key peptide ingredients that the brand claims can help visibly improve hair density.

“Peptides are protein fragments or short chains of amino acids,” Strachan said. While she doesn’t have personal experience with the Cécred drops, she was able to tell from the ingredient list that “there are active ingredients that could theoretically contribute to hair growth and prevention of hair loss,” depending on the formulation.

Strachan explained that each of the five included peptides has a purpose, from one that’s “known to help anchor hair into the scalp and grow for longer” (acetyl tetrapeptide-3), to one that “improve[s] hair follicles structure, also anchors hair into the skin, and inhibits products of DHT, a hormone that can cause hair shedding” (biotinoyl tripeptide-1). Two additional peptides on the ingredient list can help keep hair in the growth phase for longer periods of time, she said, and there’s another that can increase blood flow to the hair to stimulate growth.

These peptides are in addition to bioactive keratin ferment, which Strachan said “uses fermentation to breakdown proteins into smaller molecules that can penetrate and boost the hair shaft and stop it from breaking.”

So even the skeptics may have reason to believe that this stuff works. “The ingredients are thought to contribute to hair loss prevention and growth,” Strachan surmised. “Depending on the formulation the product could be helpful particularly for breakage.”

Still, she cautioned against seeing any hair loss products as a be-all, end-all cure, particularly if you haven’t consulted a doctor to get a diagnosis before trying it out. “Hair loss is a lucrative industry which is largely unregulated so there are a lot of false claims,” she said — so maybe take those claims that these drops are “magic” with a grain of salt. “There are many types of hair loss so it makes sense that there would be diverse experiences with a hair loss product as there is no one size fits all solution.”

So, are the “heaven in a bottle” claims true? Probably not, but the Cécred drops do get the job done for plenty of reviewers, thanks to their key ingredients. They’re designed for daily use and don’t promise instant results, but for many, sticking with it appears to have helped.

“I’ve had a lot of thinning all around my scalp, including my edges due to alopecia areata,” one reviewer wrote. “I noticed a HUGE difference in my locs after 6 weeks. Hair is much fuller and healthier looking. I’m on my second bottle.” Another said, “Within two weeks of using this product my hair was stronger with little to no shedding. After one month I have new growth in my problem areas where it wouldn’t grow for years. I have never used a product that works this fast.” I recommend looking on Ulta and Cécred to see the before-and-after photo reviews for yourself, too, to see the drops’ visible results for some shoppers.

So, while you should consult a professional first to understand your personal hair concerns, these drops could be helpful in addressing breakage or thinning hair. Below, check out some of the rave reviews for this viral product, from reviewers who have put it to the test.

“I was diagnosed with an auto immune disease a couple years ago. The first med we tried had so many terrible side effects. One of those was my hair falling out. It fell from my scalp, it fell from breakage. Clumps of hair and loads of dandruff. I stopped that med but the damage was done my hair was dull and brittle. This was new territory for me as my hair has always been one of my favorite features. It slowly began to heal and on a whim I tried the restoring drops and hair oil. I thought I was hallucinating. After a few weeks my hair was shinier and was actually feeling thicker. I used the drops after i washed my hair (every few days) and the hair oil mid to ends when i braid my hair at bed time. It looks longer. I didnt believe it until people, who didnt know I was using something new, began to comment on my hair. Im getting my hair back. I know people will read this and roll their eyes and say “its just hair”. Ok to you it is. And thats fine. But to me its more and I never thought I would see my hair again. Thanking Beyonce wasnt on my 2025 bingo card but it’s definitely on my 2026 card.” — Not balding anymore

“This product is magical! My stylist noticed new sprouts of hair after a couple months of use.” – Tia

“Was skeptical at first because of all the “hype”. But this works. Its been about 2-3 weeks and I can tell the difference. Its pricey as heck. But you can waste money on cheaper items and not see any difference after spending just as much.” — Chinicca

“I was skeptical of this product and how well everyone was saying it worked…and lets just say I’ve gladly been proven wrong. I’ve only used this product for two weeks and the amount of baby hair growth is INSANE. I will be continuing to buy this every month. I have fine hair that used to be incredibly thick and after having covid twice I’ve lost a decent amount of that thickness. The amount of new hair growth in only two weeks is so promising. I 10/10 recommend this product.” — Nikki Bailey

“I’ve been using the Cécred Restoring Hair & Edge Drops for about 6 weeks now and the biggest win is the texture. Most edge treatments are heavy oils that breakout my skin or ruin my silk press, but this is water-based and absorbs almost instantly. What I noticed: My hairline feels significantly ‘sturdier.’ I have some thinning from high-tension braids, and I’m starting to see those little baby hair sprouts filling back in.” — Pound_Cake

“Overall great product! I wish there was a larger size bottle to last me a while— I was applying to my hair daily. My hair was damaged severly from being over processed by a chemical relaxer. These drops helped restore the thickness to my damage spots in just 3 months!!!” — Kie C

To get the most hair growth bang for your buck, add one of the best shampoos for hair loss to your routine: