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Available at HUM & Sephora
$10 off your first order
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Killer Nails®

supports longer, stronger nails + hair*

This high-potency vegan biotin supplement supports nail and hair health for length + strength from root to tip

30 vegan capsules · 30 days
Save up to 50% on your first order at checkout

What it does

  • Helps strengthen nails + hair
  • Supports nail thickness
  • Helps reduce nail splitting + breakage

How it works

  • Vegan biotin improves hair and nail strength

How to take

  • Take 1 capsule, daily, with food

25% increase in nail thickness in people with brittle, splitting, or soft nails**

We formulate with clinically proven nutrients and source with great care. Every ingredient is meticulously tested to ensure that all of our supplements are pure, potent and effective.

  • Non-GMO

  • Triple tested for purity

  • Gluten-free

  • No artificial sweeteners or colors

  • Verified by independent labs for potency

What's Inside

  1. Vegan Biotin

    Vegan Biotin

    This B vitamin helps strengthen nails and hair.*

Reviews

4.5
4.5 of 5 stars
84 Reviews
Sort by
  • Jenna

    Age
    25-34
    Used For
    < 1 month
    3 of 5 stars
    Took this vitamin for four months. Had awful breakouts down my back and on my forehead. I stuck with it because my nails were so brittle, they hurt. Four months on, my nails peel and are still ever so brittle and forehead still has massive breakouts. Hair line too. I wanted this to work so bad. It's important to give it an honest try.
    Feb 8, 2022
  • Kaelie

    Age
    25-34
    Used For
    < 1 month
    5 of 5 stars
    I have been taking this vitamin supplement for a month and it has greatly improved my nails and hair! Before I took this, my nails would break and split, now they are strong and do not break at the end. When I showered before, chunks of hair would come out, now it is considerably less. I highly recommend this vitamin supplement to anyone that has breakage at the end of their hair and weak nails!
    Feb 7, 2022
  • Nina

    Age
    55-64
    Used For
    1 month
    5 of 5 stars
    Killer Nails is the bomb!! My nails have never been this strong & healthy. Absolutely obsessed with this amazing product!!
    Dec 22, 2021
  • Tamara

    Age
    55-64
    Used For
    1 month
    5 of 5 stars
    I have been using the one for nails for a while. It has improved my nails and I have no splits or cracks. Love it
    Dec 4, 2021
  • Danielle

    Age
    35-44
    Used For
    1 month
    5 of 5 stars
    Holy cow. Been using these for just under 2mo and I'm in shock. My nails have NEVER been this strong and are growing. I'm a believer! Buy this!
    Oct 6, 2021
  • Nicole

    Age
    35-44
    Used For
    1 month
    5 of 5 stars
    My nails were becoming brittle to the point where it hurt to get filed. Now my nails feel stronger and are lasting longer between manicures.
    Sep 17, 2021
  • Cassie

    Age
    35-44
    Used For
    < 1 month
    5 of 5 stars
    Yeah! It doing what it said it would! My nails were so thin and brittle, they were weirdly shaped and they would break so easily. But not no more! My nails are long and sturdy and back to a good shape! I'ma keep taking these! Also, my memory is shit from my partying days, so I don't even remember to take them every day, prob closer to like 3 times a week and it's still doing the damn thing! so if i did remember to take them every day i bet they'd be even stronger! so yeah! get you some!
    Jul 23, 2021
  • Makayla

    Age
    18-24
    Used For
    2 months
    5 of 5 stars
    Due to glue on fake nails, my natural nails had become warped and full of deep ridges and waves. Not cute. I started taking these every day (small pill, really nice) and I can literally see the line where my nails started over again. No ridges, just a smooth strong nail. They’ve gotten pretty long and I haven’t needed to cut them yet because of how strong they are. I used to have scaly looking weak nail tips over time and that hasn’t come close to happening either. I’m a fan of Killer Nails.
    Jul 6, 2021
  • Jordyn

    Age
    18-24
    Used For
    < 1 month
    5 of 5 stars
    I didn’t have trouble with my nails breaking or being brittle until about 4 months ago. I didn’t try anything to help my nails until a month ago when I tried this! I noticed a difference in about 2 weeks of taking one tablet daily. Definitely recommend for anyone with nails that break easily
    May 12, 2021
  • Savanna

    Age
    18-24
    Used For
    2 months
    5 of 5 stars
    I don't naturally have brittle nails but my new job has me constantly handling rags with chemicals, so I was noticing they were dry and breaking easier. So I decided to get Killer Nails to see if that would do anything and it actually works! My nails are definitely stronger and I notice way less breakage, so now I can grow them to the length that I want. I noticed my hair is looking healthier at the scalp and I feel like it is growing a little faster. Its hard to tell with my hair because its already so long and its only been 2 months but my baby hairs have for sure gotten longer. Try these out, you'll be impressed!
    May 4, 2021

FAQs

  • Can I take Killer Nails® with Hair Sweet Hair™?

    Because of the high amount of biotin in each supplement, we don’t suggest taking them together as it may cause breakouts.

  • Can Killer Nails® also help my hair?

    Yes! Killer Nails® contains biotin which can also support hair health.

  • Is Killer Nails® made in an FDA-approved facility?

    All of our products are made in facilities that are certified to follow GMPs (Good Manufacturing Processes), required by the FDA. This means our manufacturers have specific quality standards to ensure every product has the right identity, purity, strength and composition.
  • Is Killer Nails® vegan?

    Yes, Killer Nails® is vegan and it is certified by Vegan Action.
  • Is Killer Nails® gluten-free?

    Yes! All HUM products are gluten-free and tested to ensure gluten isn’t present at levels greater than 20ppm, which is the regulatory criteria for “gluten-free” set by the FDA.
  • Is Killer Nails® non-GMO?

    Yes! All HUM products are non-GMO.

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