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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
$7.50 with a 3M subscription 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

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.*


4.6 of 5 stars
80 Reviews
  • Danielle

    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

    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 16, 2021
  • Cassie

    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 22, 2021
  • Makayla

    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

    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

    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
  • Kaelah

    5 of 5 stars
    My nails used to break and be so thin. I’ve been using this product for about 2 months now and let me tell you, it is great! My nails are strong and shiny again! I love this product!
    Apr 27, 2021
  • Nancy

    5 of 5 stars
    I have been taking this regularly for a little over 2 months. I started taking Killer Nails because of all the reviews for hair growth and I had lost so much hair after having Covid 19 that I needed something. I have all kinds of baby hairs coming in it looks like a halo around my head. My told me the other day that what I was doing for my hair to not stop. Haven't noticed much with my nails yet but loving what it is doing for my hair. Hair brush is no longer full of hair. Thank you.
    Apr 23, 2021
  • Sarah

    5 of 5 stars
    I have a noticeable difference in the strength of my nails and their growth
    Apr 19, 2021
  • Courtney

    5 of 5 stars
    This product is awesome! My nails were so brittle and and constantly breaking... I’ve been taking Killer nails for two weeks and my nails are noticeably stronger and aren’t breaking as easily.
    Apr 10, 2021