How soon will I notice a difference?
Peeling Like an Onion, No Matter What You Put On Them?
- You reach into the drawer for tights, and snap. A fitted-sheet corner catches one and rips it past the pink line.
- At the register you curl your fingers in so only your knuckles show.
- The hardener. The cuticle oil pen. The biotin. The gloves for the dishes.
- And they still peel in layers.
Does this sound like your nails?
Tap the ones that fit.
You didn't do anything wrong.
And you're far from the only one. About 1 in 4 women deal with brittle nails.¹
If your doctor said it's just age, they're right that it's common. Common doesn't mean you have to live with it.
So what's really going on?
Your Hardener Is Working on a Nail That Was Finished 3 Months Ago.
Side view of your fingertip
The part of your nail you can see is finished. It's dead keratin, like hair that's already grown out.
Your nail is made in a factory under your cuticle. What it makes today reaches your fingertip in about 3 months.²
Polish, oil and hardener can only coat the finished nail. That's why the peeling is back three days after you stop.
Until something reaches the factory, every nail that grows out will come in just as thin.
Why it never seems to get better
A fingernail grows about 3 mm a month.² So the nail at your fingertip today was made about 3 months ago.
Anything that changes shows up at the cuticle first, then rides out to the tip. That's why most women give up too early. They check the tip at week 3, while the new nail is still under the cuticle.
Where your new nail is
Today
Starts at the cuticle
Week 6
Halfway out
Week 12
Old nail clipped away
Over 12 weeks →
Same nail, 12 weeks apart.
Illustration of normal nail growth.² Not a Kleos result.
That's why everything you've tried fades
None of it was your fault.None of it ever reached the factory.
So what does?
The Root Refill Feeds the Nail Your Hardener Can't Reach.
Your hardener works from the outside in. It stops at the finished nail.
Kleos Collagen works from the inside, through the blood supply that feeds the nail factory under your cuticle. It's the one route a bottle of polish can never take.
Think of the nail factory under your cuticle:
Biotin alone
A worker with nothing to build with.
Helper only: thin nailKleos Collagen
Collagen + keratin to build with, plus the crew.
Blocks + crew build the new nailSame factory. Same worker. Only one gets building blocks.
Collagen + Keratin
So the factory has something to build with
Five types of collagen (1,000 mg) plus keratin, the protein your nails are made of.*
Biotin + Zinc
So the building blocks get used
Both support normal nails.* On its own, biotin is one worker on an empty lot. Here it has material to work with.
Vitamin C
So your body can make collagen of its own
Your body needs vitamin C to form collagen.* Most nail pills leave it out.
What Kleos Collagen customers mention first:
- Nails that seem stronger
- Nails and hair that grow
- No taste, no smell, nothing to mix
- One bottle instead of separate collagen and biotin
Polish coats the nail you have for a few days. The Root Refill feeds the one that's coming in, every day, so the new nail can grow out instead of wearing off at the next sink.
Three Capsules. The New Nail Grows While You Get On With Your Day.
Not a coat you have to keep reapplying. A daily habit for the nail that's still growing.
3 capsules with breakfast.
No powder to mix, no taste, no smell. That's the whole routine.
The route polish can't take.
Yes, your stomach breaks collagen down into small pieces. That's how it's meant to work. Researchers have found those small collagen pieces in the blood after people take them.⁴
Building blocks and the crew.
Collagen and keratin to build with. Biotin and zinc to support normal nails. Vitamin C so your body can form collagen.*
Check the cuticle, not the tip.
New growth shows up at the base first. Over about 3 months it rides out to your fingertip, and the old, thin nail gets clipped away.
Keep your gloves for the dishes. Kleos Collagen handles the nail that's coming in.
Everything Else Works on the Nail You Already Have
Hardeners and oils stop at the finished nail. Biotin brings one helper and nothing to build with. Here's how the options you've already tried stack up.
The Fix Kleos |
Hardener | Cuticle Oil | Biotin | |
|---|---|---|---|---|
| Reaches the nail coming in | ||||
| Building blocks for nails | Collagen + keratin | |||
| Biotin, zinc + vitamin C | ||||
| Doesn't wear off | ||||
| Nail can still bend | ||||
| No reapplying | 3 capsules | |||
| Guarantee long enough to see it | 90 days | |||
| Harder nails today | Builds in 90 days |
✓Yes–Some do✕No
Already tried collagen?
You probably checked the tip around week 3, while the new nail was still under your cuticle. Or it was a powder you stopped mixing. Kleos Collagen is three capsules with no taste, with keratin, biotin, zinc and vitamin C in the same serving. And the guarantee runs the full 90 days it takes a nail to grow out.
“I actually think it's better than collagen powder.”Verified Buyer
What's Actually In It.
No mystery blend. Every ingredient is listed, so you can check it against what you already take.
Collagen Complex, 1,000 mg
Building blocks for the growing nail*
Five types (I, II, III, V, X) from hydrolyzed bovine collagen, chicken and hydrolyzed egg membrane.

Keratin + Hyaluronic Acid + MSM
The protein nails are made of
Part of our 376 mg blend. Keratin is the protein your nails are made of.

Biotin, 10,000 mcg
Supports normal nails*
Heads up: tell your provider you take biotin before any blood work.

Zinc + Magnesium
Zinc supports normal nails*
50 mg zinc, 150 mg magnesium. Take with a meal, and check against your multivitamin.

Vitamin C, A + E
Your collagen builder*
Vitamin C helps your body form collagen. Vitamins A and E add antioxidant support.

Grape Seed Extract, 150 mg
Antioxidant support
A plant extract rich in antioxidants.

Quercetin + Black Pepper Extract
Antioxidant + absorption support
Quercetin (100 mg) is a plant antioxidant. Black pepper extract supports nutrient absorption.

Contains bovine, chicken and egg. Not vegan or vegetarian. Not for use during pregnancy. If you take other supplements or medication, check with your doctor.
Your First 90 Days
Here's what one full grow-out looks like.†
Tap each stage to open it.
No coats to redo every few days. Nothing changes at the tip yet. That's normal, because the work starts under your cuticle.
This is where most women quit, because the tip still peels. Look at the new nail near your cuticle instead. That's the part you've been feeding.
Tights stop catching. The emery board stays in your purse.
“…it doesn't happen over night I think it was maybe two months when I started to see the difference”Julie, Verified Buyer
The last of the thin, peeling nail reaches your fingertip and gets trimmed off. What's left grew in on the Root Refill. You open the seltzer can yourself. You leave your hands on the table.
Give it one full grow-out. If you don't see a difference in the nail coming in, you get every penny back.
† Based on how nails grow and what customers report. Individual results vary.
Start Your Root Refill.
Pick Your Plan.
$49.95 USD
per bottle · $1.67 a day
$29.97 USD
per bottle · $1.00 a day
$33.30 USD
per bottle · $1.11 a day
