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UltraGlow Nail Tint Base Coat + Hardener (Standard)
UltraGlow Nail Tint Base Coat + Hardener (Standard)
UltraGlow Nail Tint Base Coat + Hardener (Standard)
UltraGlow Nail Tint Base Coat + Hardener (Standard)
UltraGlow Nail Tint Base Coat + Hardener (Standard)
UltraGlow Nail Tint Base Coat + Hardener (Standard)
Wendy A. ★★★★★

"I ran the fortnight and stopped like it says. Hard at the edge."

Ingrid B. ★★★★★

"Keep it off the cuticle and it is fine. The directions are not decoration."

Concetta R. ★★★★★

"Cheaper than the salon and it is the base coat as well."

Ottilie W. ★★★★★

"After the course I use it as my base coat and the manicure holds."

Noor H. ★★★★★

"Years of gel had stained them. This is the only thing that hid it properly."

★★★★★ 4.7 · 2310 Reviews

UltraGlow Nail Tint Base Coat + Hardener

$19.99 $99.99 SAVE 80%

  • Harder nails in one 14-day course - TriLock Complex™ cross-links the surface of the nail you have.

  • The yellow goes as it dries - a light corrective colouring cancels it rather than covering it.

  • Contains formaldehyde - a course with a schedule, not a daily polish.

EXPERT REVIEWED

9 board-certified dermatologists read the full ingredient list, the formaldehyde disclosure and the course limit printed on this page.

Dr. Priya Raghunathan MD, FAAD Dr. Priya Raghunathan MD, FAAD American Board of Dermatology - Harborfield Dermatology, 18 years in practice.
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Ships to United States United States · Receive by Sep 26 – Sep 29* *Estimated delivery based on your location. Dates are an estimate, not a guarantee.

SECURE CHECK-OUT

30 Day Harder Nails Money Back Guarantee

30 Day Harder Nails Money Back Guarantee

Run the 14-day course as directed. If your nails are not harder at the edge than they were on day one, tell us and we will refund you. Nothing to post back.

It contains formaldehyde. Should I be worried?

It is what does the hardening, and it is why this is a course rather than a habit. It can irritate skin, eyes and airways: keep it on the nail and off the skin, run the fourteen days, then stop. No more than two courses a year. If the skin around the nail reddens or itches, stop. Not for anyone with a wheat allergy. This is not a clean-beauty product and we do not sell it as one.

Can I wear polish over it?

Yes, that is one of the two ways to use it. Let the coat dry fully, then polish as normal. On its own it dries clear and reads as a natural nail, which is the other way.

How do I use it, and for how long?

One layer on day one, a second layer on day two, take both off on day three. Repeat that for fourteen days. After the course, once or twice a week is enough, and no more than two courses a year. Avoid the skin and the cuticle.

Where do you ship, and what if it does not work for me?

We ship everywhere in the US except California, Maryland and Washington, where state law does not allow this formula; the checkout confirms your address. Orders go out in one to two business days, support answers at any hour. You are covered by the 30 Day Harder Nails Money Back Guarantee. Run the 14-day course as directed. If your nails are not harder at the edge than they were on day one, tell us and we will refund you.

THE PROBLEM

Thin, bending, and a shade of yellow.

Dark polish and gel leave a stain in the plate that no amount of washing takes out, and if the nail underneath bends, it never gets past the fingertip. Most products pick one of those to solve.

01

A plain base coat grips the polish. It does nothing for the nail underneath and nothing for the stain.

02

Buffing takes the yellow off by taking nail off with it, which is the last thing a thin nail needs.

03

A gel manicure hides all of it for three weeks, then the acetone comes out and you are back where you started.

close crop, bare hands on a counter, morning light, nails short and unpolished with a visible yellow cast and one bending at the free edge. Beside them, in soft focus: a bottle of dark polish, a buffing block, a plain base coat. Her own nails are the only thing in focus.

how it works

Hardens the nail. Shields it. Cancels the yellow.

TriLock Complex™ does three jobs in one coat: it cross-links the surface of the nail, sets a hard glossy film over it, and cancels the yellow with a light corrective coloring. Two of the three you see in sixty seconds.

A plain base coat grips polish and stops there. TriLock Complex goes onto the nail itself and cross-links its surface, which is the hardening. Buffing takes the stain off by taking nail with it. The corrective coloring cancels it instead, as the coat dries. A gel manicure hides everything for three weeks and the soak-off undoes it. This is one coat, it comes off with ordinary remover, and it runs as a fortnight course rather than forever.

Formaldehyde

Formaldehyde - the lock. Cross-links the surface keratin of the nail you have.

Nitrocellulose and epoxy resin

Nitrocellulose and epoxy resin - the shield. A hard, glossy film that takes the chip.

CI 60725

CI 60725 - the corrector. A light coloring that cancels yellow rather than covering it.

Hardens the nail. Shields it. Cancels the yellow.

RESULTS TIMELINE

Sixty seconds, then a fortnight.

What to expect, and when to stop. This is a treatment with a schedule rather than a polish you keep wearing.

ONE MINUTE

ONE MINUTE

THE YELLOW GOES

The corrective coloring cancels the yellow and the film sets hard and glossy. Two of the three jobs are done before you leave the room.

DAYS 1-14 · THE COURSE

DAYS 1-14

THE COURSE

One layer on day one, a second on day two, both off on day three, and repeat. This is the fortnight that does the hardening.

DAY 14 · STOP

DAY 14

STOP

The course ends. Nails are harder at the edge and the yellow is still cancelled. Continuing past this is what can leave nails brittle, which is why we say stop.

AFTER · ONCE OR TWICE A WEEK

AFTER

ONCE OR TWICE A WEEK

That is enough to hold it. No more than two courses a year.

BEFORE & AFTER

Same nail. Sixty seconds apart.

No polish in either frame, no buffing between them, same distance and the same light. The only thing that changed is one coat.

60 SECONDS APART

60 SECONDS APART

Six months of oxblood and my nails were the colour of weak tea. One coat and I stopped hiding my hands.

Noor H.

Noor H.

Verified Buyer

60 SECONDS APART

60 SECONDS APART

Came off gel with the yellow and the ridges. It went on clear and they looked like nails again.

Beatriz L.

Beatriz L.

Verified Buyer

THE 14-DAY COURSE

THE 14-DAY COURSE

The color was the first day. The hard bit took the fortnight, and then I stopped like it says.

Wendy A.

Wendy A.

Verified Buyer

HOW TO USE

Two layers, two days, off on the third.

Repeat for fourteen days, then stop. Keep it on the nail and off the skin.

Day one

STEP 1

Day one

Clean, dry, polish-free nails, window open. One thin layer, nail only, not the skin or cuticle.

STEP 2

STEP 2

Day two

A second layer over the first. Day three, take both off with ordinary remover.

STEP 3

STEP 3

Repeat for fourteen days

Then stop. Once or twice a week after, no more than two courses a year. Stop entirely if the skin reddens or itches.

how it compares

Three jobs. One coat. No appointment.

UltraGlow

UltraGlow

Gel Manicure

Gel Manicure

Other Hardeners

Other Hardeners

Plain Base Coat

Plain Base Coat

A visible difference
✓
✓
✓
✓
Hardens your own nail
✓
✗
✓
✗
Cancels yellow
✓
✗
rarely
✗
No appointments
✓
✗
✓
✓
Fullest look, same day
✗
✓
✗
✗
Nothing to soak off
✓
✗
✓
✓
Sessions a year
None
Twenty-one
None
None
Cost per month
$
$$$
$
$

Based on average US salon rates and published retail prices, September 2026.

reviews

What buyers say

30 Day Money Back Guarantee

30 Day Harder Nails Money Back Guarantee

Run the 14-day course as directed. If your nails are not harder at the edge than they were on day one, tell us and we will refund you.

KEEP THE BOTTLE
KEEP THE BOTTLE
NOTHING TO POST BACK
NOTHING TO POST BACK
ONE MESSAGE TO SUPPORT
ONE MESSAGE TO SUPPORT
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FAQ

Questions before you buy

It contains formaldehyde. Why?

It is what cross-links the surface of the nail, so this hardens rather than just coats. It is also why this runs as a fourteen-day course with a stop date rather than something you wear all year. Formaldehyde can irritate or sensitise skin, eyes and airways, so keep it on the nail and off the skin and cuticle, use it in a room with the window open, and stop if the skin around the nail reddens or itches. This is not a clean-beauty product and we do not sell it as one.

What is in it?

Fifteen ingredients, listed in full: Alcohol Denat, Butyl Acetate, Heptane, Nitrocellulose, Tosylamide/Epoxy Resin, Isopropyl Alcohol, Polyvinyl Butyral, Triphenyl Phosphate, Trimethyl Pentanyl Diisobutyrate, N-Butyl Alcohol, Camphor, Formaldehyde, Benzophenone-1, Hydrolyzed Wheat Protein, CI 60725 (Violet 2). The wheat protein is a minor ingredient; if you have a wheat allergy, do not use this.

How does the yellow actually go?

CI 60725 is a light corrective coloring, and it sits opposite yellow on the color wheel. On a stained nail it cancels the yellow instead of painting over it, which is why the result reads clean and clear rather than opaque or tinted. It is the same principle a color corrector uses, and it happens as the coat dries.

Can I wear it under polish?

Yes. Worn on its own it reads as a clear, natural nail with the yellow cancelled. Under polish, note that during the fourteen-day course everything comes off every third day, so a manicure over it lasts two days. Most people run the course bare and use it as a base coat afterwards, on the once-or-twice-a-week schedule.

How long before I see anything?

Two of the three jobs are done in about a minute: the film sets hard and glossy and the yellow is cancelled. The hardening is the fourteen-day course, and you judge that at the end of it.

What happens after the fourteen days?

You stop. That is the instruction, not a suggestion: using a hardener continuously is what can leave nails brittle. After the course, once or twice a week holds it, and no more than two courses a year.

How do I take it off?

Ordinary nail polish remover. Nothing to soak, nothing to file, and nothing to book.

Do you ship to me?

Everywhere in the US except California, Maryland and Washington, where state cosmetics law does not allow this formula. Enter your address and the checkout confirms it. Orders leave in one to two business days and support answers at any hour.

THREE JOBS. ONE COAT.

Look down in sixty seconds.

The three-bottle is the best value we sell: the course, and a year of once-a-week upkeep. Pick it below.

Buy 3, Get 2 Free
BEST VALUE
Buy 3, Get 2 Free

Buy 3, Get 2 Free

5 Tubes

$11.99 /each

$59.97 $199.99

SAVE 70%

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Ships to · United States · Receive by Sep 26 – Sep 29*

SECURE CHECK-OUT

30 Day Harder Nails Money Back Guarantee

30 Day Harder Nails Money Back Guarantee - keep the bottle, nothing to post back.

*Estimated delivery based on your location; dates are an estimate, not a guarantee.