How To Use Teeth Whitening Strips: Step By Step

To use PAP+ whitening strips, brush your teeth, rinse with water, dry them and wait a few minutes, then apply the lower strip and then the upper, and leave them on for a minimum of 30 minutes, once a day for 14 days. Do not eat or smoke while they are on (a sip of water is fine), then rinse after removing them.

Because whitening shouldn’t feel like a chemistry experiment

If you’ve ever tried whitening your teeth at home, you’ll know exactly what I mean, the awkward gel trays that don’t fit, the LED lights that look like a UFO in your mouth and those “extra strong” peroxide strips that leave you regretting every sip of coffee you ever had.

When I created Pure Glow teeth whitening, I wanted to make whitening something you could do confidently, not cautiously.
Something that actually worked, didn’t burn, didn’t slip and didn’t taste like nail polish remover.

And that’s exactly what our PAP+ teeth whitening strips do.
They’re enamel-safe, non-peroxide, dentist-approved, and when you know how to use them properly, they're teeth whitening strips that give you a brighter smile without the sting, and you can shop Pure Glow strips in either pack size. If you’re completely new to whitening, our beginner’s guide on how to whiten your teeth at home covers what is legal in the UK and how to pick a method.

Let’s get into it 👇

Step 1: Prep your teeth (the step that is easiest to skip)

Before you pop on your teeth whitening strips, it’s important to start with a clean surface.
There is no need to brush half an hour beforehand. A short routine just before you apply is all it takes.

Here’s the golden rule:
Brush your teeth, rinse with water, dry your teeth, wait a few minutes, then apply the strip.

Brushing removes surface plaque, rinsing clears away toothpaste residue that could get between the strip and your enamel, and the few minutes’ pause gives your mouth time to settle so the PAP formula gets full contact with your teeth.
If you’re using PAP+ teeth whitening strips with hydroxyapatite like Pure Glow’s, you’ll also give the hydroxyapatite a cleaner surface to settle onto.

Pro tip: avoid using whitening toothpaste right before your strips. Let the PAP formula do its job without competition.

Step 2: Dry your teeth (the move that makes the difference)

This step sounds silly, but it makes all the difference.
Gently dry your teeth with a towel before applying the strip. For the brushing order, and what you can eat once the strips come off, see our guide to brushing before or after whitening strips.

Why? Because it gives the strip a clean, dry surface to start on.
When you apply whitening strips for sensitive teeth, especially Pure Glow’s thin no-slip design, they grip even when your teeth are wet.
Sliding is a problem with wet-fit, gel-coated strips, and drying the teeth is the usual workaround for those. Our no-slip grip keeps the formula in place and ensures even whitening across every tooth. If you are still deciding which strips to buy, that grip is one thing worth looking for.

Think of it as prepping your canvas before painting, smooth, dry, and ready for perfection.

Step 3: Apply your strips with precision (and confidence)

Now for the fun part.

1️⃣ Peel one strip from the backing film.
2️⃣ Line it up carefully with your gum line.
3️⃣ Press gently to mould it against each tooth, especially the edges.

You’ll feel the strip start to grip, and that’s our PAP+ whitening formula getting to work.
It’s teeth whitening for sensitive teeth, so you’ll notice there’s no sting, no sensitivity, no “chemical burn” feeling.
Just a refreshing mint flavour and that satisfying stay-in-place hold.

Step 4: Chill for at least 30 minutes (literally)

This is your glow time.

Keep the strips on for a minimum of 30 minutes while you scroll, work, or prepare dinner.
They’re comfortable, discreet and don’t foam up or flap around like older peroxide formulas.

Here’s what’s happening during that time:

• The PAP (Phthalimidoperoxycaproic Acid) starts breaking down stains through gentle oxidation.
• Hydroxyapatite gets to work supporting and smoothing the enamel surface.
• Your teeth whiten safely, evenly and sensitivity-free.

This process is what makes Pure Glow strips a true enamel safe teeth whitening treatment, effective but kind.

If you’re using them daily, this time compounds beautifully. By day 14 the strips are designed to take you up to six shades whiter, depending on where you start, with zero sensitivity. Our guide to reading a tooth shade chart explains how a shade is counted and how to find the point you are measuring from.

Step 5: Remove, rinse and feel that glassy finish

After at least 30 minutes, peel off both strips and rinse your mouth with water.
You’ll immediately feel a smoother surface on your teeth, that’s the hydroxyapatite settling onto the enamel surface.
No grit, no residue, no weird film. Just a clean, fresh feeling.

When you see the first change varies from person to person.
Some people look in the mirror after their very first strip and think, “Wait, they’re already whiter?” For others it takes two or three uses before the stain visibly starts to lift.
Either is completely normal with Pure Glow teeth whitening.

Step 6: Stick with it, consistency is where the magic happens

Let’s be real: whitening isn’t a one-time thing.
Coffee, tea, red wine and everyday life keep staining your teeth, so consistency is key.

For best results:

• Use one strip daily for 14 days (that’s why a single box of 28 strips is perfectly designed for your first treatment).
• Once you’re happy with your shade, keep it topped up with 2 to 3 strips a week. A subscription every 4, 6, 8 or 10 weeks is set up for exactly that. The full schedule, from the 14-day course to top-ups, is in our guide on how often to use whitening strips.
• If you’re planning ahead for an event, use them daily the week before for that camera ready shine.

If you’re a regular tea or coffee drinker, your 56 Strip Bundle Saver is ideal for teeth whitening at home all year round.

Remember, Pure Glow strips are enamel safe, and the hydroxyapatite in the formula helps to replenish the enamel surface while you whiten.

Step 7: Keep your results longer (avoid these common mistakes)

Here’s what to avoid if you want your results to last:
🚫 Smoking, it’s enamel’s worst enemy.
🚫 Coffee or red wine straight after a strip, so leave staining food and drink for about an hour.
🚫 Harsh charcoal or abrasive whitening toothpastes, which work by scrubbing rather than by lifting the stain itself. We have looked at what whitening powder actually does in more detail.

Instead, go gentle. Use a mild, non-abrasive toothpaste and let your enamel stay smooth and glossy.
That’s how you keep your results glowing for months, not weeks, and it is most of what decides how long teeth whitening lasts. For more on keeping your results looking their best long after your 14-day course, see our full guide on how to maintain white teeth after whitening.

The science behind the shine

So what’s actually happening when you whiten with PAP? Here’s the simple version, and for the full breakdown read our guide on what PAP teeth whitening is.

• Traditional peroxide strips release free radicals, which is the usual explanation given for the sensitivity some people get from them.
• PAP releases oxygen that lifts surface stains and works on the coloured compounds inside the tooth, by a gentler route than peroxide takes.
• Hydroxyapatite then supports the enamel surface, leaving it smoother and shinier.

That’s what we mean when we say peroxide free teeth whitening: the shade change, by a gentler route. We put the two chemistries side by side in PAP vs peroxide teeth whitening.

The result is brighter, smoother teeth.

Why Pure Glow is built on a PAP+ formula

Pure Glow is built around a simple promise: confidence starts with trust.
That’s why we went all-in on PAP+ with hydroxyapatite, a formula that doesn’t just work, it cares for your teeth at the same time.

✅ Clinically tested: Up to six shades whiter in 14 days
✅ Zero sensitivity: Whitening without pain or irritation
✅ Enamel-safe
✅ Fresh mint flavour: no chemical aftertaste

It’s the kind of whitening you’ll actually look forward to using because it fits your life, not the other way around.

Final thoughts: whitening made simple

Whitening shouldn’t hurt. It shouldn’t be complicated. And it definitely shouldn’t make you nervous.
With the right method and the right formula, it can be one of the easiest self-care rituals in your day.

Frequently asked questions

How long do you leave whitening strips on?
A minimum of 30 minutes. Apply them to clean, dry teeth, lower strip first and then the upper, and do not eat while they are on, though a sip of water is fine.

Should I brush my teeth before or after whitening strips?
Before. Brush, rinse with water, dry your teeth and wait a few minutes, then apply the strips. Our strips grip even on wet teeth, but drying first is still part of the routine. After you take them off, avoid staining drinks and foods for about an hour.

How often should I use Pure Glow strips?
Once a day for 14 days. Using more than one treatment a day will not necessarily speed things up and may increase the chance of gum irritation. Once you are happy with your shade, 2 to 3 strips a week keeps it topped up.

Is it PAP or POP whitening strips?
PAP. It stands for phthalimidoperoxycaproic acid, the peroxide-free whitening ingredient. "POP" is a common mishearing of the same thing, so if you were looking for how to use POP whitening strips, the steps above are the ones to follow.

When will I see results?
It is different for everyone. Some people notice a difference straight away, others after two or three uses, with the full result building through to day 14.