You've tried whitening strips before. They didn't deliver.
Maybe Crest 3D Whitestrips left your gums burning. Maybe charcoal toothpaste did nothing after weeks. Maybe a kit from TikTok promised overnight results and faded after a week.
The issue isn't your teeth. It's the chemistry being used on them.
Most whitening strips lift stains by destabilizing your enamel.
Hydrogen peroxide whitens by penetrating enamel and oxidizing pigment from inside the tooth. The catch: the same penetration dehydrates the dentin underneath. That's why so many users feel sharp sensitivity hours after use, and why a portion of the result rebounds within weeks.
Peroxide opens the enamel
It permeates through the enamel layer to reach pigment. The same mechanism that whitens is the mechanism that triggers sensitivity.
Dehydration → false brightness
Teeth look whiter partly because they're dried out. As they rehydrate over the next 7-14 days, much of the apparent whitening fades.
Sensitivity → broken protocol
Most users stop after 4-5 days because of nerve sensitivity. The full result requires 14+ consistent days, and most never get there.
PAP+ does the same job. Without breaking your enamel.
Phthalimidoperoxycaproic Acid (PAP+) is a peroxide-free oxidizer that targets pigment molecules directly on the surface of your teeth, without permeating into the dentin layer below.
It's been used in clinical-grade whitening protocols across Europe since 2018, and it remains the most-studied alternative to hydrogen peroxide for at-home strips.
- No tooth dehydration → results that hold
- No nerve permeation → no shooting sensitivity
- Designed for daily use over 21 days, not 4-day sprints
Phthalimidoperoxycaproic acid
Whitening methods, side by side
Comparisons reflect typical at-home over-the-counter formulations. Always read the label of any product you use.
The 28-Day Protocol
One strip. Once a day. For 21 days. That's the entire system. (One box gets you through the first week.)
Stain breakdown
PAP+ begins lifting surface stains from coffee, tea, and pigment buildup. Most users notice a subtle warmth shift in tone.
The compound week
Deeper pigment continues to oxidize. By day 14, most users see a meaningful change vs. their day-one baseline photo.
Lock it in
The final week stabilizes the result. Skip a week, then run a maintenance cycle once a quarter.
★ 7 strips per box · pick your length
Pick your protocol length
1 box = 7 dry-application PAP+ strips = 1 starter week. The full 21-day protocol runs on 3 boxes. No gel slip, no peroxide, no overnight promises.
- Daily use, 30-minute application
- Designed for sensitive teeth
- Stable result that holds with quarterly maintenance
Before you start
Is PAP+ actually as effective as peroxide?
For pigment and surface staining over a 14-21 day window, the published comparative work suggests parity. The trade-off is that PAP+ takes longer per session to deliver the same shade shift. We chose it because the protocol can be sustained daily, which is where most peroxide users drop off.
How long until I see a change?
Most users notice a subtle change around day 7 and a meaningful one around day 14. The full protocol is 21 days, which is 3 boxes of 7 strips each. Anyone promising overnight whitening is selling you peroxide dehydration, not whitening.
Will my teeth be sensitive?
PAP+ is designed to act on pigment without permeating into the dentin layer, which is the source of most peroxide-induced sensitivity. That said, some people have other underlying causes of tooth sensitivity. If that's you, consult your dentist before starting any whitening protocol.
Can I use BLËNK if I have crowns or veneers?
Whitening only affects natural enamel. Crowns, veneers, and fillings won't change shade. If you have visible dental work in front teeth, talk to your dentist about whether whitening adjacent natural teeth makes sense.
What's in the box?
Each box contains 7 individually-wrapped dry-application strips, enough for one week of daily use. The 21-day protocol uses 3 boxes (21 strips total). The 6-box mega pack covers a 6-week deep treatment plus a quarterly maintenance buffer.
We don't promise overnight results.
Anyone who does is selling you the dehydration shortcut. BLËNK is built around 21 days of patient chemistry, the same way clinical whitening actually works.
Start the protocol