MySweetSmile Precision Whitening Pen — Full Review
The MySweetSmile whitening pen is a peroxide-free, portable pen designed for targeting specific teeth and topping up between treatments — and it's our top pen pick. It comes from a brand with a strong current track record: a 4.5/5 "Excellent" Trustpilot rating, over a million customers, and IndyBest recognition from The Independent in 2023 and 2024. At £19.99 it's an affordable way to maintain your results on the go. Here's our honest review.
Key facts
● Peroxide-free formula
● Twist applicator with a fine brush tip for precise application
● Apply a thin layer, leave around 10 minutes, then rinse
● Portable designed for top-ups and hard-to-reach teeth
● Price: £19.99 (was £24.99)
Why we rate the MySweetSmile whitening pen:
The pen is our top pick for top-ups and precision. Its fine brush tip lets you apply the formula exactly where you want it — useful for crooked, crowded or hard-to-reach teeth that a tray or strip can't easily cover. It uses the same peroxide-free approach as the rest of the MySweetSmile range, so it pairs naturally with the powder or strips for maintaining results between fuller treatments. And it comes from a brand with a strong, current review record: a live 4.5/5 "Excellent" Trustpilot rating.
How you use it
Twist the base of the pen until the gel appears on the brush tip, then paint a thin layer onto the teeth you want to target. Leave it for around ten minutes, then rinse. It's designed for quick, precise application — ideal for topping up between strip or powder treatments, or for reaching teeth that are harder to cover evenly. Follow the instructions supplied with the pen for timing and frequency.
Honest pros and cons
Pros: peroxide-free; affordable; portable and convenient; the fine tip is good for precision and hard-to-reach teeth; pairs well with the powder or strips.
Cons: a pen is best as a top-up or maintenance tool rather than a standalone whitening course, most people use it alongside another product; coverage is less complete than strips or a tray; and results and comfort vary from person to person.
Check with your dentist first if you have dental work.
Who it's for
A good fit if you already whiten and want something portable to maintain results, or you want to target specific teeth — particularly crooked, crowded or hard-to-reach ones. Less suited to anyone looking for a single complete whitening solution on its own; the strips, powder or bundle suit that better. Always follow the supplied instructions.
How to choose a whitening pen:
When choosing a whitening pen, look at whether the formula is peroxide or peroxide-free, how easy the applicator is to control, and how portable it is for top-ups. A pen tends to work best as a maintenance tool alongside a fuller treatment, so it's worth thinking about what you'll pair it with as much as the pen itself.
FAQ
Is it peroxide-free? Yes — it's part of MySweetSmile's peroxide-free range.
What's it best for? Top-ups, maintenance, and targeting specific or hard-to-reach teeth between fuller treatments.
Can I use it with the powder or strips? Yes — it's designed to complement them.
How much is it? £19.99 (reduced from £24.99).
The verdict
As an affordable, portable, peroxide-free top-up tool, the MySweetSmile whitening pen is our top pen pick, most useful alongside the powder or strips rather than on its own. The fine tip makes it genuinely handy for precision and hard-to-reach teeth. A neat, low-cost addition to a whitening routine.
For most people it's a simple, low-cost way to keep a whitening routine topped up between fuller treatments.