Colgate Whitening Pen: Will It Actually Make Your Teeth Whiter?

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The Colgate Whitening Pen is one of the most convenient whitening solutions available. This 5* rated product comes handily stored inside the Colgate Optic White Toothbrush, meaning that you never have to worry about losing your whitening pen again (view on Amazon).

It is no secret that whiter teeth can have huge benefits. Not only do they boost youthfulness, but they can also improve confidence. And, of course, the result is a great looking smile. All of this has brought teeth whitening into the spotlight in recent years, with it becoming the most sought-after cosmetic procedure in the US.

Since professional whitening treatments are costly, home kits have risen in popularity. However, few safety measures exist to ensure that the kit you are using is both safe and effective. Therefore, without proper research, you could purchase a kit that does very little except damage your teeth.

However, this isn’t a reason to worry, as we have summarized the evidence surrounding the Colgate Whitening Pen in this review.

A Brief Overview Of The Colgate Whitening Pen

Before we delve into the details of the Colgate whitening pen, here are a few things that you should be aware of. Colgate does not sell this whitening pen as a solo product. Instead, it’s sold as a part of a whitening toothbrush kit, which includes a toothbrush designed for special cleaning, and the whitening pen, which slots into the end of the toothbrush for safekeeping. The only Colgate solo whitening product is the Colgate Optic White Overnight Teeth Whitening Pen.

Colgate Optic White Overnight Teeth Whitening Pen, Teeth Stain Remover to Whiten Teeth, 35 Nightly...
  • 1 Pack of Colgate Optic White Teeth Whitening Pen
  • OVERNIGHT WHITENING PEN: The Optic White teeth whitener pen features a precision brush to target the surface...
  • EASY TO APPLY: To use, follow your regular oral care routine, dry your teeth, click the whitening pen, apply a...

Pros and Cons


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  • Unique gel formula allows for deep whitening
  • Quick and convenient
  • Starts working in just 1 day
  • Use of same whitening agent (hydrogen peroxide) recommended by dentists
  • Easily portable


  • Can be messy

The Colgate whitening pen is quick and convenient, and does not involve setting aside time in your day to treat your teeth, as it is used after your usual dental cleaning regime. Unlike many home whitening kits, which often take at least a few days to produce results, you can begin to see noticeable changes after just one day of proper use. However, the pen design means that it can be messy if you do not have a steady hand, or find it difficult to fill in your teeth.

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5 Things You Need To Know About The Colgate Whitening Pen

1. Does the Colgate whitening pen work?

With good reviews on Amazon, it is undisputed that the Colgate whitening pen is effective. This is because the unique formula of the whitening gel allows it to stick to the teeth, and therefore to go past the surface stains and whiten deeper than many other kits. As well as this, the combination of a specially designed toothbrush with bristles that both polish and remove surface stains alongside a whitening gel should whiten your teeth by at least 5 shades (view details).

2. Is it safe?

The active ingredient in this whitening pen is hydrogen peroxide. This is a common ingredient in whitening kits, and most over-the-counter whitening products will contain this. Numerous studies have supported the safety of peroxide in whitening products, with occasional side effects of tooth sensitivity. However, peroxide has been shown to be safe on enamel and many professionals use it for whitening treatments.

3. How soon can you expect results?

If you use it properly, you can begin to see results from the Colgate whitening pen after just 1-2 days of use. On top of this, you should see the full effects of the kit (5 shades whiter) after 3 weeks of appropriate use. However, this is dependent on correct usage of the kit – you should use the toothbrush and gel twice a day.

How to use the Colgate whitening pen

  1. Brush your teeth prior to using the pen. As per the ADA’s recommendation, you should do this twice a day for two minutes at a time.
  2. Apply the gel to your teeth. Turn the knob and use the pen to apply, making sure that you cover your teeth evenly. You should use two clicks of gel for the top teeth, and two clicks for the bottom teeth.
  3. Go! Leave the gel on your teeth. You should not rinse your mouth.
  4. Store the pen in the end of the toothbrush for safe keeping. You should always wipe the tip of the pen clean before returning it to the brush, but never with water.

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Always use the pen after brushing your teeth. If you use it at the beginning of your dental regime, you will find that your brushing cleans the gel off the teeth.

4. How long will results last?

How long your whitening results last is entirely dependent on your lifestyle. Colgate recommends that after the initial full treatment, you use the whitening pen as and when it is needed, as results will vary from person to person. Regular smoking or consumption of staining foods, like berries or dark colored sodas, will mean that you may find yourself using the pen more often.

5. Is there something better?

If you are looking for a quick and convenient method of teeth whitening, then the Colgate whitening pen might be the product for you. It takes little effort, and toothbrush the storage design means that it is always to hand, you could also try the overnight treatment using the Colgate Optic White Overnight Teeth Whitening Pen. However, if you’d rather have long-lasting results that are less likely to need a top up, Crest 3D White’s Professional Effects Whitestrips may be a preferable option, as results from a full treatment can last for at least 12 months.

What’s in the box?

The Colgate Whitening Pen Kit contains:

  • Optic white toothbrush
  • Whitening pen

Colgate whitening pen ingredients

Active: Hydrogen Peroxide

Inactive: Dimethicone, Petrolatum, PVP, Trimethylsiloxysilicate / Dimethiconol Crosspolymer, Silica, Aroma, Sodium Saccharin, Cetylpyridinium Chloride


Colgate’s whitening pen is an effective tool for DIY teeth whitening. Furthermore, when you use it as recommended by the manufacturer, it has been shown to be both safe and effective. However, it is only available for purchase with the Optic Whitening Toothbrush, not as a standalone product. This is because it is designed to be used in conjunction with the toothbrush for maximum results. Therefore, if you are looking for an easy whitening option which is hard to lose, then the whitening pen should be a product that you seriously consider.

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See how the Colgate Whitening Pen compares on our Best Teeth Whitening Pens round up.

Frequently asked questions

Can I buy the toothbrush and the whitening pen separately?

No, you cannot. You can only buy the whitening pen in a kit alongside the toothbrush.

Can I buy pen refills?

Pen refills are not available. Therefore, if you would like extra whitening gel, you will have to order a new kit. Remember, that is important to regularly change out your toothbrush anyway so this should not be a problem.

Can I buy toothbrush replacement heads?

The toothbrush is a manual toothbrush in design and does not have changeable heads. Therefore, if you would like a new toothbrush head, you will have to order a new toothbrush.

Which Colgate toothbrush kits include the whitening pen?

The main toothbrush kits which include the whitening pen are the Colgate Optic Whitening Toothbrush, and the Colgate Max Whitening Toothbrush.

When does the gel start working?

The formula created in the Colgate whitening pen means that the gel starts working as soon as you apply it to your teeth.

Will the Colgate Optic Whitening toothbrush whiten my teeth?

The Colgate Optic Whitening toothbrush is specially designed with stain removers and polishing bristles that will aid whitening. However, using it on its own without the whitening pen will be substantially less effective.

How long does the gel in the pen last?

This is dependent on individual usage. It will usually last between 2-6 weeks. However, Colgate recommends that you change it every 3 months, regardless.

Is it safe to use on a daily basis?

If you use it as directed, it should be safe. Furthermore, it is designed to be used twice a day.

What if I experience tooth sensitivity and/or gum discomfort?

It is not unusual to experience tooth sensitivity and gum discomfort. If it is mild and temporary, it is not something to be concerned about. However, if sensitivity and discomfort persists, or is more than mild, then you should discontinue use and consult your dentist.

Will the Colgate whitening pen whiten my dental work?

The whitening pen is not designed to be used on crowns, braces, or other kinds of dental work. If you have these, consult your dentist prior to use.

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Last update on 2024-05-25 / Affiliate links / Images from Amazon Product Advertising API

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