Smileactives teeth whitening gel is a peroxide-based formula designed to be added directly to your toothpaste. So, does it actually work? Instead of using whitening strips or trays, you just pump the gel onto your toothbrush with your regular toothpaste and brush as usual.
It’s marketed as a convenient, enamel-safe way to whiten your teeth without changing your routine. The formula contains hydrogen peroxide — the same ingredient found in dentist-recommended whitening treatments — along with a proprietary Polyclean® technology that helps spread the gel evenly across your teeth.
Smileactives can work — but with realistic expectations.
Best used for maintenance between whitening cycles, especially if you drink coffee, tea, or red wine regularly.
Does Smileactives really work?
Yes — Smileactives teeth whitening gel can help gradually whiten teeth by removing surface stains when used daily with your regular toothpaste. Results are subtle, not dramatic.
Is Smileactives safe for enamel?
Yes — it contains hydrogen peroxide at a gentle level, considered safe for enamel and daily use. Most users don’t report major sensitivity.
How does Smileactives compare to whitening strips?
Smileactives is best for daily maintenance, while whitening strips deliver stronger, faster results for deep stains.
Results are gradual—not dramatic. If your teeth are deeply stained, this won’t replace a full whitening treatment.
It’s a solid option for:
- Daily upkeep
- Gentle whitening without sensitivity
- Preventing stains from coming back after using strips
But don’t expect it to replace Crest strips or in-office bleaching. It’s a daily boost—not a deep cleaner.
The Truth About Whitening Strips (And Why They Still Work Best)
If you want noticeably whiter teeth, whitening strips still deliver the best results — especially when you stick with them.
Most people only do a whitening cycle once or twice a year. And it takes discipline — doing it every night for 2 to 3 weeks.
If you’re going to put in the effort, you might as well use strips that actually stay on and work.
That’s why I recommend the Crest 3D Whitestrips Age Renewal kit. Here’s why:
- Uses a proven strength of hydrogen peroxide
- Strong adhesive — they don’t slide around
- Designed to remove up to 30 years of stains
- You’ll start noticing results after just a few days
I’ve done a full 28-day cycle before a dentist appointment, and the hygienist literally said, “Your teeth are really white — what have you been using?”
If you’re putting in the work, Crest is worth it. It’s still the gold standard for at-home whitening.
Smileactives vs Crest Whitestrips: What’s the Better Choice?
These two products serve totally different purposes, so it really depends on what you’re looking for.
If you want fast, noticeable whitening, Crest Whitestrips are the better option. They use a stronger dose of hydrogen peroxide and are designed to lift deep stains. Most people see results within a few days, and a full cycle gives you a dramatically whiter smile.
Smileactives is more of a long-game, daily maintenance product. You brush with it alongside your normal toothpaste. Over time, it can help reduce surface stains and keep your teeth from yellowing again — but don’t expect a huge transformation right away.
Use Crest Whitestrips when you want a reset — like before an event, photos, or if it’s been months since your last whitening.
Smileactives won’t replace real whitening, but it can help you stay bright longer if you’re already putting in the effort.
My Favorite Whitening Hack for Photos, Events, and Big Nights Out
Let’s say you’ve done everything right. You’ve used Crest strips. You’re brushing consistently. Maybe you even added Smileactives to your routine. But then you’ve got a wedding, a first date, or a night where you really want to look your best — and your teeth still feel a little dull.
This is where HiSmile V34 Colour Corrector Serum comes in.
And I’ll be honest — I love this stuff.
It’s not a whitener. It’s not a bleach. It’s a purple serum that cancels out yellow tones instantly, using color theory the same way purple shampoo works for blonde hair. You apply it after brushing, and within seconds your teeth look brighter, cooler-toned, and more polished.
I think of it like makeup for your teeth.
It’s temporary. It’s cosmetic. But it works — and it can completely change how your smile looks in pictures or in person.
I personally use it for:
- Dates and social events
- Photo days
- When I’m shooting content or going on camera
It doesn’t whiten your teeth permanently, and it won’t lift stains. But for those moments where you just want that crisp, clean look — it’s one of the best little tools you can have.
I keep it right next to my skincare products. It’s the final step when I’m getting ready for something important. Call it vanity, call it a confidence boost — but I call it smart.
Pro Tip:
Use a dry, separate toothbrush and keep your mouth dry before applying. Don’t wet the brush. Brush the serum on gently, and be careful — it’s purple and can stain your lips or hands. It washes off, but still: apply with care.
Smileactives Teeth Whitening Gel: Frequently Asked Questions
Does Smileactives really whiten your teeth?
Smileactives can help whiten your teeth gradually by removing surface stains, especially when used consistently. It won’t give instant results, but it can brighten your smile over time.
Is Smileactives safe for enamel?
Yes. Smileactives uses a gentle level of hydrogen peroxide that is considered safe for tooth enamel when used as directed. It’s designed for daily use without long-term damage.
Does Smileactives make teeth sensitive?
Most people don’t experience major sensitivity with Smileactives, since the formula is milder than whitening strips or in-office bleaching. If you already have sensitive teeth or gums, you may notice mild irritation.
How long does Smileactives take to work?
Some users see changes within 1–2 weeks, but it’s a gradual process. Smileactives is not meant for dramatic, fast whitening results.
Does Smileactives expire?
Yes. Like most peroxide-based whitening products, Smileactives has an expiration date. Over time, the hydrogen peroxide becomes less effective, so always check the packaging before use.
Is Smileactives better than whitening strips?
Not for deep whitening. Whitening strips are stronger and work faster. Smileactives is better for daily upkeep and preventing stains from coming back.
How do you use Smileactives teeth whitening gel?
Apply the gel directly to your toothbrush alongside your regular toothpaste, then brush as normal. It’s designed for daily use.
Can you use Smileactives with fluoride toothpaste?
Yes. You can combine it with fluoride toothpaste with no issues.
Does Smileactives work on crowns or veneers?
No. Like most peroxide-based products, it only works on natural enamel.
Where can I buy Smileactives teeth whitening gel?
You can find it online through Amazon, the official Smileactives website, and other trusted retailers.
Is Smileactives safe to use every day?
Yes. It’s formulated for daily use and uses a gentle peroxide concentration that most people tolerate well.
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Sources
Great Lakes Dental – Does Purple Toothpaste Really Work?
Explains how purple toothpaste and color corrector serums make teeth look whiter—but don’t actually remove stains.
American Dental Association – Whitening
The ADA explains how hydrogen peroxide and carbamide peroxide are used safely and effectively in tooth whitening.
Cleveland Clinic – Is Teeth Whitening Safe?
Cleveland Clinic breaks down how whitening strips and gels work, and what to know about enamel safety and sensitivity.
Health.com – Is It Safe to Use Hydrogen Peroxide to Whiten Teeth?
Health.com reviews peroxide safety, effectiveness, and the risks of overuse in DIY teeth whitening.
Disclaimer:
This content is for informational purposes only and is not intended to replace professional dental advice, diagnosis, or treatment. Always consult your dentist before starting any new whitening routine or product.
Devin Brundell is the founder of Brundell Co., a wellness platform dedicated to natural healing, lifestyle medicine, and intentional living. He holds a Bachelor’s degree in Business Management from Southwest Minnesota State University (SMSU) and a Bachelor’s in Holistic Health Sciences from Quantum University. Devin is also finalizing certification as a Board Certified Holistic Health Practitioner through the AADP. His mission is to empower others to reclaim health through practical tools, clean living, and purpose-driven change — one intentional choice at a time.