HiSmile Whitening Strips Review (2025)

Is HiSmile Right For You?

If you want a pearly white smile but worry about the harsh chemicals in traditional teeth whitening products, HiSmile PAP+ Whitening Strips might be a great option. They’re peroxide-free and gentle on your teeth.

The PAP+ in HiSmile is clinically proven to whiten teeth. Having used it myself, I saw a visible difference after the first application. I also didn’t experience any sensitivity issues throughout my treatment.At NewMouth, we understand the challenges of having sensitive teeth, so we test the latest products. We’re here to help you find the best teeth whitening strips that are safe, effective, and affordable.

Pros & Cons of HiSmile Whitening Strips

I tested HiSmile’s PAP+ Teeth Whitening Strips and looked at customer reviews on YouTube, Amazon, and Trustpilot. Here's an overview of its pros and cons based on my experience and what others are saying:

What I Like About HiSmile

“They are peroxide-free whitening strips, which is great for people with sensitive teeth like me because it means we can actually whiten our teeth and not be in pain."

YouTube Review

• Effective teeth whitening. HiSmile claims noticeable results after a single application, and in my experience, that seems accurate.
• Safe for sensitive teeth. HiSmile uses PAP+ instead of traditional peroxides since bleaches can trigger tooth sensitivity in many people.
• Great value for money. The price feels fair at about $4.14 per treatment, especially compared to professional whitening costs.
• Easy application. The strips are a breeze to apply and won’t leave a mess. The instructions are clear, and they fit right into my daily routine.
• On-the-go teeth whitening. If a special occasion pops up and I need a brighter smile, these strips make it easy to achieve that.
• Positive customer reviews. It's encouraging to see that I share similar experiences with many users who have tried the product.
• Eco-friendly packaging. I love that the packaging is sustainable with two eco-certifications. It shows the brand cares about the environment.

What I Don’t Like About HiSmile

"The one thing about the product, when you get it, there's no instructions on how many days it's supposed to take you to do the treatment."

YouTube Review

• Limited effectiveness. Because of its gentle formula, it might not get rid of deeper stains from coffee, tea, or wine.
• Varied results. Some people get amazing results quickly, while others say it takes longer or doesn't quite give them the shade they want.
• Sensitivity issues. While HiSmile didn’t trigger my sensitive teeth, I've read a few comments from people who still experienced sensitivity.
• Cost variations. The price changes a lot depending on where you buy them. It's annoying, but it's worth it to shop around for the best deal.
• Customer service complaints. Unfortunately, they seem to provide little support to users who encounter issues with their orders.

What You’ll Get (Inside The Package)

HiSmile’s Whitening Strips come in a pretty pink package that costs $29. Inside it, you'll find 7 packets in the same color.

Each packet contains two whitening strips: one for your upper teeth and one for your lower teeth. You’ll get a total of 14 strips with every pack.

If you’re into eco-friendly products like me, you’ll appreciate the brand’s effort to make sustainable packaging for its whitening strips. 

This earned the product two certifications from Amazon:

• Compact by Design ⁠— This means it’s designed to be small and lightweight, reducing carbon emissions and making shipping more efficient.¹
• Climate Pledge Friendly ⁠— This is awarded to products that meet one or more sustainability standards from Amazon or third-party certifications.²

HiSmile Ingredients: Safety & Sensitivity Concerns

HiSmile Whitening Strips are great for people with naturally sensitive teeth or anyone concerned with the safety of peroxide-based teeth whiteners.

While most brands contain bleaching agents like hydrogen peroxide and/or carbamide peroxide, HiSmile has PAP+ as its main ingredient.^3,4

PAP+ is a unique blend of phthalimidoperoxycaproic acid (PAP) and other ingredients like hydroxyapatite (HA) and potassium citrate. They work together to do three things:^5,6,7

• Whiten your teeth
• Strengthen your tooth enamel
• Reduce your risk for sensitivity

PAP+ gently lifts teeth stains and doesn’t release free radicals like peroxides, which can damage your teeth and cause tooth sensitivity. Unfortunately, this formula may not be as effective on deeper stains caused by tea, coffee, and wine.^4,5,7,8

My Experience Using Hismile's Teeth Whitening Kit

I tried HiSmile’s PAP+ Teeth Whitening Strips for a few weeks. Below is a more detailed breakdown of my experience, including:

• Before and after results
• Sensitivity and other side effects
• Ease of use and application
• Frequency and length of treatment
• Value for money
• Maintaining my results

Before & After Results

Before using HiSmile’s PAP+ Strips, I had yellowish teeth. The bottom of my lower front arch was also noticeably darker than the rest of my teeth.

They became a bit brighter after my first treatment. When I finished two packs, my teeth were several shades lighter than when I started.

Here are photos from before and after I completed my HiSmile treatment:

My treatment lasted for 14 days. And if you’ll notice, my upper and lower teeth are now brighter and have a more even color all throughout.

Results may vary: Everyone is unique, and the treatment could have a different effect on your teeth. HiSmile says so themselves:⁹

“While our PAP+ formula has been clinically proven to provide instant results after just [one] treatment, we do understand that everyone’s teeth are different and the results will vary.”

In my case, HiSmile’s strips lived up to the claims.

For faster teeth whitening, you can apply the strips as often as needed, or anytime you need instantly brighter teeth, like before a meeting or a date.

Sensitivity & Other Side Effects

I’ve tried other peroxide-based teeth whitening strips, and they’ve irritated my gums, left a nasty aftertaste, and given me tooth sensitivity. Thankfully, I didn’t experience any of these side effects with HiSmile.You do want to avoid eating for at least an hour after your treatment. During this time, your tooth enamel is vulnerable and more likely to develop stains

Ease of Use & Application

HiSmile’s whitening strips are easy to apply. They stick well and won’t leave a mess, unlike some brands with too much “goo” from the adhesives. 

The instructions are printed on each packet and they’re easy to follow.

Fitting HiSmile into your routine: You can use the strips any time of the day and leave them on while doing something else (like driving!).

I usually applied the strips before bedtime, so I didn’t have to worry about food that might stain my teeth. But there were nights when I’d forget.

When this happened, I would do it twice the next day to make up for the missed treatment: once in the car before driving to work and once at night.

Frequency & Length of Treatment

It took me 14 days to lighten my teeth. I wasn’t really after a particular shade. But since I liked the results, I didn’t extend my treatment.

You may need fewer or more treatments than I did to get the results you want. The length of your treatment will depend on factors like:

• Your current shade of teeth
• The shade you want to achieve
• The severity of your teeth stains
• Frequency of your treatment
• Your eating habits

HiSmile says you should see visible results after the first treatment. But I’ve read reviews of people who didn’t see changes until after 3 or 5 days. 

Each whitening treatment lasts for 30 minutes. You can do it once a day or as often as you’d like.^10,11

Value for Money

HiSmile’s PAP+ Strips cost about $4.14 per treatment. It has an amazing value considering it’s a peroxide-free alternative with impressive results. 

And if you’re lucky, HiSmile will throw in a gift with your purchase to sweeten the deal even more.

For comparison: Most whitening strips cost $1.42 to $3.14 per treatment. Professional whitening treatments cost anywhere from $400 to $1,500. 

Even if I needed 6 whole packs of HiSmile’s whitening strips to achieve the same brightness, I’d still end up saving hundreds of dollars.

Maintaining My Results

HiSmile doesn’t specify how we can use the strips after completing the treatment. It only says you can apply them as often as needed.¹⁰ 

Since I’m a heavy coffee drinker, I tried different treatment schedules to see which ones worked best for my teeth.

I found that applying the strips once every 1 to 2 weeks kept them in the shade I liked. You may need more or fewer touchups to maintain your smile. This would depend on your teeth, eating habits, and dental hygiene.

Customer Reviews on HiSmile Teeth Whitening Strips

I asked the help of our research team at NewMouth to analyze thousands of online reviews on HiSmile’s Teeth Whitening Strips. Here’s what we found:^9,10

Pros of HiSmile Teeth Whitening

"I have experienced zero sensitivity from this product which is unreal.”

YouTube Review

Most customers seem happy with HiSmile Whitening Strips. It gave them noticeably whiter teeth in a short time, boosting their confidence.

They appreciate its quick results, the ease of applying the strips, and its gentle formula which doesn’t irritate the gums or cause sensitivity.

Cons of HiSmile Teeth Whitening

"I don't think I got as good as a result with this product as I would if I was using pressed white strips or my take-home trays that I had made at my dental office."

YouTube Review

Some people were disappointed with HiSmile’s Teeth Whitening Strips. They say it didn’t work or give them the shade they wanted. 

Others claim it whitened their teeth, but it took longer than expected, or their results didn’t last long. Few people also experienced sensitivity.

Most of the complaints are related to HiSmile’s poor services. This includes late deliveries, receiving wrong items, and an unresponsive support team.

Where to Buy HiSmile Teeth Whitening Strips

You can buy the PAP+ Whitening Strips online for these prices:

• $29 per pack on HiSmile’s website (7 treatments at $4.14 each)
• $39 per box on Amazon for non-members (14 treatments at $2.79 each)
• $19.50 per box for Amazon Prime members (14 treatments at $1.39 each)
• $38.99 per box on CVS (14 treatments at $2.79 each)

For the best prices: I recommend purchasing from HiSmile’s website. The company frequently offers deals, free gifts, and bundled promos so you can buy several teeth whitening products at discounted rates.

I got my PAP+ Whitening Strips for $8 instead of $29 from HiSmile’s website and bought two packs.

Final Thoughts on HiSmile PAP+ Whitening Strips

HiSmile’s PAP+ Strips offer a promising solution for people who want a brighter smile without sensitivity. Its gentle, peroxide-free formula is less likely to cause sensitive teeth.

Results can vary but its affordable pricing and convenience compared to professional whitening treatments make it worth a try if you have mild discoloration and slightly yellow teeth.

However, there are other options besides HiSmile’s whitening strips that may work better for you. Here are some alternatives:

• For stubborn stains: Consider teeth whitening strips with low concentrations of peroxide. They whiten teeth more effectively than PAP+ alone, while still being relatively gentle on your teeth.
• For targeting stains: Teeth whitening kits like Auraglow allow you to whiten individual teeth without worrying about sensitivity.

If you're looking for dramatic results, you could also consider in-office teeth whitening treatments. Talk to your dentist to see what they recommend.