Best Whitening Strips 2026
We tested 14 whitening strip products across three markets over 30 days, assessing whitening performance, sensitivity, ease of use, and value. Whitening strips are the most accessible format for at-home whitening — no device required, available in most pharmacies, and effective when used consistently.
Top Picks by Market
HiSmile PAP+ Whitening Strips
From A$60
A peroxide-free alternative with shorter session times. Good for sensitivity-prone users, though whitening efficacy is lower than hydrogen peroxide strips.
- PAP formula — no peroxide
- Shorter 10-minute sessions
- Very low sensitivity
- Less whitening efficacy than HP strips in AU market
- Premium price for results achieved
- PAP evidence base still developing
SmilePro Whitening Strips
From A$55
PAP-based strips with a non-slip application format. Good sensitivity profile and enamel safety, though whitening efficacy is below the HP benchmark.
- PAP-based formula — enamel-safe
- Non-slip application
- Low sensitivity profile
- Less whitening efficacy than HP strips
- Fewer sessions per box than Crest
- Results slower than LED kit treatments
Colgate Optic White ComfortFit Strips
From A$40
A budget-accessible entry point into whitening strips. Longer session time and lower concentration than premium options, but widely available and affordable.
- Mass market availability
- Affordable entry price
- Comfortable flexible strip format
- 45-minute session time
- Lower HP concentration than Crest
- Slower results
HiSmile PAP+ Whitening Strips
From £40
Short session times and a no-peroxide formula make this a convenient option for sensitive users. Results are moderate relative to the price.
- Very short 10-minute sessions
- PAP formula — no peroxide
- Minimal sensitivity
- Premium price for results achieved
- Whitening less pronounced than Spotlight
- Strong marketing — independent evidence limited
SmilePro Whitening Strips
From £30
PAP-based strips with a non-slip application format. Good sensitivity profile and enamel safety, though whitening efficacy is below the Spotlight benchmark.
- PAP-based formula — enamel-safe
- Non-slip application
- Low sensitivity profile
- Results slower than Spotlight
- Fewer sessions per box than budget options
- Less pharmacy availability in UK
Pearl Drops Whitening Strips
From £20
A budget entry point for UK buyers. Widely available and affordable, though whitening efficacy and strip adhesion are below the premium options.
- Very affordable
- Widely available in UK supermarkets
- Reasonable sensitivity profile
- Lower whitening efficacy
- Strips can slip during application
- Less consistent results
HiSmile PAP+ Whitening Strips
From $45
Short session times and a no-peroxide formula make this a convenient option for sensitive users. Results are moderate relative to the price.
- Very short 10-minute sessions
- PAP formula — no peroxide
- Minimal sensitivity
- Premium price for results achieved
- Whitening less pronounced than HP strips
- Strong marketing — independent evidence limited
SmilePro Whitening Strips
From $40
PAP-based strips with a non-slip application format. Good sensitivity profile and enamel safety, though whitening efficacy is below the HP benchmark.
- PAP-based formula — enamel-safe
- Non-slip application
- Low sensitivity profile
- Less whitening efficacy than HP strips
- Fewer sessions per box than Crest
- Results slower than LED kit treatments
Colgate Optic White Strips
From $30
A mainstream US option from Colgate. Accessible and affordable, but outperformed by Crest and HiSmile in our testing.
- Strong brand recognition
- Good pharmacy availability
- Affordable price point
- Moderate whitening performance
- Strips can feel uncomfortable
- Results take longer to appear
Full Comparison Table
| Product | OHA Score | Price | Session Time | Sessions |
|---|---|---|---|---|
Top PickCrest 3D Whitestrips Professional Effects |
8.3/10 | From A$75 | 30 min | 20 treatments |
HiSmile PAP+ Whitening Strips |
7.9/10 | From A$60 | 10 min | 14 treatments |
SmilePro Whitening Strips |
7.8/10 | From A$55 | 30 min | 14 treatments |
Colgate Optic White ComfortFit Strips |
7.2/10 | From A$40 | 45 min | 14 treatments |
| Product | OHA Score | Price | Session Time | Sessions |
|---|---|---|---|---|
Top PickSpotlight Oral Care Whitening Strips |
8.4/10 | From £35 | 1 hour | 14 treatments |
HiSmile PAP+ Whitening Strips |
8.0/10 | From £40 | 10 min | 14 treatments |
SmilePro Whitening Strips |
7.8/10 | From £30 | 30 min | 14 treatments |
Pearl Drops Whitening Strips |
7.4/10 | From £20 | 30 min | 14 treatments |
| Product | OHA Score | Price | Session Time | Sessions |
|---|---|---|---|---|
Top PickCrest 3D Whitestrips Professional Effects |
8.5/10 | From $55 | 30 min | 20 treatments |
HiSmile PAP+ Whitening Strips |
8.0/10 | From $45 | 10 min | 14 treatments |
SmilePro Whitening Strips |
7.8/10 | From $40 | 30 min | 14 treatments |
Colgate Optic White Strips |
7.4/10 | From $30 | 30 min | 14 treatments |
How Whitening Strips Work
The active ingredient
Most whitening strips use hydrogen peroxide (HP) as the active whitening agent. HP penetrates the enamel surface and oxidises the organic compounds responsible for tooth discolouration. UK and EU strips use PAP (phthalimido-peroxy-caproic acid) or very low-concentration HP due to regulatory restrictions. PAP produces whitening with lower sensitivity but with less clinical evidence at consumer concentrations.
Contact time and concentration
Whitening efficacy is a product of both concentration and contact time. A 30-minute session with a 10% HP strip produces more whitening than a 10-minute session with a 6% strip. This is why strips require longer sessions than LED kits — the lower concentration requires extended contact to achieve comparable results.
Coverage limitations
Strips cover the front 6 to 8 teeth only. They cannot reach the back teeth, the gumline, or the spaces between teeth. Tray-based LED kits provide full-arch coverage and more even results. If you have visible back teeth when smiling, a tray-based kit will produce more uniform whitening.
Sensitivity
Strips cause more sensitivity than LED kits because the gel is in direct contact with the tooth surface for longer. The extended contact time increases dentinal tubule permeability. If you have pre-existing sensitivity, choose a PAP-based strip or use a desensitising toothpaste for two weeks before starting a course.
How We Tested
Every product in this guide was purchased at retail price. We do not accept free products in exchange for reviews. Testing ran for a minimum of 30 days per product, following the manufacturer's recommended course. Shade assessments were conducted at day 7, 14, and 30 using the VITA Classical Shade Guide — the same system used by dentists.
Our advisory dentist reviewed ingredient formulations and assessed clinical safety. Products are scored across six criteria: whitening performance (30%), sensitivity (20%), ease of use (15%), coverage and adhesion (15%), value for money (10%), and ingredient quality (10%).
Buying Guide
Strips vs LED kits: which is right for you?
Whitening strips are the most accessible format — no device required, available in most pharmacies, and lower upfront cost. LED kits produce faster, more even results with lower sensitivity due to shorter session times (10 minutes vs 30 to 45 minutes) and full-arch tray coverage. For regular whitening, an LED kit is the better long-term investment. For occasional use, travel, or budget-conscious buyers, strips are a practical choice.
HP vs PAP: which formula to choose
Hydrogen peroxide is the most clinically validated whitening agent and is permitted at higher concentrations in Australia and the US. PAP is used in UK and EU markets where peroxide concentrations are restricted. PAP produces results with lower sensitivity, though clinical evidence for comparable efficacy at consumer concentrations is still developing. If you are in the UK or EU, PAP-based strips are your primary option.
Managing sensitivity
Whitening strips cause more sensitivity than LED kits because the gel is in direct contact with the tooth surface for longer. To reduce sensitivity: use a desensitising toothpaste for two weeks before starting a course; choose a PAP-based or low-concentration formula; skip a day between sessions if sensitivity is significant; and avoid very hot or cold food and drinks during the course.
Getting the most from your strips
Apply strips to dry teeth for better adhesion — pat teeth dry with a tissue before application. Avoid eating, drinking (except water), or smoking during the session. Do not use strips more frequently than directed. After completing a course, use a whitening toothpaste for daily maintenance to extend results.
Frequently Asked Questions
How long do whitening strip results last?
Results from a full course of whitening strips typically last 3 to 6 months with normal dietary habits. Coffee, red wine, and tea are the primary causes of restaining. Using a whitening toothpaste between courses can extend results. A touch-up course of 3 to 5 treatments every 3 months maintains shade improvement.
Are whitening strips safe for enamel?
When used as directed, whitening strips are considered enamel-safe by dental associations. Overuse or very high concentrations can cause temporary sensitivity and, in rare cases, enamel damage. Follow the manufacturer's instructions and do not exceed the recommended number of treatments per course.
Can I use whitening strips if I have sensitive teeth?
Yes, but choose a PAP-based strip or a low-concentration HP formula. HiSmile PAP+ and Spotlight Oral Care are designed for sensitivity-prone users. Using a desensitising toothpaste for two weeks before starting a course significantly reduces sensitivity during treatment.
How do whitening strips compare to LED kits?
LED kits generally produce faster, more even results with lower sensitivity due to shorter session times (10 minutes vs 30 to 45 minutes). Strips are more accessible and require no device. For regular whitening, an LED kit is the better long-term investment. For occasional use or travel, strips are a reasonable alternative.
Can I use whitening strips if I have crowns or veneers?
Whitening agents do not affect ceramic, porcelain, or composite restorations. If you have crowns or veneers on visible front teeth, whitening your natural teeth may create a colour mismatch. Consult your dentist before starting a whitening course if this applies to you.