Whitening gel guide

Opalescence Gel

Even with good oral care, teeth can still look dull. Opalescence gel is one of the most popular options on the market — easy to use, clinically proven, and cost effective.

About

Why people choose it

Opalescence gel is convenient to use and has been shown to improve the mineral content of your tooth enamel for stronger teeth. Many whitening products leave teeth feeling sensitive — this gel is formulated to actually help lower sensitivity instead.

You can use the gel for around 30 minutes, twice a day. It remains active for 8–10 hours if you prefer overnight wear. There is also the option of using a reservoir tray or going without — whichever suits you best.

Patented micro potassium nitrate combined with fluoride helps manage sensitivity, and the ~20% water content reduces dehydration and unwanted shade shifts during treatment.

Strengthens enamel

Shown to improve the mineral content of tooth enamel — so your teeth come out brighter and stronger.

Lower sensitivity

Patented micro potassium nitrate plus fluoride helps reduce the sensitivity many other whitening gels cause.

~20% water content

The formula contains around 20% water to reduce dehydration and unwanted shade changes during wear.

Stays in the tray

The viscous gel holds its shape inside the tray rather than running across your teeth and gums.

Results to expect

Whitening that lasts

Users typically see good results on discolouration caused by pharmacological, congenital, systemic or age-related factors. Teeth tend to stay lighter for longer with the Opalescence formula compared to many alternatives.

Unlike some whitening products that stick to the teeth and leave an unpleasant residue, the viscous Opalescence gel stays held inside the tray throughout treatment.

If you plan to have a crown, veneer or composite fitted to any tooth, it is best to complete your whitening course first so the new restoration can be shade-matched to your brighter smile.

FAQ

Common questions

How long do I wear opalescence gel?

Typically 30 minutes per session, up to twice a day. It will remain active for 8–10 hours if you choose to wear it overnight (strength permitting).

How much gel is in each syringe?

Each syringe contains 1.2ml of product, enough for several full-arch applications depending on how generously you load your trays.

Can I use it overnight?

Yes, depending on the bleach strength you choose. Lower percentages are designed for longer wear, while higher strengths work in shorter sessions.

Will it whiten crowns, veneers or fillings?

No — whitening gel only works on natural enamel. If you plan to have a crown, veneer or composite fitted, complete your whitening course first so the new work can be matched to your brighter shade.

What flavours are available?

Opalescence gel comes in several flavours, and there is also an unflavoured option for anyone who prefers it.

How much does it cost?

Pricing depends on the bleach strength. As a guide, a lower 10% strength can work out at around £30 for four syringes, with higher strengths costing more per syringe.