Bamboo toothbrushes and greenery on a white surface

Your morning tea, a coffee with a friend, dinner after a long week: your teeth are part of everyday life. If you have noticed their colour changing, start with curiosity rather than blaming yourself.

Tooth colour changes for different reasons

The NHS lists ageing, smoking, and regular coffee, tea, or red wine among reasons teeth may look darker or stained. Natural colour also differs from person to person.

A change is a reason to ask questions. If a change is sudden, limited to one tooth or comes with discomfort, get it checked by a healthcare professional first.

Describe the change you have noticed

Explain whether the change is across your smile or in one area, how long you have noticed it, and whether anything else feels different. Note any crowns, veneers or fillings you have.

You do not need to diagnose the cause before asking for help. Specific observations simply make the conversation more useful.

Be realistic about whitening

Whitening changes the colour of natural teeth. Results vary, so a subtle, natural-looking change is a realistic aim.

Read the appointment process, check the price, and ask how the provider compares your starting and final shades. Those details help you make an informed choice.

Keep enjoyment in the picture

Looking after your smile should fit into a life you enjoy. Ask for practical advice about your usual habits and the care that matters for your mouth.

Our London price guide and appointment guide help you prepare questions. To speak with ishSmile before choosing a slot, call 0207 173 5298.

Sources & further reading

Written by the ishSmile editorial team as general reading, with independent sources linked below. These sources may describe other whitening options that differ from our guided, self-applied visit.

Planning teeth whitening in London?

Compare the appointment price and what is included, then choose your London location. If you have sensitive teeth or gum concerns, check with a healthcare professional first.