Teeth whitening: understand your options

Whitening changes the colour of natural teeth. Start with a dental assessment and discuss the outcome you hope to achieve.

Dentist-supervised whitening

A dentist may provide custom trays and gel for use at home, or offer a treatment in the surgery. The right approach depends on your teeth, gums and personal circumstances.

Shop-bought products

Products sold for home use are not the same as a dentist-prescribed treatment. Check ingredients, instructions and limitations, and ask your dentist before using a whitening kit.

Suitability matters

Whitening can cause sensitivity and gum irritation. It does not change the colour of crowns, dentures or implants. The NHS advises against whitening during pregnancy or breastfeeding and does not offer cosmetic whitening on the NHS.

Sources & editorial status

Prepared by the Dental Teeth Whitening Dentist editorial desk · 22 October 2026. Research-based introductory information; not individually clinically reviewed.

NHS: teeth whitening · NHS: dental treatments. Read these sources for full details and speak to a dentist about your own care.