The Enamel journal
Understand your teeth, day by day.
Whitening strips, food, brushing, coffee and tea, and progress photos: sourced explanations and practical tools you can use today.
How to make teeth whiter: what actually works
Toothpaste, strips, LED kits, the dentist and home remedies: what each method changes, what the studies found, and how to judge your own result.
How to whiten teeth naturally: what the studies actually show
Whitening teeth naturally with baking soda, lemon, charcoal or coconut oil: what the studies found, the risks for enamel, and what whitens instead.
Does turmeric whiten teeth? What the studies show
Turmeric does not whiten teeth: in lab studies it barely stains enamel, but it strongly stains the resins of veneers and fillings, and clear aligners.
What to eat after teeth whitening: is the white diet necessary?
Coffee, tea, red wine, cola: what the trials found about the white diet, what instruction sheets say about waiting, and how to judge your result.
Why are my teeth yellow? Causes and what helps
Coffee, tobacco, age or lighting: why teeth look yellow, what whitening toothpaste or whitening can change, and when to ask a dentist.
Does purple toothpaste work? What it changes, and for how long
Purple toothpaste tints teeth rather than whitening them. What the studies measured, how long it lasts, whether it’s safe, and how to check.
Whitening strips: how to use them, how often and when to pause
Before or after brushing, how often, and what to do if your teeth become sensitive: a sourced guide to using whitening strips.
Does LED teeth whitening work? What the light adds and what it doesn’t
LED kits and in-office lamps: what the studies found, why the gel does the whitening, what to check in a kit, and how to judge the result.
How long does teeth whitening last? What long-term studies found
Strips, trays or in-office: how long whitening lasts in the studies, why the first day can fool you, and how to make it last.
Foods and drinks that stain teeth, and what helps
Coffee, tea, red wine, cola, berries, soy sauce and tobacco: what stains the surface of teeth, what whitening toothpaste can reduce and simple habits.
Morning and evening dental care: a routine that fits your day
Brushing, fluoride toothpaste and cleaning between teeth: a clear adult routine, a morning and evening example, and a practical daily checklist.
How to remove coffee and tea stains from teeth
Coffee and tea stains sit on the surface: what removes them, what whitening toothpaste can and can’t do, and habits that keep new stains from building up.
Teeth whitening before and after photos: how to compare them
Before comparing teeth whitening photos, check the light, phone and framing. A practical method and a free checklist for your photo record.
Why do my teeth look yellow in pictures and on camera?
Lighting and your phone’s color rendering can make the same teeth look yellower in one picture than another. What changes, and how to compare fairly.
Tooth shade chart: what it shows and what a photo can’t tell you
How a tooth shade chart works, why a color chart on a screen or a selfie can’t give you a shade, and how to read the Enamel index instead.
These articles are for information and do not replace personalized dental advice. Our editorial approach