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E-cigarettes are not risk free, and shouldnt be used by people who dont smoke or arent at risk of smoking

Key ingredients Type: Toothpaste, pens and LED mouthguard Time of day to apply: After cleaning teeth Duration: 15 minutes daily for 14 days (repeat every three months) Sensitivity level: None Active ingredients: 0.1 per cent hydrogen peroxide, phthalimidoperoxycaproic acid, triclosan Time frame for noticeable results: Instant superficial effect after using toothpaste, 14 days for the more long-lasting effects of the pen and LED Your questions about teeth whitening answered What is the best at-home teeth whitening kit

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Key signs to watch for include a persistent sore throat that doesnt improve over time, changes in the voice such as hoarseness or a strained sound, and difficulty swallowing, which can cause pain or the sensation of food sticking in the throat