{"niche":"最有效的美白牙膏有哪些？","description":"What are the most effective whitening toothpastes?","products":[{"brand":"ARM & HAMMER","model":"Advance White Extreme Whitening Toothpaste, 6oz","price_gbp":2.93,"origin_country":null,"specs":{"fluoride_level":"Fluoride toothpaste","tartar_control":"Helps control tartar","whitening_ability":"2 shades whiter smile","sensitivity_relief":"Does not cause tooth sensitivity","baking_soda_content":"100% pure baking soda","halitosis_control":"Fresh Clean Mint flavor"},"confidence_score":null,"sources":[{"label":"Dillons","url":"https://www.dillons.com/q/arm+hammer+toothpaste","currency":"USD","source_country":"US","price":4.99,"price_gbp":3.67,"scraped_at":"2026-08-27T22:17:43.047709"},{"label":"Instacart","url":"https://www.instacart.com/products/3348946-arm-hammer-advanced-white-extreme-whitening-toothpaste-clean-mint-fluoride-toothpaste-6-oz","currency":"USD","source_country":"US","price":7.79,"price_gbp":5.73,"scraped_at":"2026-08-27T22:17:43.047709"},{"label":"Grocery Outlet","url":"https://www.instacart.com/products/3348946-arm-hammer-advanced-white-extreme-whitening-toothpaste-clean-mint-fluoride-toothpaste-6-oz","currency":"USD","source_country":"US","price":3.99,"price_gbp":2.93,"scraped_at":"2026-08-27T22:17:43.047709"}],"summary":"This fluoride toothpaste uses peroxide, Stain Defense Technology, and 100% pure baking soda to remove stains and help prevent new ones. It is designed for people seeking strong whitening with low abrasion and enamel-friendly cleaning.","ideal_for":"适合寻求有效美白牙膏的人士，因为它结合了过氧化物、Stain Defense Technology 和100%纯小苏打，并宣称可让笑容白2个色阶。"},{"brand":"Colgate","model":"Optic White Renewal Teeth Whitening Toothpaste","price_gbp":10.65,"origin_country":null,"specs":{"whitening_ability":"Removes 15 years of stains when brushing twice daily for two weeks"},"confidence_score":null,"sources":[{"label":"Kroger","url":"https://www.kroger.com/p/colgate-optic-white-renewal-whitening-toothpaste-value-pack-high-impact-white/0082785401226","currency":"USD","source_country":"US","price":14.49,"price_gbp":10.65,"scraped_at":"2026-08-27T22:17:43.047709"},{"label":"Pick 'n Save","url":"https://www.picknsave.com/p/colgate-optic-white-renewal-whitening-toothpaste-value-pack-high-impact-white/0082785401226","currency":"USD","source_country":"US","price":14.49,"price_gbp":10.65,"scraped_at":"2026-08-27T22:17:43.047709"}],"summary":"This enamel-safe fluoride toothpaste contains 5% hydrogen peroxide and is designed to whiten beyond surface stains. It is suited to people seeking strong whitening for persistent tea, coffee, and wine stains while maintaining daily cavity protection.","ideal_for":"适合寻求最有效美白牙膏的人群，因为其含有5%过氧化氢的配方旨在去除15年的牙渍，并超越表面污渍进行美白。"},{"brand":"Crest","model":"3DWhite Brilliance Whitening Toothpaste, Blast","price_gbp":6.24,"origin_country":null,"specs":{"fluoride_level":"0.243% sodium fluoride, 0.16% fluoride ion","whitening_ability":"Removes 100% more surface stains in 3 days and provides 24-hour stain protection","halitosis_control":"Helps remove odor-causing bacteria"},"confidence_score":null,"sources":[{"label":"Fred Meyer","url":"https://www.fredmeyer.com/p/crest-3d-white-brilliance-blast-teeth-whitening-toothpaste-anticavity-fluoride/0003077211265","currency":"USD","source_country":"US","price":8.99,"price_gbp":6.61,"scraped_at":"2026-08-27T22:17:43.047709"},{"label":"Ralphs","url":"https://www.ralphs.com/p/crest-3d-white-brilliance-blast-teeth-whitening-toothpaste/0003077205377","currency":"USD","source_country":"US","price":8.49,"price_gbp":6.24,"scraped_at":"2026-08-27T22:17:43.047709"}],"summary":"This enamel-safe fluoride toothpaste uses whitening polishing crystals to remove tough surface stains and make teeth visibly whiter in 3 days. It suits people seeking strong everyday whitening plus cavity protection and odor-causing bacteria removal.","ideal_for":"适合想要选择最有效美白牙膏的人群，因为它宣称在3天内多去除100%的表面污渍，并提供24小时防污保护和对牙釉质安全的美白效果。"},{"brand":"Crest","model":"3D White Brilliance 2 Step Toothpaste","price_gbp":14.69,"origin_country":null,"specs":{"fluoride_level":"0.15% W/V fluoride ion","whitening_ability":"Keeps smile up to 99% as white as a professional polish"},"confidence_score":null,"sources":[{"label":"Crest White","url":"https://crestwhite.com/crest-3d-white-brilliance-whitening-two-step","currency":"USD","source_country":"US","price":32.99,"price_gbp":24.25,"scraped_at":"2026-08-27T22:17:43.047709"},{"label":"Instacart","url":"https://www.instacart.com/products/2898848-crest-brilliance-whitening-two-step-toothpaste-6-3-oz","currency":"USD","source_country":"US","price":19.99,"price_gbp":14.69,"scraped_at":"2026-08-27T22:17:43.047709"}],"summary":"This two-step system combines a deep-cleaning toothpaste with a whitening finisher containing hydrogen peroxide. It suits adults and children aged 12 or older who want stronger daily stain removal and a brighter smile.","ideal_for":"对于追求有效美白牙膏的人来说，这是一个强效选择，因为其两步配方将深层清洁与含过氧化氢的美白收尾牙膏相结合，并宣称可使牙齿保持最高达专业抛光效果99%的洁白度。"},{"brand":"Sensodyne","model":"Repair & Protect Deep Repair Whitening Toothpaste","price_gbp":7.22,"origin_country":null,"specs":{"fluoride_level":"1100 ppm fluoride","whitening_ability":"Whitening action","sensitivity_relief":"Provides effective protection for sensitive teeth","halitosis_control":"Freshens breath"},"confidence_score":null,"sources":[{"label":"Galaxus","url":"https://www.galaxus.de/en/s6/product/sensodyne-repair-protect-75-ml-dental-care-products-11238133","currency":"USD","source_country":"US","price":10.7,"price_gbp":7.87,"scraped_at":"2026-08-27T22:17:43.047709"},{"label":"apohealth","url":"https://www.apohealth.de/en/products/sensodyne-repair-protect-whitening-zahnpasta-75-ml-zahncreme-9927678","currency":"USD","source_country":"US","price":9.82,"price_gbp":7.22,"scraped_at":"2026-08-27T22:17:43.047709"}],"summary":"This toothpaste contains stannous fluoride at 1100 ppm and provides whitening action while protecting sensitive teeth. It suits people who want daily sensitivity relief, cavity protection, fresher breath, and help restoring natural tooth whiteness.","ideal_for":"适合寻求有效美白牙膏的人群，因为它具有美白功效，并含有水合硅石，可去除牙渍，同时提供敏感牙齿保护。"}]}