{"product_id":"whitening-strips-pap-nha-xylitol-42-strips-21-treatments","title":"Whitening Strips — PAP + nHA + Xylitol (42 Strips · 21 Treatments)","description":"\u003cdiv class=\"OutlineElement Ltr SCXW14389452 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW14389452 BCX0\"\u003e\u003cspan data-contrast=\"none\" lang=\"EN-US\" class=\"TextRun SCXW14389452 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW14389452 BCX0\"\u003eHydrogen peroxide whitens teeth by penetrating enamel and\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"NormalTextRun SpellingErrorV2Themed SCXW14389452 BCX0\"\u003eoxidising\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW14389452 BCX0\"\u003e\u003cspan\u003e \u003c\/span\u003ethe stain compounds inside. It works. It is also the reason whitening causes sensitivity — peroxide does not distinguish between stain chromophores and enamel structure. Both are affected.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP Selected SCXW14389452 BCX0\" data-ccp-props='{\"335559738\":0,\"335559739\":180}'\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW14389452 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW14389452 BCX0\"\u003e\u003cspan data-contrast=\"none\" class=\"TextRun SCXW14389452 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW14389452 BCX0\"\u003ePAP — Phthalimidoperoxycaproic Acid — is a different mechanism. It releases reactive oxygen at the tooth surface to break down stain chromophores without the same degree of enamel penetration. The whitening result is comparable. The sensitivity is not.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP Selected SCXW14389452 BCX0\" data-ccp-props='{\"335559738\":0,\"335559739\":180}'\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW14389452 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW14389452 BCX0\"\u003e\u003cspan data-contrast=\"none\" class=\"TextRun SCXW14389452 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW14389452 BCX0\"\u003eSame formula. Smaller box. Seven treatments — one week of daily use.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP Selected SCXW14389452 BCX0\" data-ccp-props='{\"335559738\":0,\"335559739\":180}'\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW14389452 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW14389452 BCX0\"\u003e\u003cspan data-contrast=\"none\" class=\"TextRun SCXW14389452 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW14389452 BCX0\"\u003eThe 14-strip box is the right starting point for first-time users, a travel pack, or a top-up between full cycles. Every strip is identical to the 42-strip version. Every 30-minute session is the same. The result is the same. The quantity is different.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP Selected SCXW14389452 BCX0\" data-ccp-props='{\"335559738\":0,\"335559739\":180}'\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW14389452 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW14389452 BCX0\"\u003e\u003cspan data-contrast=\"none\" class=\"TextRun SCXW14389452 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW14389452 BCX0\"\u003eUltra-thin, stretchable strips. No-slip adhesion for the full 30 minutes. Residue-free removal. Clean Mint. Step Five.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP Selected SCXW14389452 BCX0\" data-ccp-props='{\"335559738\":0,\"335559739\":180}'\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"MasterMedi","offers":[{"title":"Pack of 1 \/ With Travel Case","offer_id":52823101112596,"sku":null,"price":7.0,"currency_code":"USD","in_stock":false},{"title":"Pack of 2 \/ With Travel Case","offer_id":52823101178132,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"Pack of 3 \/ With Travel Case","offer_id":52823101243668,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"Pack of 4 \/ Without Travel case","offer_id":52823101341972,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/4276\/9172\/files\/magnific_convert-white-backgrouind_gJkG6L6SXO.png?v=1784629135","url":"https:\/\/mastermedi.co\/products\/whitening-strips-pap-nha-xylitol-42-strips-21-treatments","provider":"MasterMedi","version":"1.0","type":"link"}