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Teeth Whitening Strips

The pH of At-Home Tooth Whitening Strips and Whitening Pens

Whitening strips and whitening pens are an extremely convenient, popular way to whiten your teeth at home, and they are also often used for touch ups to help maintain a bright white smile between whitening sessions at your dentist. Since these products spend a lot of time on store shelves at room temperature, they are usually engineered to be quite acidic in order to preserve their active whitening ingredients. Additionally, the way many at-home products are designed to be used permits significant contamination with saliva, which reacts with the bleaching agents and reduces their action on your teeth. In order to still be able to dissolve stains on teeth effectively and work as advertised, acids and calcium chelating agents are often needed in the product formulation; however, these ingredients can be quite harsh on your teeth.
To help you better understand your choices for tooth whitening, I have put together a table of the pH values for different tooth whitening strips and whitening pens that are readily available on the internet and in stores.

At-Home Tooth Whitening Strips & Whitening Pens

ManufacturerWhitening ProductWhitening Agent Concentration (%)Tested pHMSDS pH
CAO DentalSheer White!20% CP~7.0
PhilipsZoom! Take Home Whitening Pen5-6% HP6.4-6.6
P&GCrest Whitestrips – Classic3-7% HP5.0
P&GCrest Whitestrips – Supreme14% HP5.0
P&GCrest Whitestrips – Professional5-10% HP~5.85.0
P&GCrest Whitestrips – Advanced Seal9.5% HP5.0
P&GCrest 3D White Whitestrips – Vivid9-10% HP5.0
P&GCrest Whitestrips Daily Multicare3-7% HP5.0
P&GCrest 3D White Whitestrips Express9.5% HP5.0
P&GCrest Whitestrips – Healthy Radiance10% HP5.0
P&GCrest 3D White Whitestrips – Stain Shield3-7% HP4.8-5.2
P&GCrest 3D White Whitestrips – Advanced Vivid9.5% HP5.0
P&GCrest 3D White Whitestrips – Gentle Routine3-7% HP5.0
P&GCrest Whitestrips – Renewal, Premium, Premium Plus9-10% HP5.0
P&GCrest 3D White Whitestrips – Professional Effects10% HP5.0
P&GCrest Whitestrips Daily Multicare with Tartar Control3-7% HP4.8-5.2
P&GCrest 3D White Whitestrips – Intensive Professional effects9.5% HP5.0


Scott Frey

Scott Frey is a renowned Orthodontist, professional speaker, and founder of the More than Smiles Movement.