The P&G Crest Whitestrip products, 3D Professional Effects with Advanced Seal or Vivid Effects, appear to contain 14% hydrogen peroxide. Previous P&G premium whitestrips appear to have contained 10%. P&G did market a 14% product to dentists for in-office use about 8 yrs. ago. My perusal of current user reviews on 3D Professional Effects, etc. show sufficient indication of increased oral sensitivity from these products.
I want to hear from P&G about their clinical studies run with these products (especially the professional effects with advanced seal) on senior citizens in regard to oral sensitivity. I also want to learn the concentration of hydrogen peroxide used in these products.