Rembrandt Deeply White Whitening Strips

Sodium hydroxide is primarily used as a pH adjuster in formulations. While it can be irritating in high concentrations, its presence in small amounts is generally considered safe in cosmetic products.

Hydrogen peroxide is a common whitening agent that can cause enamel erosion and gum irritation, especially at high concentrations. In this product, it is likely present at a concentration above 6%, which raises safety concerns for oral use.

PEG compound — 1,4-dioxane contamination concern.

Synthetic polymer film-former — microplastic-adjacent.

Artificial sweetener — penalized under Scout doctrine.

PVP is a synthetic polymer used for its film-forming properties. While it is non-toxic, it is a plastic material that raises concerns regarding environmental impact and biodegradability.