Sodium Hydroxide is a pH adjuster used in very small amounts.
It raises pH so the final formula lands in the range required for stability, cleansing performance or skin compatibility. Its presence does not mean the finished product is caustic; final pH and concentration are what matter.
Information approach
Consumer-friendly summaries are informed by established cosmetic ingredient references such as INCIDecoder and Paula’s Choice Ingredient Dictionary, while avoiding turning ingredient-level evidence into medical claims about the finished product.
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