What potential negative effect can daily application of glycerin-heavy moisturizing products cause?
Answer
Inadvertently feed yeast or bacteria, leading to irritation or infection.
Glycerin is classified as a sugar alcohol and acts as a powerful humectant, meaning it effectively draws moisture into the tissues it contacts. However, for some individuals, especially those with sensitive internal environments or existing microbial imbalances, this high sugar content can serve as a ready food source for resident yeast or bacteria populations. The resultant overgrowth or imbalance can then manifest as irritation, increased burning sensations, or symptomatic infections, necessitating a switch to products formulated without high concentrations of glycerin, often those buffered for sensitive vaginal pH.

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