What ingredient is known to cause the most allergic reactions in skincare products?

Fragrance is known to be a common source of allergic reactions in skincare products. Many fragrances are synthetic compounds that can trigger allergic responses in sensitive individuals. The complexity of fragrance formulations, which often contain numerous components, makes it difficult to identify specific allergens. Because fragrances are frequently added to products like lotions, creams, and cleansers solely for sensory appeal, they can lead to dermatitis, rashes, or even more severe reactions in susceptible consumers.

While preservatives, alcohol, and emollients can also cause reactions in certain individuals, fragrances tend to be more frequently implicated due to their widespread use and the diverse range of chemical substances they can contain. This sensitivity highlights the importance of proper labeling and transparency in ingredient lists, so consumers can select products that may be safer for their skin.