Detailed answer

Lanolin is a natural waxy substance derived from sheep's wool, and it is commonly used in skincare products as an emollient. However, some people can develop an allergic reaction to lanolin, resulting in a condition known as lanolin sensitivity. When individuals with eczema have a sensitivity to lanolin, it can exacerbate their eczema symptoms and trigger flare-ups. Lanolin can irritate the skin, further aggravating the already sensitive and inflamed skin of someone with eczema. Therefore, it is advised for individuals with eczema to avoid skincare products containing lanolin to prevent worsening of their condition.