Ancient Egyptians used eyeliner made from a mixture of lead, malachite, and kohl, not only for cosmetic purposes but also as a form of sun protection.
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Some facial cleansers contain ingredients that can actually *dry out* your skin more, even if they claim to be moisturizing. It's important to read labels carefully and choose one suited to your skin type.
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Facial serums are often lightweight and quickly absorbed because they have a higher concentration of active ingredients and a lower concentration of water than other skincare products.
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Retinol is a vitamin A derivative, meaning your body can't produce it – you need to get it from external sources like food or skincare products.
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