What it is
Mica is a naturally occurring group of silicate minerals that are found in different types of rock.
What it does
Mica reflects the light and is used in many cosmetics and personal care products to give them sparkle and shine.
Mica can be irritating for people with sensitive skin. Because mica is made from crushed rocks, it tends to have sharp microscopic edges that can cause micro-tears when buffed onto the skin.
Mica can also aggravate acne and rosacea because, due to its heavy consistency, it requires more buffing to disperse the pigment, thus forcing makeup into the pores, clogging them.
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