Researched by Helena DeMaria-Williams
Formula IngredientCosmetic ColorantMica
INCI: Mica
Mica is a group of naturally occurring silicate minerals characterised by their sheet-like crystalline structure, giving them a distinctive reflective, pearlescent shimmer. In cosmetics, it is milled into fine particles and used primarily as a cosmetic colorant and opacifying agent, reflecting and diffracting light to create luminous, brightening, and highlighting effects on the skin. It is also used as an anti-caking agent and bulking agent in powder formulations, and serves as the base substrate for coated pearl pigments when layered with metal oxides such as titanium dioxide or iron oxides.
Category
Cosmetic Colorant
Irritation Risk
Low
Skin Types
all skin types, oily, dry, combination, sensitive, acne-prone
What does this do in a formula?
light reflection, luminosity, brightening effect, opacity, texture improvement, anti-caking in powders, base for pearl pigments
Is Mica safe? Key considerations
Can Mica cause irritation?
Low RiskMica is considered a low-irritation ingredient at cosmetic use concentrations. The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that mica is safe for use in cosmetics. It is not subject to EU CosIng Annex II (banned) or Annex III (restricted) restrictions for topical cosmetic use. Inhaled mica dust (occupational exposure in mining/processing) can cause lung damage (pneumoconiosis), but this is not relevant to finished cosmetic products applied to skin. Very finely milled mica particles in loose powder products should not be inhaled, and caution is warranted with loose powders used around infants or people with respiratory conditions.
Does Mica increase sun sensitivity?
No RiskMica does not increase photosensitivity. It is chemically inert and has no photosensitising properties. It is commonly included in SPF formulations as a filler and colourising agent.
Is Mica safe during pregnancy?
SafeMica is considered safe for use during pregnancy when applied topically. It is not absorbed systemically through intact skin and has no known reproductive or developmental toxicity. No pregnancy safety concerns are noted in available cosmetic safety databases. Loose powder mica products should not be inhaled, which is a general precaution applicable to all people.
How does Mica work?
Mica is a group of naturally occurring silicate minerals characterised by their sheet-like crystalline structure, giving them a distinctive reflective, pearlescent shimmer. In cosmetics, it is milled into fine particles and used primarily as a cosmetic colorant and opacifying agent, reflecting and diffracting light to create luminous, brightening, and highlighting effects on the skin. It is also used as an anti-caking agent and bulking agent in powder formulations, and serves as the base substrate for coated pearl pigments when layered with metal oxides such as titanium dioxide or iron oxides.
Individuals with respiratory conditions (avoid inhaling loose powder formulations) should review the considerations above before use.
Which products contain Mica?
Shop products that contain Mica
