Tin Oxide


Occlusive-opacifying agent

No known benefits

Tin Oxide at a glance

  • Mineral-derived cosmetic ingredient that is most often used to lend opacity to a formula
  • May also function as a bulking agent, increasing the volume of the formula
  • White-to-grayish powder in raw material form
  • Also goes by the name “tin(IV) oxide” in research literature

Tin Oxide description

Tin oxide typically functions as an opacifying agent in cosmetic products and is commonly used in combination with mica and titanium dioxide. It can also function as a bulking agent, increasing the volume of the formula. Tin oxide occurs in nature as the mineral cassiterite. Cosmetic suppliers of tin oxide describe it as a white-to-grayish powder in raw material form. Tin oxide can also be formulated in a way that it functions as scrub particles. In 2014, tin oxide was deemed safe in up to 1.3% concentration by the Cosmetic Ingredient Review Expert Panel. This ingredient also goes by the name “tin(IV) oxide” in research literature.

Tin Oxide references

  • American Elements, Accessed January 2022, ePublication
  • PubChem, Accessed January 2022, ePublication
  • International Journal of Toxicology, 2014, pages 40S-46S

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated