Quercus infectoria gall extract

Quercus infectoria gall extract (CAS 93165-57-2), also known as oak gall extract, is a plant-derived ingredient obtained from the galls of the Quercus infectoria oak tree. Rich in tannins and polyphenolic compounds, it functions as a natural antioxidant, astringent, and preservative across multiple industries.

In personal care and cosmetics, it is incorporated into toners, intimate hygiene products, and anti-aging formulations where astringent and skin-tightening effects are commercially valued. Pharmaceutical manufacturers use it as an active or excipient ingredient in topical preparations targeting inflammation.

In oral care products such as mouthwashes and gum formulations, its antimicrobial and tannin content supports preservation and tissue-firming claims. Food and nutraceutical applications leverage its antioxidant activity to extend shelf life in sensitive formulations.

Quercus infectoria gall extract is supplied primarily as a dry powder or standardized liquid extract. Standardization is typically expressed by tannin or gallic acid content, with specifications varying by supplier and end-use requirement.

Both cosmetic-grade and pharmaceutical-grade material are available, with buyers commonly requesting documentation to USP or Ph. Eur. general monograph standards for botanical extracts. This ensures the highest level of purity and consistency for industrial applications.