Tannic Acid

Tannic acid, is an organic compound with the chemical formula C76H52O46. It is a yellow or brownish yellow powder, and its aqueous solution turns blue black when it meets an iron salt solution. In industry, tannic acid is widely used in tanning leather and manufacturing blue ink. People chemically treat pig and cow hides with tannic acid, which can coagulate the soluble proteins in the hides. So, the raw leather that would have smelled and rotted in a few days turned into beautiful, clean, flexible, and durable leather. This tanning process is called leather tanning.

Usage and dosage: For external use, apply locally, 2-3 times a day. In the skincare industry, tannic acid is often used in acne removing skincare products, fully utilizing the astringent effect of tannic acid to achieve the goal of tightening the skin and removing acne.

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ISO 9001:2008 認證確保品質。

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接受的交貨條件：FOB、CFR、CIF、EXW；
接受的付款貨幣：美元；
接受的付款方式：T/T、西聯匯款；貝寶，貿易保證。
使用語言：英語。