ingredient 404

zinc sulfate

鋅和硫酸反應之後所產生的化學物質,並沒有研究顯示它對皮膚有益,可能造成皮膚刺激,也沒有研究顯示它對青春痘有效 。早期部份控油產品用以作為收斂毛孔成份,但並無真正控油價值。

No studies have shown that zinc reacts with sulfuric acid to produce chemicals that are good for the skin, may cause skin irritation, or are effective for acne. In the early stage, some oil control products were used as pore astringent ingredients, but they had no real oil control value.

International Journal of Dermatology, April 1985, pages 188-190 
Acta Dermato-Venereologica, Supplemental, 1990, volume 154, pages 1-6 p

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