Glossary

Quercetin
Quercetin (derived from a American oak tree) is a very highly concentrated form of bioflavonoids derived from citrus fruit. Its active ingredient, isoquercitin, is used in dark brown hair-dye shades but employed mainly for dyeing artificial hairpieces.
Quercetin (derived from a American oak tree) is a very highly concentrated form of bioflavonoids derived from citrus fruit. Its active ingredient, isoquercitin, is used in dark brown hair-dye shades but employed mainly for dyeing artificial hairpieces.