Glabridin (PT90) is extracted from G. Glabra. Glabridin has a higher inhibititing force towards tyrosinase than arbutin, kojic acid, vitamin C and hydroquinone. It can still inhibit the activity of Tyrosinase Related Protein (TRP-2)—dopachrome, so that it has rapid, highly effectual lightening and depigmental effect. Further more, it is a scavenger similar to SOD, and possesses such effects as anti-spasm, anti-inflammation, anti-sensitizing, anti-oxidizing, and anti-quasi-estrogen.

Glabridin（PT90）是从G.Glabra提取的。 Glabridin对熊果苷，曲酸，维生素C和对苯二酚有较强的抑制酪氨酸酶活性。它仍然可以抑制酪氨酸酶相关蛋白（TRP-2） - 多色素的活性，从而具有快速，高效的增亮和脱色效果。此外，它是一种类似SOD的清除剂，具有抗痉挛，抗炎，抗敏，抗氧化和抗雌激素等功效。