ActiveCFL® Azelaic Acid is a naturally occurring chemical belonging to the class of dicarboxylic acids. In skin care, it is most commonly used to treat acne. However, azelaic acid also reduces melanin production by inhibiting (largely indirectly) the enzyme tyrosinase. It also suppresses the proliferation of abnormal melanin producing cells (melanocytes), apparently by reducing the rate of DNA synthesis.

Azelaic acid has been used to treat melasma, lentigo maligna and other hyperpigmentation problems. Topical azelaic acid has no or little depigmentation effect on normally pigmented skin, freckles, age spots (solar lentigines), and nevi. It is widely used in cosmetics and pharmaceuticals.

ActiveCFL®壬二酸是一种天然存在的化学物质，属于二羧酸类。在护肤方面，它好常用于治疗痤疮。然而，壬二酸也通过抑制（大部分间接）酶酪氨酸酶来减少黑色素生成。它也通过降低DNA合成速率显然抑制异常黑色素产生细胞（黑素细胞）的增殖。壬二酸已用于治疗黄褐斑，恶性斑痣和其他色素沉着过度问题。局部壬二酸对正常色素沉着的皮肤，雀斑，老年斑（太阳斑）和痣没有或几乎没有脱色作用。它广泛用于化妆品和药品。