The new iGlow Brow Maximizer is the perfect eyebrow serum for those who want fuller and darker brows. The results usually appear after 6 to 14 weeks. Some need up to 16 weeks for optimal results. iGlow's mission is to always deliver the best and safest serums on the market. The iGlow Brow Maximizer has therefore undergone dermatological and ophthalmic studies to ensure that you get the safest and most gentle product, while also being the most effective. The product is vegan and not animal tested.