The Murad Rapid Age Spot and Pigment Lightening Serum has been formulated with two percent hydroquinone, which is known to brighten pigment. It is a powerful ingredient that definitely evens out skin tone and removes sunspots and age spots, especially as it was combined with another skin brightening ingredient: hydroquinone with hexapeptide-2. This product should be strictly used at night time only, as using it in the morning and then exposing yourself to the sun can cause damaging effects to the skin and may even darken age spots and dark spots further. But as we made sure to stick to its instructions, it has done wonders to us, especially in brightening our complexion and removing the marks and signs of aging and skin damage.