how long does it take for hydroquinone work
How effective is hydroquinone? In most cases, lightening of skin should be seen after 4 weeks of treatment. Sometimes it may take longer to see any change but if no bleaching effect is seen after 3 months of treatment, you should stop using hydroquinone. To increase the effectiveness of hydroquinone you should stay out of the sun, or wear protective clothing and use a SPF15+ sunscreen when outdoors.