Surf Excel is HUL's flagship detergent brand that commands 38% of the fabric wash market in India. It was launched in 1951 and has undergone changes over time to include various product variants like Surf Excel Quick Wash, Surf Excel Blue for color care, and Surf Excel Matic for front and top load washing machines. Surf Excel strengthened its leadership position through aggressive pricing, promotions, and distribution reach covering over 1 million retail outlets across India. It faces competition from regional brands but has maintained leadership through continuous innovation and effective marketing campaigns with taglines like "Dirt is Good" and "Surf Excel Hai Na!".