This year’s four-day Prime Day set a new benchmark, with U.S. online sales reaching $24.1 billion, a 30% rise from 2024. Dongsung Pharmaceutical achieved robust results with its premium hair dye brand eZn and its naturalist brand Herb.
The Herb Speedy Color Cream, formulated with vegan ingredients to minimize scalp irritation, earned strong praise from U.S. consumers, boosting repeat purchases and positive reviews, which enhanced brand trust. The newly introduced SevenEight Gray Coverage Tint also gained traction, with strategic packaging and promotions spurring rapid sales growth, the company said.

The success was supported by a partnership with global e-commerce agency Clictive, alongside localized Amazon product pages and optimized social media and search advertising. The company attributed its strong performance to customized strategies tailored to local consumers, beyond mere marketplace presence.
“This performance underscores both the quality of our products and the strength of our brand strategy,” said Wonkyun Na, chief executive of Dongsung Pharmaceutical. “We aim to more than double our North American sales this year and establish ourselves as a leading global K-beauty brand.”
Kim Kuk Ju, HEALTH IN NEWS TEAM
press@hinews.co.kr