Hero Cosmetics
Ju Rhyu found pimple patches everywhere in South Korea and nowhere in the US. She started selling them on Amazon, built Mighty Patch into a $100M brand on 40% margins, and sold it for $630 million.
Ju Rhyu discovered pimple patches while living in South Korea, where the little acne stickers were in every drugstore and, back in the US, nowhere. In 2017 she started selling them on Amazon under the name Mighty Patch. Five years later, she sold Hero Cosmetics to Church & Dwight for $630 million.
What made the deal remarkable wasn’t only the price, it was the profit behind it. Hero reached $100 million in sales with a 40% EBITDA margin, keeping roughly $45 million in profit, and Church & Dwight paid 14 times that. Rhyu built one of the most capital-efficient beauty exits of the decade on a product that costs pennies to make: a sticker.
At a glance:
| Founded | 2017, by Ju Rhyu with Dwight Lee and Andy Seikho |
| Hero product | Mighty Patch, a hydrocolloid acne patch |
| Revenue | $100 million in sales by 2022 |
| Profit | ~$45 million EBITDA (40% margin) |
| Acquired by | Church & Dwight, September 2022 |
| Price | $630 million (5.5x sales, 14x EBITDA) |
The Story
The insight from a Korean drugstore
Rhyu was living and working in South Korea when she noticed something ordinary to everyone around her: pimple patches, small hydrocolloid stickers that sit on a blemish overnight, were a standard part of Korean skincare. They barely existed in the US market. She had a Columbia MBA, a corporate career, and a simple observation, that a product solving a near-universal problem was missing from one of the biggest beauty markets in the world.
A sticker, sold on Amazon
In 2017, Rhyu launched Mighty Patch on Amazon with her husband, Dwight Lee, and Andy Seikho. There was no glossy retail rollout and no big raise, just a genuinely useful product listed where people were already searching for acne solutions. The patches worked, the reviews compounded, and Amazon’s engine turned a good product into a fast-growing brand without a traditional marketing budget.
$100 million on 40% margins
The number that defined Hero wasn’t revenue, it was profitability. The brand scaled to $100 million in sales while holding a 40% EBITDA margin, which for a consumer brand is extraordinary. A simple product with low manufacturing costs, sold efficiently online, meant Hero kept a huge share of every dollar it earned instead of burning it to grow.
The $630 million exit
In September 2022, Church & Dwight, the consumer-goods giant behind Arm & Hammer and OxiClean, acquired Hero Cosmetics for $630 million. The deal valued Hero at 5.5 times sales and 14 times EBITDA, and by then Mighty Patch was the number two brand in the US acne category and the number one patch. Rhyu had gone from a drugstore observation to a nine-figure exit in five years.
The Strategy
One simple product, done first and best
Hero didn’t invent the pimple patch, but it made itself the brand that owned the format in the US. Focusing everything on a single, genuinely useful product let it dominate a category before larger players moved in. A narrow, excellent product beats a broad, mediocre catalog, especially when you’re first to bring a proven format to a new market.
Amazon as the launchpad
Selling on Amazon put Mighty Patch in front of people actively searching for acne fixes, and let Hero grow on the strength of the product and its reviews rather than an expensive brand-building campaign. Using a marketplace as the initial engine is one of the most capital-efficient ways to launch a physical product.
Profit over blitzscaling
Hero’s 40% margin was a choice as much as an outcome. Instead of torching cash to chase growth, Rhyu built a business that made money at every stage, which meant she never had to raise and dilute the way venture-fueled brands do. Profit is what gave her leverage in the sale, because a buyer pays a premium for earnings, not just revenue.
The Marketing
The product does the marketing
A pimple patch is visible, a little bit fun, and inherently shareable, and it became a fixture of TikTok and Instagram skincare content without Hero paying for most of it. When a product is novel and photogenic, customers create the earned media, and Mighty Patch spread through exactly that kind of organic demonstration.
Making an insecurity feel manageable
Acne is a source of anxiety, and Hero reframed a breakout as something you could stick a small, almost cute patch on and move on. That emotional shift, from hiding a blemish to treating it openly, gave the brand a friendliness that built loyalty beyond the product’s function.
The Numbers
| Year | Milestone |
|---|---|
| 2017 | Mighty Patch launches on Amazon |
| 2017–22 | Scales to $100M in sales at a 40% EBITDA margin |
| 2022 | Mighty Patch is #2 in US acne, #1 in patches |
| Sept 2022 | Church & Dwight acquires Hero for $630 million |
The exit math: Church & Dwight paid 5.5 times sales and 14 times EBITDA. That EBITDA multiple is the whole story. Buyers pay for profit, and Hero’s roughly $45 million in earnings on $100 million in sales is what justified a $630 million price on a five-year-old brand.
What You Can Learn
Profit is leverage. Hero sold for 14 times EBITDA because it actually made money. A profitable business commands a premium and keeps the founder in control, while an unprofitable one is always one bad quarter from needing someone else’s cash.
A simple product can be a huge business. Hero built a $630 million outcome on a sticker. You don’t need a complicated product, you need a genuinely useful one that you make and sell better than anyone else.
Bring a proven format to a market that’s missing it. Pimple patches already worked in Korea. Rhyu’s insight was spotting that the US didn’t have them yet. Watching what’s normal in one market and absent in another is a reliable way to find an idea.
Let the marketplace do the heavy lifting early. Launching on Amazon meant Hero grew on product and reviews instead of ad spend. A marketplace full of ready buyers is one of the cheapest ways to prove and scale a product.
Frequently Asked Questions
Who founded Hero Cosmetics?
Ju Rhyu founded Hero Cosmetics in 2017 with her husband, Dwight Lee, and Andy Seikho. Rhyu discovered pimple patches while living in South Korea and brought the format to the US market.
How much did Hero Cosmetics sell for?
Church & Dwight acquired Hero Cosmetics in September 2022 for $630 million, a valuation of 5.5 times sales and 14 times EBITDA.
Why was Hero Cosmetics so valuable?
Hero reached $100 million in sales with an unusually high 40% EBITDA margin, roughly $45 million in profit. That profitability, not just revenue, is what commanded a $630 million price.
What is Mighty Patch?
Mighty Patch is Hero Cosmetics’ hero product, a hydrocolloid sticker applied to a pimple to absorb it overnight. It became the number one acne patch in the US and the number two brand in the acne category overall.
Sources
- Forbes, “Hero Cosmetics Acquired By Church & Dwight For $630 Million,” September 2022. The acquisition and Mighty Patch’s category position.
- Beauty Independent, “High-Growth Pimple Patch Brand Hero Cosmetics Speeds To $630M Deal”. The 5.5x sales and 14x EBITDA multiples.
- BeautyMatter, “Church & Dwight Acquires Hero Cosmetics in $630 Million Deal”. $45M EBITDA, 40% margin, category ranking.
- Columbia Business School, “How Ju Rhyu, Hero Cosmetics Founder, Achieved a $630 Million Exit”. Founder background, $100M sales milestone.
- WWD, “Church & Dwight Acquires Acne Patch Innovator Hero Cosmetics,” 2022. Deal confirmation and timing.