COSRX Skincare Guide: Snail Mucin, BHA and What to Buy

COSRX is a South Korean skincare brand founded in 2013 and controlled by Amorepacific, which raised its stake to about 93% in 2023. Its best-known products are the Advanced Snail 96 Mucin Power Essence, the Low pH Good Morning Gel Cleanser, the BHA Blackhead Power Liquid and the Acne Pimple Master Patch, most of which cost $6 to $25 in the US. Start with the cleanser and the snail essence, and add the BHA only if you have clogged pores.

Before you buy, you can scan a product's barcode or label with the ingredient scanner in Pori to check the formula against your skin type. Pori reads the ingredient list for you; it does not diagnose skin conditions.

This guide covers who owns COSRX, what is actually in its bestsellers, which products suit which skin type, and how to buy K-beauty safely in the US. We compared published ingredient lists, brand claims and listed prices; we did not test these products on skin. Prices are US retailer list prices (Dermstore, Target and Ulta) as of November 2026, and they change often.

Who owns COSRX?

Amorepacific, the Korean group behind Sulwhasoo, Laneige and Innisfree, controls COSRX. It bought a 38.4% stake in September 2021 together with an option on the rest. In October 2023 it agreed to buy the remaining shares held by COSRX's largest shareholder and related parties for 755.1 billion won, which took its holding to about 93.2% and made COSRX a subsidiary.

COSRX was founded in 2013. By the time of the 2023 deal it sold in about 140 countries, and more than 90% of its sales came from outside Korea. Its 2022 sales were 204.4 billion won.

What is COSRX known for?

COSRX built its name on short, single-purpose formulas at low prices, many of them aimed at oily, acne-prone or sensitive skin. Product names usually state the lead ingredient and sometimes its share of the formula, as in "Snail 96" or "Retinol 0.5." The range now covers cleansers, toners, essences, serums, moisturizers, pimple patches and sunscreens. If you are building a routine around Korean products, our guide to Korean skincare routine steps explains where each type of product fits.

Is COSRX Snail 96 Mucin Power Essence worth it?

It is a pleasant, inexpensive hydrator. Expect better-hydrated, smoother-feeling skin, and little more. The essence is 96% snail secretion filtrate, followed by betaine, butylene glycol, sodium hyaluronate, panthenol, arginine and allantoin. No fragrance appears in the list. Dermstore lists the 100 ml bottle at $20.90.

The research on snail mucin is promising but limited. Small trials suggest it can help skin hold water and may help with fine lines, but most studies are small, short or industry-funded. Our guide to snail mucin benefits walks through what the studies measured. Use the essence on damp skin after cleansing and before moisturizer. If you avoid animal-derived ingredients, note that snail filtrate is collected from live snails.

The essence itself is not in our product catalogue. The shelf below shows a snail-based essence from Benton, another Korean brand, and a plain hyaluronic acid serum if you want hydration without snail.

Which COSRX cleanser should you use?

COSRX's two gel cleansers suit different skin.

• Low pH Good Morning Gel Cleanser is the classic. It lists betaine salicylate, a mild BHA, and tea tree oil as key ingredients, and it is formulated close to the skin's own slightly acidic pH. It suits oily and combination skin. Target lists the 150 ml tube at $14. Tea tree oil can irritate some sensitive skin, so patch test first if you react easily.
• Hydrium Triple Hyaluronic Moisturizing Cleanser is the gentler option for dry or normal skin. Retailers list three forms of hyaluronic acid plus panthenol among its key ingredients. It is listed at about $16 for 150 ml at Vitacost.

If neither is easy to find, CeraVe's Renewing SA Cleanser is a widely sold US alternative with salicylic acid for oily, congested skin. Our guide to types of face cleansers covers the other options.

Does COSRX BHA Blackhead Power Liquid work?

It is a gentle leave-on exfoliant for blackheads and clogged pores. COSRX describes it as "4% natural BHA." The ingredient list shows willow bark water as the base, followed by butylene glycol, betaine salicylate, niacinamide, panthenol and sodium hyaluronate. Ulta lists it at $25 for 100 ml.

Betaine salicylate is a gentler relative of salicylic acid. It is generally considered milder than the same percentage of salicylic acid, so 4% here is not twice as strong as a 2% salicylic acid liquid. That makes it a reasonable first BHA for people who found stronger exfoliants too drying. If you need more power, a 2% salicylic acid liquid such as the one in our Paula's Choice 2% BHA review is the standard comparison. See also salicylic acid for blackheads and blackheads vs sebaceous filaments.

Start every other evening, keep it away from retinoid nights at first, and wear sunscreen in the morning.

Do COSRX pimple patches work?

They help with one kind of pimple. The Acne Pimple Master Patch is a thin, clear hydrocolloid sticker, sold 24 to a pack for $6 at Dermstore. Hydrocolloid absorbs fluid from a spot that has come to a head and covers it, which also stops you from picking. Dermatologists at University Hospitals in Cleveland note that patches work best on surfaced pimples and do little for deep, cystic breakouts or blackheads, and that they do not prevent new breakouts.

Use them overnight on a clean, dry spot. They are a spot tool, so for regular breakouts a routine with a proven active works better. Our guide to the acne-prone skin routine covers that, and papules vs pustules helps you tell which spots a patch can reach.

Which COSRX sunscreen can you buy in the US?

Sunscreen is where buying K-beauty in the US gets complicated. In the US, sunscreen is regulated as an over-the-counter drug, and only filters on the FDA's list can be used. In June 2026 the FDA approved bemotrizinol, its first new sunscreen filter in about two decades, but several other filters common in Korean formulas are still not allowed. A Korean-market tube sold by a third-party seller may also lack the US Drug Facts label, which means it was not made and tested for US sale.

COSRX does sell US-labeled sunscreens. Its Vitamin E Vitalizing Sunscreen SPF 50+ is listed on DailyMed with a US drug label, with four active ingredients: 2.5% avobenzone, 9% homosalate, 4.5% octisalate and 9% octocrylene. Dermstore lists it at $25 for 50 ml. When you shop, look for the Drug Facts panel on the box.

The COSRX Aloe Soothing Sun Cream that many older K-beauty lists recommend is a different story. Several retailers list it as discontinued or out of stock, and it does not appear among COSRX's US drug labels, so we have left it off our shelves. For tested US options, see our sunscreen shelf and sunscreen for your skin type.

What should you buy from COSRX for your skin type?

COSRX also sells stronger actives, including The Retinol 0.5 Oil ($27 at Dermstore) and the Advanced The Vitamin C 23 Serum. Add those only after your basic routine is stable, one product at a time. Every routine still needs daily sunscreen.

How do you buy K-beauty safely in the US?

• Buy from authorized retailers. COSRX is sold at Ulta, Target, Dermstore and through brand storefronts on Amazon. Buying there, rather than from unknown marketplace sellers, lowers the risk of counterfeit or old stock.
• Check the box for US labeling. English ingredient lists, a US distributor address and, for sunscreen, a Drug Facts panel are good signs.
• Expect duties on direct orders. The US ended duty-free entry for low-value packages on August 29, 2025, so ordering straight from Korean sites can now add import charges.
• Check the date. Look for a batch code or expiry date, and avoid products that have sat in hot storage.

Is COSRX worth it?

For basics, yes. The cleansers, the snail essence and the pimple patches do simple jobs at low prices, and the BHA liquid is a gentle entry point to exfoliation. Be realistic about the snail essence, which is a hydrator with modest evidence behind it, and be careful with sunscreens: buy only US-labeled versions. If you like the idea of fewer, simpler products, COSRX fits well alongside drugstore brands such as CeraVe.