Anua 3-Step Glass Skin Essential Set | Yua's Pick

"A Dark Spot Serum Only Works If the Skin Is Actually Clean Underneath It. That's the Logic Behind Putting a Cleansing System and a Niacinamide Serum in the Same Box."

Three steps. One oil cleanser, one foam cleanser, one serum. The ANUA Glass Skin Essential Set is built around a specific idea: that the cleansing you do before the active matters as much as the active itself. Clear the pores first. Then address the marks those pores left behind.

I'm Yua. I model and do some acting work in Hapjeong, and my skin is oily at the T-zone and prone to the kind of post-breakout marks that stick around long after the actual breakout has gone. The right cheek has two or three faint ones from last year that I've been slowly working on. Niacinamide is already in my routine - has been since university - so a serum with 10% Niacinamide and 4% Tranexamic Acid in the same formula is the P-axis upgrade I was already looking for. The cleansing system around it is what makes this a set worth talking about rather than just a serum in a bundle.

What does Heartleaf actually do, and why is it in both cleansers?

Heartleaf (Houttuynia Cordata) is a Korean botanical with calming and pore-controlling properties. In the foam cleanser, it's not a trace ingredient - Heartleaf Water makes up 33.32% of the formula, and there's an additional 3,000ppm of Heartleaf Powder on top of that. In the cleansing oil, it appears as an extract. The effect the brand is building toward is a deep cleanse that removes pore congestion and sebum without triggering further inflammation - which matters for oily skin that breaks out partly because the cleansing step is too harsh and disrupts the barrier. The foam cleanser also includes Betaine Salicylate and Capryloyl Salicylic Acid, two gentle salicylate derivatives that help clear pore congestion without the irritation risk of standard salicylic acid in a daily-use formula.

🥹 Yua's Note: Betaine Salicylate - a salt form of salicylic acid that provides milder BHA-type exfoliation. Gentler than standard salicylic acid on the skin barrier, making it suitable for daily cleanser use rather than leave-on treatments.

Also Worth Considering:

Capryloyl Salicylic Acid - a lipophilic salicylic acid derivative that works on the surface of the skin with lower irritation potential. Often found in daily-use cleansers for oily and acne-prone skin.

Also Worth Considering:

What is Tranexamic Acid (TXA) and how does it work differently from niacinamide on dark spots?

They target the same problem through different mechanisms, which is why putting them together makes sense. Niacinamide at 10% works by blocking the transfer of melanin from melanocyte cells into the upper skin layers - it interrupts the process of pigmentation after melanin has already been produced. Tranexamic Acid at 4% works earlier in the chain, inhibiting the interaction between keratinocytes and melanocytes that triggers melanin production in the first place. One stops the pigment from transferring; the other reduces how much gets made. For post-breakout marks that involve both existing discolouration and ongoing inflammation-triggered melanin production, the two working simultaneously is the more complete approach.

🥹 Yua's Note: Tranexamic Acid (TXA) - originally developed as a medical haemostatic agent, later found to have significant skin-brightening properties by interrupting the signalling pathway that triggers melanin production. More stable than Vitamin C and well-tolerated across skin types, including oily and resistant skin.

Also Worth Considering:

Is 10% niacinamide too high a concentration for daily use?

For oily, resistant skin: no. For sensitive or reactive skin: the source is honest about this, noting that some customers experienced irritation and that patch testing is specifically recommended. The 10% concentration is effective and within the range commonly studied for brightening results, but skin that is already reactive may prefer starting at once daily before building to twice daily. The set is positioned as suitable for normal, combination, and oily skin; multiple customer reviews in the source flag it as potentially not suited for sensitive skin types. If you know your skin reacts to actives, starting with the cleansing steps for a week before introducing the serum is the careful approach.

Do I need to double cleanse every morning, or is the oil cleanser only for PM?

In practice, the oil cleanser belongs in the PM routine. Its purpose is to dissolve oil-based makeup, sunscreen, and the day's accumulated sebum that a foam cleanser alone won't fully clear. In the morning, skin hasn't been exposed to those layers, so the foam cleanser alone is sufficient. The source's directions describe twice-daily use for the full set, but the Korean double cleanse convention - which this set is explicitly built around - treats the oil cleanser as an evening step. Using the oil cleanser twice daily is an option, not a requirement, and using the foam alone in the morning is standard practice.

The foam cleanser is listed as "unscented" but what should I expect?

The INCI list for the foam cleanser includes Eucalyptus Globulus Leaf Oil, which is a natural essential oil with a recognisable scent. The product also lists rosemary as a scent in some specifications. The formula does not contain added Fragrance/Parfum - the scent comes from the natural botanical ingredients. For most users this will be mild and pleasant. For skin specifically reactive to essential oils, it is worth knowing before purchase. The cleansing oil INCI does confirm Fragrance/Parfum is present, which is the more relevant note for fragrance-sensitive buyers.

Worth Knowing

The Set Is Built Around a Specific Logic: Oil cleanser first, foam cleanser second, serum third. The oil cleanser removes makeup, sunscreen, and excess sebum that sits on the surface and in pores. The foam cleanser's Heartleaf complex and salicylate derivatives then work on a clean surface. The serum's brightening actives reach skin that has already been properly cleared. Doing the steps out of order, or skipping the oil cleanser, reduces what the serum can do.

Two Brightening Actives Working at Different Points in the Pigmentation Pathway: Niacinamide at 10% blocks melanin transfer between skin cells. Tranexamic Acid at 4% reduces how much melanin gets produced in the first place. For post-breakout marks - which involve both existing discolouration and the ongoing response to inflammation - having both actives in one serum addresses more of the problem than either alone.

The Foam Cleanser Has One of the Most Extensive HA Complexes in a Cleanser Format: Eight forms of Hyaluronic Acid are confirmed in the INCI, including Sodium Hyaluronate Crosspolymer and Sodium Acetylated Hyaluronate alongside standard and hydrolyzed forms. This is unusually thorough hydration support for a rinse-off product - designed to offset any dryness from the salicylate derivatives and leave skin feeling soft rather than stripped after cleansing.

The Cleansing Oil Contains Fragrance - Worth Knowing for Reactive Skin: Fragrance/Parfum is confirmed in the cleansing oil INCI. For the majority of oily and normal skin types this is not an issue. For skin that reacts to added fragrance, this is the relevant piece of information before purchasing the set. The foam cleanser and serum do not contain added Fragrance/Parfum.

Patch Test Before Full-Face Serum Use: The 10% Niacinamide concentration is at the higher end of over-the-counter formulas. The brand and multiple customer reviews recommend patch testing before full-face use, particularly for skin that tends toward reactivity. Starting with once-daily application in the evening and monitoring for a week before going to twice daily is the sensible introduction for anyone new to high-concentration niacinamide.

Double cleanse, then the serum. The logic is simple and the steps are in the right order. The TXA + niacinamide combination is doing the work I've been trying to do with one ingredient at a time. For skin that holds onto marks, having both in one formula is the part that made this worth switching to. 🥹