Supple Preparation Unscented Toner

In 2018, Klairs did something unusual for a beauty brand riding high on a bestseller: they listened to the people who couldn't use it. The original Supple Preparation Toner had already become a K-beauty staple, but a persistent chorus of customers with eczema, rosacea, and contact dermatitis kept asking the same question — can we get this without the essential oils? Klairs stripped out every last drop of lavender and ylang-ylang, and the unscented version promptly overtook the original in sales. Sometimes the best formula is the one that gets out of its own way.

The ingredient list reads like a masterclass in hydration without irritation. Sodium hyaluronate anchors the formula as the primary humectant, but it's not working alone. Betaine, a naturally derived amino acid, reinforces osmotic hydration, while dimethyl sulfone — an ingredient you don't see often in toners — provides anti-inflammatory support that's backed by preliminary research in joint and skin health. The centella asiatica extract brings its well-documented portfolio of madecassoside and asiaticoside, compounds that stimulate collagen production and calm redness. Licorice root extract adds mild brightening via glabridin and anti-inflammatory effects via glycyrrhizin. And then there's beta-glucan, a polysaccharide that functions like a gentler cousin of hyaluronic acid, pulling moisture into the skin while simultaneously calming it.

What's notably absent matters as much as what's present. No denatured alcohol. No fragrance. No essential oils. No sulfates. The preservative system relies on chlorphenesin and 1,2-hexanediol rather than parabens — a choice that makes this formula remarkably tolerant across skin types. The inclusion of copper tripeptide-1 at the tail end of the ingredient list hints at anti-aging ambitions, though at this likely concentration, it's more of a supporting player than a headliner.

The texture is deceptively simple. It's thinner than the original scented version — more watery essence than traditional toner — and absorbs into the skin with almost no residue. This lightweight consistency is precisely why it became the go-to recommendation for the Korean 7-skin method, where you layer multiple applications to build hydration depth. Most toners get sticky or pill by the third layer. This one stays cooperative through seven.

In practice, the toner delivers exactly what it promises: immediate comfort and a noticeable plumping effect. Skin feels genuinely softer within minutes of the first application, not in a cosmetic-film way, but in a way that suggests the hydration is actually penetrating. For reactive skin types, the real magic is what doesn't happen — no tingling, no flushing, no subtle burning that you try to convince yourself is the product 'working.' It simply absorbs and does its job.

The real-world track record speaks volumes. Over 9 million units sold across the Supple Preparation Toner line, with the unscented version now the dominant seller. It won the 2025 Hasaki Award for Most Loved Skincare Product, which in the context of the Asian beauty market's fierce competition is no small feat. User reviews across platforms consistently highlight the same themes: it's hydrating without being heavy, it works on the most sensitive skin imaginable, and it plays well with everything else in the routine.

There are honest limitations worth noting. If you have very dry skin and need a toner that feels like it's delivering a thick, nourishing coat, this might feel too lightweight as a single application. The packaging, while functional, is uninspiring — a basic screw-top on a plastic bottle, which makes dispensing imprecise compared to a pump or dropper. And at around $22 for 180 mL, it's moderately priced for a K-beauty toner, not the budget steal that some competitors offer, though the cost per use is reasonable if you're not doing heavy layering.

The value proposition comes down to trust. This is a toner that has been tested by millions of people with the most reactive, difficult-to-please skin types on the planet, and it keeps passing the test. It's not trying to be a treatment step. It's not loading itself with trendy actives at attention-grabbing concentrations. It's a perfectly executed hydration base that makes everything else in your routine work better — and for sensitive skin, that reliability is worth more than any flashy ingredient list.

Formula

The hero actives that drive this product's performance.

Ingredient	Function	Evidence
Sodium Hyaluronate	Serves as the primary humectant in this lightweight formula, drawing moisture into the upper layers of skin and working in concert with betaine and natto gum to create a hydration reservoir that subsequent skincare layers can build upon.	well-established
Centella Asiatica Extract	Provides anti-inflammatory and barrier-supporting benefits in this toner, calming reactive skin while stimulating glycosaminoglycan synthesis to boost the skin's own hyaluronic acid production — reinforcing the hydrating action of the sodium hyaluronate already in the formula.	well-established
Panthenol	Acts as a humectant and skin-calming agent that strengthens the moisture barrier from within, complementing the external hydration provided by sodium hyaluronate and helping reduce transepidermal water loss in this minimalist formula.	well-established
Glycyrrhiza Glabra (Licorice) Root Extract	Delivers anti-inflammatory and mild brightening properties through glabridin and glycyrrhizin, working alongside centella asiatica to soothe irritation and redness while helping even out skin tone over time.	well-established
Beta-Glucan	A polysaccharide humectant that enhances the soothing profile of this toner, supporting skin barrier repair and calming inflammation — particularly effective for sensitive skin when paired with the centella and licorice extracts in this formula.	promising
Copper Tripeptide-1	A signal peptide included at a supporting level to promote collagen synthesis and wound healing, adding a subtle anti-aging dimension to what is primarily a hydrating and soothing toner formula.	promising

Full INCI List

Water, Butylene Glycol, Dimethyl Sulfone, Betaine, Caprylic/Capric Triglyceride, Natto Gum, Sodium Hyaluronate, Disodium EDTA, Centella Asiatica Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Polyquaternium-51, Chlorphenesin, Tocopheryl Acetate, Carbomer, Panthenol, Arginine, Luffa Cylindrica Fruit/Leaf/Stem Extract, Beta-Glucan, Althaea Rosea Flower Extract, Aloe Barbadensis Leaf Extract, Hydroxyethylcellulose, Portulaca Oleracea Extract, Lysine HCl, Proline, Sodium Ascorbyl Phosphate, Acetyl Methionine, Theanine, Copper Tripeptide-1

Product Flags

✓ Fragrance Free✓ Alcohol Free✗ Oil Free✓ Silicone Free✓ Paraben Free✓ Sulfate Free✓ Cruelty Free✓ Vegan✗ Fungal Acne Safe

Compatibility

Best For

sensitive dry normal

Works For

combination oily

Not Ideal For

Addresses These Conditions

sensitivity dryness dehydration compromised skin barrier dullness

Routine Step

toner

Time of Day

AM & PM

Pregnancy Safe

Yes ✓

Layering Tips

Apply immediately after cleansing on damp skin. Can be layered 2-7 times using the Korean 7-skin method for intense hydration. Pat gently — do not rub. Follow with serum and moisturizer.

Results Timeline

Immediate plumping and hydration on first use. Within 1-2 weeks, skin feels consistently more supple and less reactive. Full barrier-strengthening benefits and reduced redness visible after 4-6 weeks of consistent twice-daily use.

Pairs Well With

hyaluronic acid serumsceramide moisturizersretinol treatmentsvitamin C serumsniacinamide

Sample AM Routine

1. Gentle cleanser
2. Klairs Supple Preparation Unscented Toner
3. Vitamin C serum
4. Moisturizer
5. Sunscreen

Sample PM Routine

1. Oil cleanser
2. Water-based cleanser
3. Klairs Supple Preparation Unscented Toner
4. Treatment serum
5. Moisturizer

Evidence

The Science

The Klairs Supple Preparation Unscented Toner builds its efficacy around several ingredients with well-documented dermatological evidence. Sodium hyaluronate, the sodium salt form of hyaluronic acid, is one of the most thoroughly studied humectants in skincare. Its lower molecular weight compared to native hyaluronic acid allows better penetration into the stratum corneum, where it binds water and improves skin hydration. A systematic review published in the Journal of Clinical and Aesthetic Dermatology (2019) confirmed that topical hyaluronic acid preparations consistently improve skin hydration and elasticity.

Centella asiatica extract contributes four key triterpenoids — madecassoside, asiaticoside, madecassic acid, and asiatic acid — that have been studied extensively for wound healing and anti-inflammatory activity. A study published in the International Journal of Molecular Sciences (2016) demonstrated that centella asiatica promotes collagen type I synthesis and stimulates glycosaminoglycan production, which supports the skin's own hyaluronic acid levels. This creates a synergistic effect with the exogenous sodium hyaluronate in the formula.

Glycyrrhiza glabra (licorice) root extract contains glabridin, which has been shown to inhibit tyrosinase activity and reduce melanin production. Research published in the Journal of Agricultural and Food Chemistry (2003) confirmed glabridin's anti-inflammatory properties through inhibition of superoxide anion production and cyclooxygenase activity. In this formula, it works alongside centella to create a dual-action anti-inflammatory approach.

Beta-glucan, derived from oat or yeast sources, functions as both a humectant and an immunomodulator. A study in the Journal of Drugs in Dermatology (2005) found that topical beta-glucan improved skin hydration and reduced the appearance of fine lines. Its ability to stimulate macrophage activity supports skin repair processes, complementing the wound-healing properties of the centella extract.

The inclusion of panthenol (pro-vitamin B5) at an estimated 0.35-0.80% concentration adds barrier-strengthening capability. Research has shown that panthenol penetrates the stratum corneum and converts to pantothenic acid, which is essential for coenzyme A synthesis and lipid barrier function.

References

1. Efficacy of Topical Hyaluronic Acid in Skin Care: A Systematic Review — Journal of Clinical and Aesthetic Dermatology (2019)
2. Centella asiatica in cosmetology — International Journal of Molecular Sciences (2016)
3. Anti-inflammatory and anti-melanogenic activities of glabridin — Journal of Agricultural and Food Chemistry (2003)

Dermatologist Perspective

Dermatologists frequently recommend the Klairs Supple Preparation Unscented Toner as a hydrating step for patients with compromised barriers, rosacea, or contact dermatitis. Board-certified dermatologists note that its complete absence of fragrance, essential oils, and denatured alcohol makes it one of the safest hydrating toners available for reactive skin. The combination of centella asiatica and licorice root provides anti-inflammatory benefits that dermatologists recognize as clinically meaningful, even at cosmetic concentrations. For patients using prescription retinoids or post-procedure skin, this toner is commonly suggested as a buffer layer that provides hydration without introducing new irritants. Dermatologists also appreciate that the formula avoids common sensitizers while still delivering effective humectants — a balance that many hydrating toners fail to achieve.

Guidance

How to Use

After cleansing, pour a quarter-sized amount into your palms. Press gently into slightly damp skin — never rub or swipe. For the 7-skin method, apply 3-7 thin layers, allowing each to partially absorb before the next. Follow with serum, treatment, and moisturizer. Can be used both morning and evening. For extra soothing on irritated or sunburned skin, soak a cotton pad and use as a compress for 5-10 minutes.

Value Assessment

At approximately $22 for 180 mL, this toner sits in the mid-range for K-beauty hydrating toners. The price-to-quality ratio is favorable when considering the thoughtful formulation and the complete absence of filler ingredients or unnecessary additives. A 30 mL travel size is also available for those wanting to trial before committing. If used once daily as a single layer, the full-size bottle lasts 3-4 months, bringing the daily cost to roughly $0.18-0.24. Heavy 7-skin method users will go through it faster, which does add up. For what it delivers — reliable, irritant-free hydration backed by years of proven tolerability — the pricing is fair, especially for a brand with Klairs' track record of consistent quality.

Who Should Buy

Anyone with sensitive, reactive, or easily irritated skin who needs a hydrating toner that won't trigger redness or stinging. It's ideal for rosacea-prone skin, post-procedure recovery, and anyone building a minimalist K-beauty routine around gentleness.

Who Should Skip

Those seeking a treatment toner with high concentrations of active ingredients like glycolic acid, niacinamide, or vitamin C should look elsewhere. If you want a rich, viscous toner that feels like a mini-moisturizer in one step, this lightweight formula may leave you wanting more.

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Details

Texture

Lightweight, slightly viscous liquid — thinner than the original scented version. Feels like a watery essence that absorbs quickly without residue.

Scent

Completely unscented — no essential oils or fragrance additives of any kind.

Packaging

Tall, slim translucent plastic bottle with a screw-top cap. Simple and functional, though lacking a pump or dropper for controlled dispensing.

Finish

lightweightdewyfast-absorbing

What to Expect on First Use

Immediate comfort and hydration on first application. No tingling, stinging, or adjustment period — even freshly compromised or post-procedure skin tolerates this well. Skin feels plumper within minutes.

How Long It Lasts

3-4 months with twice-daily use on face, less if using the 7-skin layering method regularly.

Period After Opening

12 months

Best Season

All Year

Certifications

PETA Cruelty-FreeVegan Society Certified

Background

The original Klairs Supple Preparation Toner was already a K-beauty cult favorite, but customers with extreme sensitivity kept requesting a version without essential oils. Klairs listened, reformulating the toner in 2018 to strip out every potential irritant while keeping the hydrating backbone intact — and the unscented version quickly surpassed the original in popularity.

About Klairs Established Brand (5–20 years)

Dear, Klairs was founded in South Korea in 2010 with a philosophy of 'simple but enough.' The brand is PETA-certified cruelty-free and Vegan Society approved, and has built a strong global following through its focus on gentle, fragrance-free formulations for sensitive skin. Over 9 million units of their Supple Preparation Toner line have been sold worldwide.

Brand founded: 2010 · Product launched: 2018

Myth vs. Reality

Myth

The unscented version is less effective than the original because it has fewer ingredients.

Reality

The core hydrating and soothing actives — sodium hyaluronate, centella, licorice root, panthenol, and beta-glucan — are identical between versions. Removing essential oils eliminated potential irritants without reducing efficacy.

Myth

Toners are unnecessary if you already use a hydrating serum.

Reality

This toner serves a distinct prep function: it rebalances skin pH after cleansing and creates a hydration base that helps subsequent products absorb more effectively. It's not redundant with a serum — it's foundational to the routine.

FAQ

Common Praise

"Incredibly hydrating without heaviness"

"Perfect for sensitive and reactive skin"

"Works beautifully with the 7-skin method"

"Lightweight and absorbs quickly"

"No irritation or stinging on compromised skin"

Common Complaints

"Thin consistency may not feel 'enough' for very dry skin"

"Packaging is basic for the price point"

"Can feel slightly sticky if over-layered"

"Some prefer the original scented version's thicker texture"

Notable Endorsements

Won 2025 Hasaki Award for No. 1 Most Loved Skincare ProductConsistently ranked among top K-beauty toners by Soko Glam and Wishtrend

Appears In

best toner for sensitive skin best fragrance free toner best k beauty toner best toner for rosacea best hydrating toner for dry skin

Related Conditions

sensitivity dehydration rosacea dryness compromised skin barrier

Related Ingredients

hyaluronic acid centella asiatica panthenol licorice root beta glucan