Oil-Free Ultra-Moisturizing Lotion
Featherweight Oil Control
Verified reviewer
Pros & cons.
- +70% birch sap base provides anti-inflammatory benefits from the vehicle itself, not just the actives
- +Incredibly lightweight texture absorbs in seconds and leaves zero greasy residue
- +Pump dispenser provides precise, hygienic product dispensing
- +Effectively hydrates oily and combination skin without contributing to shine
- +Panthenol, allantoin, and sodium hyaluronate provide proven soothing and moisture retention
- +Works beautifully as a primer-like base under sunscreen and makeup
- −Contains lemon peel oil and tea tree oil — potential irritants that limit use on sensitive skin
- −Not moisturizing enough for dry skin as a standalone product
- −Dimethicone (4th ingredient) may aggravate closed comedones in susceptible users
- −Original formulation discontinued — the 'with Birch Sap' reformulation is the superior current option
- −100ml size depletes quickly if used on both face and body
The full review.
The COSRX Oil-Free Ultra-Moisturizing Lotion launched in 2016 with a specific premise: replace water in a moisturizer with an active ingredient. Birch sap — the nutrient-rich liquid from Betula platyphylla japonica trees — serves this purpose. At 70% of the formula, it is the foundation, not a garnish.
Birch sap contains minerals, amino acids, and organic acids that purified water lacks. Research supports traditional Korean and Nordic medicine claims: a 2023 clinical study shows birch juice reduces skin nerve sensitivity, and a 2025 study confirms it reduces inflammatory cytokines in cellular models. Using an anti-inflammatory base gives this product an advantage over formulas using inert water.
The original formula paired this base with a functional but contradictory ingredient set. Glycerin, panthenol, sodium hyaluronate, and allantoin provided the hydrating and soothing backbone — excellent choices for an oil-free moisturizer for oily and combination skin. Dimethicone, listed fourth, adds the occlusive layer oil-free formulas need to prevent evaporation. Betaine helps with osmotic moisture retention.
Then there were the essential oils. Lemon peel oil and tea tree leaf oil were included for scent and antibacterial benefits. In an oil-free moisturizer for acne-prone skin — which often includes sensitive, reactive complexions — this choice is questionable. Tea tree has antimicrobial properties, but its concentration in a leave-on moisturizer, plus the phototoxicity risk of lemon peel oil, creates an irritation risk that undermines the formula’s gentle profile.
COSRX eventually addressed this. The product was reformulated as the ‘with Birch Sap’ version, replacing essential oils with 4-terpineol — an isolated component of tea tree oil that provides antimicrobial activity without the irritation of full essential oils. The reformulation was the right move.
The original formula still succeeds in some areas. The texture is remarkable. This moisturizer vanishes on contact — it starts as a gel-cream, turns watery when spread, and absorbs within seconds, leaving no sensation on the skin. For oily skin types who dislike the heavy feeling of traditional moisturizers, this is a benefit. You get hydrated skin without a perceptible layer.
The pump dispenser is a smart design choice. Two pumps cover the full face, and the mechanism prevents over-dispensing common with squeeze tubes or jars. The slim bottle is travel-friendly and fits on any skincare shelf.
The COSRX Oil-Free Ultra-Moisturizing Lotion delivers on its promise: oil-free hydration without adding shine. Oily and combination skin types report balanced skin — hydrated without the midday grease caused by heavier moisturizers. The birch sap and allantoin combination soothes skin, especially post-treatment or during mild irritation.
The limitation is clear: this is not enough moisturizer for dry skin. In cold, dry climates or for those with dry skin, this lotion is insufficient. It requires a heavier cream layered over it, or it must be used as a hydrating prep step. For its target audience — oily and combination skin, especially in warm or humid conditions — it works well alone.
At $25 for 100ml, the price is moderate. K-beauty retailers often sell it for $16-19, offering good value for a birch-sap-based formula. A 20ml mini size is available for testing. The 100ml pump bottle lasts two to three months with twice-daily use.
The COSRX Oil-Free Ultra-Moisturizing Lotion — in either the original or reformulated version — shows that lightweight, oil-free moisturizers can be more than watered-down cream. The birch sap base is innovative, and the hydrating ingredients work for oily skin. If shopping now, choose the reformulated Birch Sap version to avoid the problematic essential oils. The original formula earned its place in K-beauty by showing that a moisturizer’s base ingredient can be an active.
Ingredient analysis.
Full INCI list
Betula Platyphylla Japonica Juice, Butylene Glycol, Glycerin, Dimethicone, Betaine, Cetearyl Alcohol, 1,2-Hexanediol, Cetearyl Olivate, Sorbitan Olivate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Ethylhexylglycerin, Citrus Medica Limonum (Lemon) Peel Oil, Allantoin, Panthenol, Xanthan Gum, Sodium Lactate, Sodium Hyaluronate, Ethyl Hexanediol, Melaleuca Alternifolia (Tea Tree) Leaf Oil
Skin match.
The science.
The Science
70% Betula platyphylla japonica juice (birch sap) forms the formula's foundation. This makes the vehicle a bioactive ingredient instead of inert purified water. Birch sap contains minerals (calcium, magnesium, potassium), amino acids, organic acids (malic acid, succinic acid), and polyphenolic compounds. A 2023 clinical study in PMC shows birch juice spray reduces skin sensory nerve sensitivity after 2-4 weeks of topical use, proving the sap's soothing properties. A 2025 study in MDPI's Cosmetics journal found birch sap reduces inflammatory cytokines (IL-1β, IL-6, IL-8) and attenuates MAPK and NF-κB phosphorylation pathways in cellular and animal models, confirming its anti-inflammatory mechanism at the molecular level.
Extensive research supports Panthenol in this formula. Proksch et al.'s 2017 review documented 70 years of evidence for dexpanthenol's moisturizing, barrier-enhancing, and anti-inflammatory properties. In an oil-free formula using humectant rather than occlusive hydration, Panthenol's ability to reduce transepidermal water loss is valuable.
Sodium hyaluronate provides humectant hydration at the skin surface, while betaine — a naturally occurring osmolyte — helps cells maintain water content under osmotic stress. Together with glycerin, these humectants create a multi-pathway hydration system that replaces occlusive oils. Dimethicone provides the occlusive component, creating a breathable silicone film that prevents excessive moisture evaporation without the heaviness of traditional oil-based occlusives.
References
- Clinical study on birch juice spray reducing skin sensory nerve sensitivity — PMC (2023)
- Betula platyphylla var. japonica bark extract inhibits atopic dermatitis-like skin lesions — PubMed (2008)
- Topical use of dexpanthenol: a 70th anniversary article — The Journal of Dermatological Treatment (2017)
Dermatologist Perspective
Dermatologists often recommend oil-free moisturizers for oily, acne-prone skin. Using birch sap as a bioactive base fits the trend toward functional cosmetic vehicles. Board-certified dermatologists would note the original formula's lemon peel oil — a known phototoxic ingredient — was a poor choice for a product likely worn during the day. The reformulated version fixes this. Dermatologists value the panthenol and allantoin for their proven barrier-supporting properties and recommend this lotion as a lightweight hydration step for patients who avoid oil-based products.
Where it fits in your routine.
Cleanse, tone, and apply serums first, then dispense 1-2 pumps onto the face and neck. Pat gently to absorb; the lightweight texture does not require rubbing. Apply sunscreen in the AM. In the PM, use this as the final step for oily skin, or layer a heavier cream on top for dry skin. Use morning and evening for consistent hydration without oiliness.
At $25 for 100ml, this lotion is reasonably priced for a birch-sap-based formula. The value increases at K-beauty retailer pricing ($16-19), making it an accessible daily moisturizer for oily skin. A 20ml mini at $6-8 lowers the risk for first-time buyers. Using two pumps twice daily, the standard bottle lasts 2-3 months, costing about $0.30-0.40 per day. COSRX's track record and the product's decade-long review history justify the price.
Oily and combination skin types need lightweight, non-greasy hydration that avoids midday shine or clogged pores. It works well for warm-weather routines, under sunscreen and makeup, or for those who find traditional moisturizers too heavy. It also suits acne-prone skin seeking oil-free options.
People with sensitive skin or essential oil sensitivities should skip this original formula and use the reformulated Birch Sap version instead. This formula is insufficient as a standalone moisturizer for dry skin types. Anyone concerned about dimethicone and closed comedones should patch test first.
Product details.
Lightweight gel-cream texture turns watery when spread. It feels silky, absorbs fast, and leaves a barely-there feel on skin.
Lemon peel oil and tea tree leaf oil create a noticeable herbal scent. It is detectable but not overpowering.
Tall, slim white plastic bottle with a pump dispenser. Minimalist COSRX branding. The pump dispenses precisely and hygienically.
This lotion disappears on contact. The watery-gel texture feels like nothing on skin, which may surprise users of thicker moisturizers. Skin feels soft and lightly hydrated with no greasy residue. The essential oils' herbal scent is noticeable but fades within minutes.
2-3 months with twice-daily facial use
12 months
spring summer
The backstory.
Launched in 2016 as COSRX's answer to the oily-skin moisturizer gap, this lotion became a staple for people who needed hydration without oil. The original formula's essential oils proved divisive — loved by some for the herbal scent, criticized by others for the irritation risk. COSRX eventually reformulated it as the 'with Birch Sap' version, removing the lemon and tea tree oils in favor of isolated 4-terpineol.
About COSRX
Established Brand (5–20 years)COSRX launched in South Korea in 2013 and is a trusted K-beauty brand. The 'with Birch Sap' version replaces this product and removes the essential oils. The original version had a loyal following before the reformulation.
Common myths.
Oil-free moisturizers do not provide real hydration; oils are required to moisturize.
This lotion uses glycerin, sodium hyaluronate, panthenol, and betaine. These humectants attract and hold water without oils. Dimethicone provides the occlusive layer to prevent moisture loss. Oil-free formulations hydrate effectively; they use humectant and emollient pathways instead of occlusive oils.
Birch sap is just fancy water; it has no special effects.
Birch sap has minerals, amino acids, and bioactive compounds that standard water lacks. Research shows its anti-inflammatory effects — a 2025 study showed birch sap reduced inflammatory cytokines, and a 2023 clinical study showed it reduces skin nerve sensitivity. It is more than just water in a different bottle.
FAQ.
Is the original COSRX Oil-Free Ultra-Moisturizing Lotion still available?
The original formulation with lemon peel oil and tea tree leaf oil is discontinued. The 'with Birch Sap' version replaces it, removing the essential oils to use 4-terpineol instead. The new version uses the same concept — 70% birch sap, oil-free, lightweight — but has a cleaner, fragrance-free ingredient profile.
Is this moisturizer enough for dry skin?
This lotion targets oily and combination skin. For dry skin, it lacks the moisture needed as a standalone moisturizer, particularly in cold or arid climates. Use it as a lightweight hydrating layer before a thicker cream, but other primary moisturizers work better for dry skin.
Does this lotion contain silicone?
Yes — dimethicone is the fourth ingredient. It forms a smooth, protective layer that locks in moisture without adding oil. Most users tolerate dimethicone well, but those prone to closed comedones or who prefer silicone-free products may want alternatives.
Can I use this as a body lotion?
Many users use this as a lightweight body lotion, especially in warm weather. But the 100ml size runs out fast on the body. The reformulated 'with Birch Sap' version works better for body use because it has a cleaner ingredient profile.
Why did COSRX reformulate this product?
COSRX removed lemon peel oil and tea tree leaf oil to suit more skin types, including sensitive skin. Both are potential irritants. This reformulation shows COSRX continues to remove unnecessary irritants from their formulations.
What the community says.
"Extremely lightweight and non-greasy — absorbs almost instantly"
"Keeps oily skin hydrated without adding shine or heaviness"
"Works perfectly as a makeup base without pilling"
"Calms and soothes irritated skin with birch sap base"
"Pump dispenser is hygienic and precise"
"Good value when purchased from K-beauty retailers at $16-19"
"Not moisturizing enough for dry skin, especially in winter months"
"Contains lemon peel oil and tea tree oil that can irritate sensitive skin"
"Dimethicone (4th ingredient) may aggravate closed comedones in some users"
"100ml bottle runs out relatively quickly with twice-daily face and body use"
"Original formula discontinued — now only available as the reformulated Birch Sap version"
