Fundamental Water Gel Cream

For about a decade, if you mentioned Klairs in a sensitive-skin forum, somebody in the comments would recommend the Rich Moist Soothing Cream or the Supple Preparation lotion. Those products built the brand's reputation among dry and sensitive users who wanted a fragrance-free formula with real barrier support, and they earned their cult status honestly. The problem was that nearly every Klairs moisturizer was too rich for combination or oily skin, and the brand's combination-skin fans kept quietly asking for a version of the Klairs formulation philosophy that didn't feel like they were rubbing a facial butter onto a t-zone that was already producing plenty of its own oils. The Fundamental Water Gel Cream is Klairs' answer to that decade-long request, and understanding the formula starts with the first line of the INCI.

Most gel creams start with water. This one starts with camellia sinensis leaf water — a green tea infusion that replaces the plain water base and puts green tea polyphenols into the formula at concentrations you'd usually only see in dedicated green tea serums. That substitution is more expensive for Klairs than using tap-filtered water, and it signals that the brand is serious about the oil-regulating, antioxidant positioning of the product rather than just slapping green tea on the marketing copy. After the green tea water, the formula moves through butylene glycol, glycerin, and standard water, building a humectant-heavy base that binds water without adding weight.

The interesting chemistry happens in the middle of the list. Panthenol sits high, providing the soothing backbone that makes this moisturizer gentle enough for sensitive combination skin. Phytosphingosine and caproyl sphingosine — two ceramide precursors, not pre-formed ceramides — show up a little further down. This is a more subtle barrier-repair approach than dumping ceramide NP into an occlusive base; the precursors feed into the skin's own ceramide synthesis pathway rather than depositing pre-made lipids on the surface. For combination skin that needs barrier support without the occlusive load of a traditional ceramide cream, this is actually a smart formulation choice. Glyceryl glucoside adds an unusual humectant with some research on aquaporin upregulation — the water channels that move hydration across cell membranes — which theoretically supports a slower, more sustained hydration effect than glycerin alone. Trehalose and hydrolyzed hyaluronic acid fill in the water-binding picture.

The botanical extract list is a greatest-hits of K-beauty soothing actives: centella asiatica, rosemary leaf, laminaria japonica, artemisia, hibiscus esculentus. None of these are doing miraculous work individually, but together they layer antioxidant and calming support onto the humectant base without adding potential irritants — no fragrance, no alcohol, no essential oils. The silicone content is relatively low, mainly cyclohexasiloxane for slip and dry-down, which is why the gel cream doesn't leave a synthetic film after absorption.

On use, the texture is where the formula earns its name. It's genuinely a water-gel that breaks into a cool liquid on contact with skin, spreads easily with very little friction, and absorbs fully within about a minute. The cooling effect during application is noticeable and particularly welcome in summer or post-workout. Under sunscreen and makeup, it creates a smooth base that doesn't pill, ball up, or interfere with foundation application — a failure point that trips up a lot of gel creams in this category. Over the first couple of weeks of daily use, the oil regulation effect becomes noticeable; skin stays matte-to-satin through the day rather than getting progressively shinier by afternoon, which is the usual pattern for dehydrated oily skin that's been undertreated.

Where does the formula run into limits? Dry skin won't be happy with it as a standalone moisturizer. The weight is calibrated specifically for combination and oilier users, and dry skin will feel underserved after about an hour, reaching for a second layer or switching to a richer option. It's also not fungal-acne safe despite the light feel — there's sunflower oil and fatty alcohols lower on the list, and users with malassezia folliculitis should skip it. The 70ml jar is small for the price tier; at $28, the per-milliliter cost is higher than competitors like Pyunkang Yul Moisture Cream or Beauty of Joseon Dynasty Cream, both of which offer more volume for less money. What you're paying for is the specific green tea water base and the ceramide precursor approach — a more sophisticated combination-skin formula than most budget alternatives offer.

Brand-heritage honesty: Klairs has been operating since 2010, which gives it a solid fifteen-year track record in sensitive-skin formulations. The brand has built its reputation steadily through user recommendations rather than celebrity marketing or viral moments, and the Fundamental line represents a thoughtful extension of that reputation into territory the original Supple Preparation range didn't cover. This isn't a new brand testing the waters — it's an established K-beauty house extending its formulation philosophy to a wider audience, and the specific ingredient choices in this gel cream reflect that depth of experience.

Buy it if you have combination or oily skin that's also dehydrated, you value fragrance-free formulas with real active content, and you want a gel cream that layers cleanly under sunscreen. Skip it if you have dry skin, if price-per-milliliter is your primary metric, or if fungal acne is a concern. For the right user, it's one of the better combination-skin gel creams in the K-beauty mid-tier — for the wrong user, the richer Klairs options or a cheaper Korean gel cream will serve you better.

Formula

The Science

The ingredient choices in this gel cream reflect some of the more interesting recent research threads in combination-skin formulation. Green tea polyphenols — specifically EGCG (epigallocatechin gallate) — have published evidence for antioxidant activity in skin and potential sebum-regulating effects in oily and acne-prone users. Substituting green tea leaf water for plain water at the base level delivers those polyphenols at usable concentrations throughout the formula, though the exact concentration isn't disclosed.

Phytosphingosine and caproyl sphingosine are ceramide precursors rather than pre-formed ceramides, and the distinction matters. Pre-formed ceramide deposition onto skin is the mechanism behind products like CeraVe and Epiduo, and it works well for acute barrier repair. Precursor-based approaches feed into the skin's endogenous ceramide synthesis pathway and theoretically support longer-term barrier resilience without requiring occlusive delivery systems. The research on phytosphingosine is narrower than on pre-formed ceramides but supportive — it has shown effects on keratinocyte differentiation and antimicrobial peptide expression in published work.

Glyceryl glucoside has a smaller but interesting literature around aquaporin-3 upregulation. Aquaporin-3 is the water channel protein that moves glycerol and water across keratinocyte membranes, and upregulating it has been proposed as a mechanism for longer-lasting skin hydration than simple surface water binding. Work on glyceryl glucoside in cosmetic formulations has shown measurable effects on skin hydration parameters over weeks of use. Trehalose has separate research on bioprotection and water binding during dehydration stress — its inclusion here with the HA is a thoughtful pairing for combination skin exposed to air conditioning, travel, or seasonal dryness. The panthenol and centella asiatica story is well-established and doesn't require extensive repetition here.

Dermatologist Perspective

Dermatologists treating combination or oily skin often recommend gel creams as the daily moisturizer step because they provide hydration without adding occlusive load to already-sebum-rich areas. Board-certified dermatologists note that combination skin benefits from consistent barrier support even when oil production feels high — undertreated dehydration can actually worsen oil production over time. This formula's fragrance-free profile, ceramide precursor content, and light texture make it a reasonable fit for patients who struggle to find a moisturizer that works with both their oily t-zone and dehydrated cheeks. Patients with active fungal acne or malassezia folliculitis would typically be steered toward oil-free alternatives, and patients with severely dry skin would receive a richer recommendation.

Guidance

Dear, Klairs launched the Fundamental line in 2020 as a counterpart to the richer Supple Preparation range. The brand had been primarily recommended for dry and sensitive skin for a decade, but users with combination and oily complexions kept asking for a lighter option that shared the sensitive-skin DNA. This gel cream was the direct answer, built around green tea leaf water instead of plain water to signal the oil-regulating positioning.

About Dear, Klairs Established Brand (5–20 years)

Dear, Klairs has been operating since 2010 under parent company Wishtrend, building its reputation specifically on sensitive-skin and dehydrated-skin formulations. The Fundamental line represents the brand's more recent effort to target combination and slightly oilier skin types that found the Supple Preparation line too rich.

Brand founded: 2010 · Product launched: 2020

Myth vs. Reality

Myth

Oily skin doesn't need moisturizer.

Reality

Oily skin still loses water through the stratum corneum and often overproduces sebum in response to dehydration. A well-chosen lightweight moisturizer like this one can actually reduce oil production over weeks by signaling that skin is hydrated.

Myth

Gel creams can't provide real barrier support.

Reality

Phytosphingosine and caproyl sphingosine in this formula support the skin's own ceramide synthesis — arguably a more sustainable barrier approach than simply depositing pre-formed ceramides on the surface, and one that works in a gel texture without needing heavy occlusives.

FAQ

Common Praise

"Lightweight but hydrating"

"Works for oily skin"

"No pilling under makeup"

"Fragrance-free"

"Cooling finish"

Common Complaints

"Too light for dry skin"

"Small 70ml tub"

"Price vs alternatives"

Notable Endorsements

Wishtrend editor pickr/AsianBeauty rotation recommendation

Appears In

best gel cream for combination skin best k beauty moisturizer oily skin best lightweight moisturizer best green tea moisturizer

Related Conditions

dehydration oiliness large pores

Related Ingredients

green tea glycerin panthenol phytosphingosine hyaluronic acid trehalose