1st on the list, which puts it at an estimated 30–80% of the formula.
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
Heimish
RX Hyaluronic Acid 2% Hydrating Serum
face serum
Heimish
face serum
Added Last edited
Fit by skin type
General, ingredient-based — not your personalized match.
See how this fits your skin
Take the skin test and I'll show you how suitable this product is for you.
Take the skin testQuench your skin’s thirst with the Heimish RX Hyaluronic Acid 2% Hydrating Serum, a powerhouse formula designed to deliver multi-layered hydration for a plump, glowing complexion. Infused with eight forms of hyaluronic acid, this lightweight yet deeply moisturizing serum penetrates different layers of the skin to provide instant and long-lasting hydration. Panthenol and Betaine work together to strengthen the skin barrier, locking in moisture for a soft, smooth finish. With its highly concentrated, essence-like texture, this non-tacky serum glides effortlessly onto the skin, absorbing quickly to leave you with a fresh, dewy glow.
RX Hyaluronic Acid 2% Hydrating Serum is a watery-light serum from Heimish, a brand based in Korea. The formula is built mainly around hydration. The ingredient list runs to 18 ingredients, each broken down in full below.
By its ingredient list the formula reads as very light — essentially a water-and-humectant base with little emollient weight. With almost no emollient load it should absorb quickly and finish close to matte. Hydration is handled by Propanediol, Butylene Glycol and Sodium Hyaluronate, humectants that pull water into the upper layers of skin rather than sealing it there.
Hydration: Very high. Ingredients that pull and hold water in the upper layers of skin, and here that comes from Propanediol, Butylene Glycol, Sodium Hyaluronate and Panthenol.
Soothing: Moderate. Ingredients aimed at visible redness and reactivity, and here that comes from Panthenol, Ectoin, Sodium Hyaluronate and Sodium Hyaluronate Crosspolymer.
On richness alone it suits Combination (oily) and Oily skin best, and is the least natural fit for Dry, Combination (dry) and Balanced skin. Nothing in the list is flagged as a common irritant, which is a reasonable starting point for reactive skin — though a patch test is still the only way to know.
The formula contributes little or nothing on antioxidant protection, oil control, brightening and tone and cell renewal. That is not a fault — most products are not meant to do everything — but if one of those is your priority, this is not the product that will address it.
Reading the full list, the formula is essential-oil-free, no drying alcohol, paraben-free, silicone-free, microplastic-free and sulfate-free. Those claims come from the ingredient list itself, not from the packaging. It does contain fragrance, worth knowing if your skin reacts to any of them.
It can be used morning and evening. In a routine it goes after toner, before moisturiser. Apply to clean, dry skin and give it a minute to absorb before the next layer. Introduce one new treatment at a time so you can identify what is working.
This summary is generated from the product's ingredient list. It is not a review, it is not the brand's own marketing claims, and it does not replace advice from a dermatologist.
Drawn purely from the ingredient list
Scored on how rich or light the formula reads from its INCI order.
No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.
Based on the curated benefits documented for this product's ingredients.
Attracts and locks in moisture to keep skin plump and dewy
Boosts collagen and cell turnover to reduce fine lines and wrinkles
Calms redness, irritation, and inflammation for sensitive skin
Brightens and balances complexion for a more uniform appearance
None of the ingredients in this formula are associated with these benefits. This is not unusual, as most products are designed to target a limited number of concerns.
The actives, UV filters and benefit-carrying ingredients in this formula, in the order they are listed.
1st on the list, which puts it at an estimated 30–80% of the formula.
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
2nd on the list, which puts it at an estimated 5–20% of the formula.
1,3-dihydroxypropane
3rd on the list, which puts it at an estimated 5–20% of the formula.
Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)
5th on the list, which puts it at an estimated 2–10% of the formula.
Hyaluronic acid, sodium, salt
6th on the list, which puts it at an estimated 2–10% of the formula.
Butanamide, 2,4-dihydroxy-N-(3-hydroxypropyl)-3,3-dimethyl-, (2R)-; dl-Panthenol
8th on the list, which puts it at an estimated 1–5% of the formula.
Methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide, inner salt
10th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
4-Pyrimidinecarboxylic Acid, 1,4,5,6,-Tetrahydro-2-Methyl-, (4S)-
12th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hydrolyzed Hyaluronic Acid is the hydrolysate of Hyaluronic Acid derived by acid, enzyme or other method of hydrolysis
13th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Sodium Acetylhyaluronate
14th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hyaluronic acid
15th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hyaluronic acid, sodium salt, polymer with 1,1'-sulfonylbis[ethene]
16th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hydrolyzed Sodium Hyaluronate is the hydrolysate of Sodium Hyaluronate derived by acid, enzyme or other method of hydrolysis
Each axis is scored from the ingredients present and how high up the list they sit.
Ingredients that pull and hold water in the upper layers of skin
Lipids and repair signals that support skin barrier integrity
Ingredients that mop up free radicals from UV and pollution
Ingredients that moderate sebum or absorb shine
Ingredients that act on uneven tone and post-inflammatory marks
Ingredients aimed at visible redness and reactivity
Retinoids, acids and enzymes that speed surface turnover
Peptides and growth factors that signal for collagen support
"Active" here means an ingredient carrying a recorded active type or a recognised UV filter.
Solvents, emollients, texture agents and preservatives — the formula that carries the actives.
Read from the full ingredient list. A brand's own claim may differ.
Parfum
Judged by the same curated rules our routine checker uses. It reads the ingredients, not the label.
Nothing in this formula belongs to a group our rules can put in conflict, so it layers freely. Order still matters — thinnest texture first.
This product is the "Treat" step.
Flags to check, not verdicts. None of this is medical advice — if you are pregnant, breastfeeding or treating a skin condition, ask a doctor.
Most ingredients do more than one job, so these counts add up to more than the 18 ingredients on the label.
Changes how skin behaves rather than how it feels
Draws water into the upper layers of skin
Dissolves and carries everything else
Sets the thickness, spread and stability of the formula
Changes how the product smells or looks
Binds trace metals that would otherwise spoil the formula
Forms a film that slows water loss
Lifts oil and dirt, or holds oil and water together
Every ingredient on the label, in order, with what it does and roughly how much of it is likely to be there.
1st on the list, which puts it at an estimated 30–80% of the formula.
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
2nd on the list, which puts it at an estimated 5–20% of the formula.
1,3-dihydroxypropane
3rd on the list, which puts it at an estimated 5–20% of the formula.
Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)
4th on the list, which puts it at an estimated 2–10% of the formula.
5th on the list, which puts it at an estimated 2–10% of the formula.
Hyaluronic acid, sodium, salt
6th on the list, which puts it at an estimated 2–10% of the formula.
Butanamide, 2,4-dihydroxy-N-(3-hydroxypropyl)-3,3-dimethyl-, (2R)-; dl-Panthenol
7th on the list, which puts it at an estimated 1–5% of the formula.
Poly(oxy-1,2-ethanediyl), .alpha.,.alpha.',.alpha.''-1,2,3-propanetriyltris-.omega.-hydroxy-, esters with 5-oxo-L-proline and isooctadecanoic acid (25 mol EO average molar ratio)
8th on the list, which puts it at an estimated 1–5% of the formula.
Methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide, inner salt
9th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Disodium dihydrogen ethylenediaminetetraacetate
10th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
4-Pyrimidinecarboxylic Acid, 1,4,5,6,-Tetrahydro-2-Methyl-, (4S)-
11th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hyaluronic acid, 2-hydroxy-3-(N,N,N-trimethylammonio)propyl chloride derivatives
12th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hydrolyzed Hyaluronic Acid is the hydrolysate of Hyaluronic Acid derived by acid, enzyme or other method of hydrolysis
13th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Sodium Acetylhyaluronate
14th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hyaluronic acid
15th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hyaluronic acid, sodium salt, polymer with 1,1'-sulfonylbis[ethene]
16th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hydrolyzed Sodium Hyaluronate is the hydrolysate of Sodium Hyaluronate derived by acid, enzyme or other method of hydrolysis
17th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Hyaluronic acid, potassium salt
18th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Parfum is a term for ingredient labelling used to identify that a product contains a material or a combination of materials normally added to a cosmetic to produce or to mask a particular odour. According to Article 19 of the Cosmetics Regulation, 'Perfume and aromatic compositions and their raw materials shall be referred to by the terms ‘parfum’ or ‘aroma’. '
Products in the same category that share this formula's distinguishing ingredients.
COSRX
Shares 12 key ingredients with RX Hyaluronic Acid 2% Hydrating Serum: Water, Butylene Glycol, Betaine, Panthenol, Propanediol
Arencia
Shares 12 key ingredients with RX Hyaluronic Acid 2% Hydrating Serum: Water, Propanediol, Sodium Hyaluronate, Potassium Hyaluronate, Sodium Hyaluronate Crosspolymer
Arencia
Shares 12 key ingredients with RX Hyaluronic Acid 2% Hydrating Serum: Water, Butylene Glycol, Propanediol, Sodium Hyaluronate, Potassium Hyaluronate
Eqqualberry
Shares 12 key ingredients with RX Hyaluronic Acid 2% Hydrating Serum: Water, Butylene Glycol, Betaine, Ectoin, Sodium Hyaluronate
Eqqualberry
Shares 11 key ingredients with RX Hyaluronic Acid 2% Hydrating Serum: Water, Butylene Glycol, Betaine, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid
Eqqualberry
Shares 11 key ingredients with RX Hyaluronic Acid 2% Hydrating Serum: Water, Butylene Glycol, Betaine, Panthenol, Sodium Hyaluronate
WATER, PROPANEDIOL, BUTYLENE GLYCOL, 1,2-HEXANEDIOL, SODIUM HYALURONATE, PANTHENOL, GLYCERETH-25 PCA ISOSTEARATE, BETAINE, DISODIUM EDTA, ECTOIN, HYDROXYPROPYLTRIMONIUM HYALURONATE, HYDROLYZED HYALURONIC ACID, SODIUM ACETYLATED HYALURONATE, HYALURONIC ACID, SODIUM HYALURONATE CROSSPOLYMER, HYDROLYZED SODIUM HYALURONATE, POTASSIUM HYALURONATE, PARFUM.
SODIUM HYALURONATE, PANTHENOL, HYDROLYZED HYALURONIC ACID, SODIUM ACETYLATED HYALURONATE, HYALURONIC ACID, SODIUM HYALURONATE CROSSPOLYMER, POTASSIUM HYALURONATE.
Apply an appropriate amount to the face morning and night, avoiding the eye and mouth areas. Gently massage until fully absorbed.
Judged on how rich the formula reads from its ingredient list, it suits Combination (oily), Oily skin best. It is the least natural fit for Dry, Combination (dry), Balanced skin.
No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.
One ingredient could feed malassezia: Glycereth-25 PCA Isostearate. That describes the yeast's food supply, not a prediction that it will cause a breakout.
Nothing in this formula is on the standard pregnancy-caution list. That is not medical clearance — check anything you use daily with your doctor or midwife.
No — it contains Parfum.
No. Reading the full ingredient list, this formula is no drying alcohol.
Yes. Reading the full ingredient list, this formula is silicone-free.
No. Reading the full ingredient list, this formula is essential-oil-free.
Yes. Reading the full ingredient list, this formula is paraben-free.
It layers well with Vitamin C (L-ascorbic acid), Retinoids (retinol, retinal), AHAs (glycolic, lactic), BHA (salicylic acid), PHAs (gluconolactone), Benzoyl peroxide.
Use it morning and evening, after toner, before moisturiser.
It lists 18 ingredients, of which 7 are recorded as actives.
Heimish, a brand based in Korea.
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