Cooling Water
Cooling Water
Product Description
Product overview
A cooling, hydrating under-eye gel stick that helps reduce the look of puffy eyes and refreshes skin with caffeine and seawater. Multi-use formula glides on smoothly for an instant wake-up effect on face and body.
Instant Cooling Effect
Glides on with a refreshing cool sensation that immediately soothes tired, puffy eyes and skin. Store in the fridge for an extra burst of chill.
Texture & feel
SENSORYInstant Cooling Effect
Glides on with a refreshing cool sensation that immediately soothes tired, puffy eyes and skin. Store in the fridge for an extra burst of chill.
Caffeine De-Puffing
Caffeine helps support micro-circulation to reduce the appearance of puffiness and energize dull, fatigued skin around the eye area.
Seawater Hydration
Natural seawater rich in marine minerals soothes and hydrates skin, providing lasting moisture and a healthy, refreshed glow.
Multi-Use & Travel-Ready
Use on eyes, face, and body. The solid twist-up stick is TSA-friendly and fits easily in any bag for on-the-go hydration.
Safety & compatibility
SAFEContains no retinoids, salicylic acid, hydroquinone, or chemical sunscreen filters. All ingredients are considered safe during pregnancy and lactation.
Free from ferments, problematic esters, polysorbates, and short-chain fatty acids that feed malassezia yeast. Stearic acid (C18) present is generally considered safe.
Lightweight, water-based gel formula with no heavy oils or pore-clogging waxes. Very unlikely to cause breakouts for most skin types.
Fragrance-free and free from common irritants. The simple, gentle formula is well-tolerated by most sensitive skin types. Always patch test first.
A synthetic colorant that gives the stick its blue tint. Generally well-tolerated but may cause sensitivity in very rare cases for those with dye allergies.
A PEG-modified silicone used as a humectant/emollient. The brand labels this product "silicone-free," though this ingredient is technically a silicone derivative.
Ingredient breakdown
INGREDIENTSCaffeineProven
A powerful antioxidant and vasoconstrictor that helps improve micro-circulation around the delicate eye area, reducing the appearance of puffiness and dark circles.
- Mechanism: Constricts blood vessels to reduce fluid accumulation and puffiness under the eyes
- Research: Studies show topical caffeine improves microcirculation and has anti-inflammatory properties
- Bonus: Also acts as an antioxidant to help protect skin from UV-induced free radical damage
Sea Water (Maris Aqua)Promising
Natural seawater rich in over 60 trace minerals including magnesium, calcium, and potassium that help soothe and hydrate the skin.
- Benefits: Mineral-rich water helps maintain skin's natural moisture balance and soothes irritation
- Minerals: Contains magnesium (anti-inflammatory), zinc (healing), and selenium (antioxidant)
Aloe Barbadensis Leaf JuiceProven
A time-tested botanical with powerful soothing, anti-inflammatory, and hydrating properties. Rich in vitamins A, C, and E along with natural polysaccharides.
- Hydration: Contains natural polysaccharides that bind moisture to skin
- Soothing: Reduces inflammation and calms irritated, reddened skin
- Healing: Promotes skin repair and helps protect the skin barrier
Kappaphycus Alvarezii ExtractPromising
A red algae extract rich in galactan polysaccharides. The manufacturer claims it can help maintain skin cell longevity by supporting telomere health.
- Anti-aging: In-vitro studies by the manufacturer show it may reduce stress-induced telomere shortening by up to 65%
- In-vivo results: After 42 days of use, studies showed improved dermal matrix appearance by ~30%
Glycerin Low-mid %Proven
A gold-standard humectant naturally found in skin. Draws moisture into the upper layers of skin and helps maintain the skin barrier in a healthy state.
- Evidence: A 2016 study found glycerin more effective as a humectant than AHAs and hyaluronic acid
- Skin-identical: Naturally present in skin, making it extremely well-tolerated
19 ingredients
Aqua/Water/Eau, Propanediol, Bis-PEG-18 Methyl Ether Dimethyl Silane, Sodium Stearate, Aloe Barbadensis Leaf Juice, Kappaphycus Alvarezii Extract, Maris Aqua/Sea Water/Eau de Mer, Caffeine, Glycerin, Stearic Acid, Nylon-12, Sodium Sulfate, Sodium Chloride, Citric Acid, Potassium Sorbate, Sodium Benzoate, Chlorphenesin, Phenoxyethanol, Blue 1 (CI 42090).
Where it fits in your routine
ROUTINEApply after cleansing and toning, before heavier serums and moisturizers. Can also be used as a makeup primer or for a midday refresh over makeup. Works AM & PM.
How to use
HOW TO USERemove Inner Disk
On first use, remove the cap and gently twist off the inner plastic disk. Do not flick or pull, as this can damage the product.
Twist Up & Glide On
Twist up a small amount of product. Gently glide the stick directly under the eyes, across the forehead, cheeks, or anywhere skin needs a refresh.
Pat & Blend
Lightly pat the product into the skin with your ring finger using gentle tapping motions. Allow 30 seconds to absorb before applying additional products or makeup.
Pro Tip: Refrigerate
Store the stick in the fridge overnight for an extra burst of cooling refreshment. The cold application amplifies the de-puffing effect, especially in the morning.
Who is it for?
WHOPerfect for you if:
- You struggle with morning puffiness around the eyes
- You want a quick, mess-free hydration boost on the go
- You need a lightweight primer before makeup
- You have sensitive or acne-prone skin and want a simple formula
- You travel often and need a non-liquid hydrator
- You want a multi-use product for face and body
Consider alternatives if:
- You need heavy-duty anti-aging treatment for deep wrinkles
- You have extremely dry skin and need a rich, occlusive moisturizer
- You prefer targeted dark circle treatments with vitamin K or retinol
- You are on a strict budget (more affordable dupes exist)
- You dislike dewy finishes and prefer a completely matte look
Skin type compatibility
SKIN TYPESLightweight gel formula absorbs quickly without adding shine or greasiness. Oil-free and non-comedogenic.
Provides lightweight hydration and smooths flaky patches, but very dry skin may need a richer moisturizer layered on top.
Balances well across different face zones. Hydrates dry areas without making the T-zone oily.
Fragrance-free with a minimal, gentle ingredient list. Contains Blue 1 dye, so patch test if you have dye sensitivities.
Non-comedogenic, oil-free, and fungal acne safe formula. Very low risk of causing breakouts.
Results timeline
6+ WEEKSInstant Cooling & Soothing
Skin feels refreshed, cool, and awakened on contact. Visible reduction in redness and an instant sense of hydration.
95% noticed immediate coolingReduced Morning Puffiness
With consistent daily use, under-eye puffiness appears visibly reduced. Skin around the eyes looks more refreshed and energized throughout the day.
80% noticed less puffinessImproved Hydration & Smoothness
Skin texture feels smoother and more plump. The under-eye area appears brighter and more even-toned. Works well as a consistent primer base.
70% noticed brighter skinLong-Term Skin Health
Continued use supports overall skin hydration and may help with the appearance of the skin's dermal matrix thanks to the red algae extract.
65% reported lasting improvementRatings by platform
2K+ REVIEWSPros & cons
BALANCEDPraised
- Genuinely cooling and soothing sensation on application
- Convenient twist-up stick is mess-free and travel-friendly
- Multi-use: eyes, face, body, and as a makeup primer
- Clean, vegan formula with a short, simple ingredient list
- Lasts 3+ months with daily use, good value per application
- No fragrance, great for sensitive and acne-prone skin
- Visibly reduces morning puffiness, especially when refrigerated
Criticized
- Premium price point ($29) for a relatively basic formula
- Does not specifically target or reduce dark circles
- Some users find the texture slightly tacky before absorbing
- Can melt in warm temperatures or if left in a hot bag
- No advanced anti-aging actives like retinol or peptides
- Blue dye may stain light-colored fabrics or pillowcases
Budget-friendly alternatives (dupes)
DUPESShares glycerin, aloe, sodium stearate, niacinamide, and the same Blue 1 tint. Misses caffeine and seawater but adds panthenol. Fraction of the price for a very similar hydrating stick format.
Similar hydrating stick format with overlapping base ingredients. Lacks caffeine and seawater for de-puffing but provides comparable lightweight moisture at a fraction of the cost.
K-beauty cooling eye stick with bamboo extract and galactomyces. Offers similar cooling and de-puffing in a stick format. Slightly different ingredient profile but targets the same concerns.
Comparison with competitors
SIDE-BY-SIDEDarphin Hydraskin Cooling Stick
Essence Hydro Hero Under Eye Stick
Storage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct heat. Refrigerate for an enhanced cooling effect. Avoid leaving in hot cars or bags.
Twist-up stick with protective cap. Filled from the bottom without a mold for a cleaner, creamier formula.
Yes, solid stick format is TSA-friendly. No liquid restrictions. Compact and portable design fits in any bag or pocket.
Frequently asked questions
FAQYes. The Cooling Water formula contains no retinoids, salicylic acid, hydroquinone, chemical sunscreen filters, or any other ingredients commonly flagged as unsafe during pregnancy or breastfeeding. All ingredients are well-tolerated and considered safe for use during pregnancy and lactation. As always, consult your healthcare provider if you have specific concerns.
Yes. The formula is free from ferments, polysorbates, problematic esters, and short-chain fatty acids (C11-C17) that feed malassezia yeast. The stearic acid present is a C18 fatty acid, which is generally considered safe for fungal acne. The formula is also oil-free, further reducing risk.
Yes. Cooling Water has a simple, non-active formula with no exfoliating acids or retinoids. It pairs well with retinol, vitamin C, AHAs, and BHAs without causing interactions. Apply it before or after your actives as a soothing, hydrating layer. The cooling effect can even help calm skin that feels irritated from strong actives.
Cooling Water works well for all skin types. It is particularly excellent for oily, combination, and acne-prone skin due to its lightweight, oil-free, non-comedogenic formula. Dry skin types will enjoy the hydration boost but may need to layer a richer moisturizer on top. Sensitive skin types generally tolerate it well thanks to its fragrance-free, minimal formula.
The cooling and soothing effect is instant. You will notice reduced puffiness and a more refreshed appearance immediately after application. With consistent daily use over 1-2 weeks, most users report visibly less morning puffiness. After 3-4 weeks, skin typically looks smoother, more hydrated, and brighter overall.
Apply Cooling Water after cleansing and toning, but before heavier serums, moisturizers, and sunscreen (step 3 in a typical routine). It can also be layered under makeup as a hydrating primer. You can reapply throughout the day over bare skin or as a midday refresh.
The Cooling Water has a comedogenic rating of 1 out of 5, meaning it has very low pore-clogging potential. The formula is oil-free and water-based with no heavy waxes or occlusives. It is suitable for acne-prone skin and is unlikely to cause breakouts for the vast majority of people.
The product has a Period After Opening (PAO) of 12 months. With daily use, the 1.0 oz stick typically lasts 3 or more months. Store in a cool, dry place and close the cap tightly after each use to maintain freshness. Refrigerating extends both the product experience and shelf life.
Verdict: Milk Makeup Cooling Water is a clever, multi-use hydrating stick that delivers on its core promise of instant cooling, soothing, and de-puffing. Its clean, minimal formula is impressively safe for pregnancy, fungal acne, and sensitive skin. The stick format is uniquely convenient for travel and on-the-go use. Where it falls slightly short is its premium price for what is essentially a simple hydrating formula without powerhouse actives. If you value convenience, a clean ingredient list, and a refreshing sensory experience, this is a smart addition to your routine. Budget-conscious shoppers should consider the Essence Hydro Hero at a fraction of the price for similar base hydration.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
Propanediol
Solvent, Viscosity Controlling, Viscosity Decreasing Agent
|
|
|
| 0 |
Bis-PEG-18 Methyl Ether Dimethyl Silane
Emollient, Humectant, Skin Conditioning
|
|
|
| 1 |
Sodium Stearate
Surfactant, Viscosity Controlling, Viscosity Increasing Agent, Emulsifying, Sufactant
|
|
|
| 0 |
Aloe Barbadensis Leaf Juice
Skin Conditioning
|
Hydrating
Redness
Irritation
|




