Updated on July 18, 2023
Overview
What they are
These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe toners. They have a total of 1 ingredients in common
Suited For
They're both likely to be good for anti aging, brightening skin, scar healing and better texture
Free From
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
REN Clean Skincare Ready Steady Glow Daily AHA Tonic 16 ingredients
COSRX Hydrium Watery Toner 13 ingredients
At a glance
Click on any of the items below to learn more
REN Clean Skincare Ready Steady Glow Daily AHA Tonic 16 ingredients
COSRX Hydrium Watery Toner 13 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
Ingredients Side-by-side
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
Sodium Lactate is the sodium salt of lactic acid, an AHA. It is a humectant and used to adjust the pH of a product.
6 Benefits 3 Concerns
Lactic Acid is an AHA that is derived from fermenting lactose, a carbohydrate from milk. It removes the top layer of old and dead skin cells and helps increase cell turnover.
Potassium Azeloyl Diglycinate (PAD) comes from the condensation of azelaic acid mixed with glycine.
Glyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut.
May worsen Eczema
Benzoic Acid is used to preserve and adjust the pH of products.
Oil
Citrus Grandis Peel Oil is an essential oil that is derived from the peel of a Grapefruit. It is composed largely of limonene, which is a fragrance that can cause irritation for sensitive skin.
Citrus Tangerina Peel Oil comes from the peels of the tangerine, or mandarin.
2 Concerns
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Limonene is a fragrance that adds scent and taste to a formulation.
Water, Sodium Lactate, Lactic Acid, Heptyl Glucoside, Potassium Azeloyl Diglycinate, Triethyl Citrate, Glyceryl Caprylate, Salix Nigra Bark Extract, Benzoic Acid, Citrus Nobilis Peel Oil, Citrus Aurantium Dulcis Flower Oil, Citrus Grandis Peel Oil, Citrus Tangerina Peel Oil, Heptanol, Parfum, Limonene
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
Panthenol is a common ingredient that helps hydrate and soothe the skin. It can be found naturally in our skin and hair.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
Sodium Hyaluronate Crosspolymer is a type of hyaluronic acid. In fact, it is modified version of hyaluronic acid.
Hydrolyzed Hyaluronic Acid is a form of hyaluronic acid. It is created by the hydrolysis of hyaluronic acid with a high molecular weight. Once created, Hydrolyzed Hyaluronic Acid has a low molecular weight.
4 Benefits May cause irritation
Hyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterIngredient Ratings
Here's what our community thinks of the ingredients in these two products.
When to use
REN Clean Skincare Ready Steady Glow Daily AHA Tonic 16 ingredients
COSRX Hydrium Watery Toner 13 ingredients
Reviews
Here's what our community thinks
REN Clean Skincare Ready Steady Glow Daily AHA Tonic 16 ingredients
COSRX Hydrium Watery Toner 13 ingredients
Taynara Motta
One of my favorite toners ever (if not theee favorite among all)! It's really lightweight and watery, but it's amazing how hydrating it is. I also...
One of my favorite toners ever (if not theee favorite among all)! It's really lightweight and watery, but it's amazing how hydrating it is. I also think it helps to soothe irritated skin.
