Versus

ESPA Overnight Hydration Therapy Versus ESPA Isotonic Hydration Mask

Overnight Mask
Wash Off Mask
British Brand United Kingdom
British Brand United Kingdom

Updated on October 31, 2024

Overview

What they are

These products are both reef safe . They have a total of 11 ingredients in common

Cool Features

They both contain hyaluronic acid

Suited For

They're both likely to be good for dry skin, brightening skin, sensitive skin and scar healing

Free From

They both do not contain any parabens, silicones or sulfates

What's Inside

They both contain harsh alcohols, common allergens, fragrances and oils

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

Click any item below to learn more and see relevant ingredients

What's inside

What's inside

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Overnight Hydration Therapy

Water

Skin Conditioning

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Polyglyceryl-2 Stearate

Emulsifying
Not safe for Fungal Acne Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Stearyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Xylitylglucoside

Humectant
Helps hydrate Dry Skin Icon

Ethylhexyl Palmitate

Emollient
2-3 / 0 May worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Anhydroxylitol

Humectant
Helps hydrate Dry Skin Icon

Benzyl Alcohol

Perfuming
Alcohol IconFragrance IconPreservative IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Ascorbyl Glucoside

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps brighten skin Icon

Xylitol

Humectant
Helps hydrate Dry Skin Icon

Xanthan Gum

Emulsifying

Lavandula Hybrida Oil

Emollient
Oil Icon

Sodium PCA

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Linalool

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Glucose

Humectant
Helps hydrate Dry Skin Icon

Lavandula Angustifolia Oil

Masking
Fragrance IconOil IconMay cause irritation IconEU Allergen Icon

Dehydroacetic Acid

Preservative
Preservative Icon

Eucalyptus Globulus Leaf Oil

Perfuming
Fragrance IconOil IconMay cause irritation IconEU Allergen Icon

Eugenia Caryophyllus Leaf Oil

Masking
Fragrance IconOil IconMay cause irritation IconEU Allergen Icon

Cichorium Intybus Root Extract

Masking

Trihydroxystearin

Skin Conditioning
Not safe for Fungal Acne Icon

Phenoxyethanol

Preservative
Preservative Icon

Magnesium PCA

Humectant
Helps hydrate Dry Skin Icon

Eugenol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Hydrolyzed Yeast Protein

Skin Conditioning

Caprylyl Glycol

Emollient
Fatty Alcohol Icon

Juniperus Mexicana Oil

Masking
Oil Icon

Ethylhexylglycerin

Skin Conditioning

Sorbitol

Humectant
0 / 0 Helps hydrate Dry Skin Icon

Zinc PCA

Humectant
Good for Oily Skin IconHelps reduce Skin Redness IconGood for Scar Healing IconHelps fight Acne Icon

Abies Sibirica Oil

Masking
Fragrance IconOil Icon

Acacia Senegal Gum

Masking

Cananga Odorata Flower Oil

Masking
Fragrance IconOil IconMay cause irritation IconEU Allergen IconMay worsen Eczema Icon

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Pelargonium Graveolens Oil

Masking
Fragrance IconOil IconMay cause irritation Icon

Sodium Benzoate

Masking
Preservative Icon

Limonene

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Potassium Sorbate

Preservative
Preservative Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Geraniol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Chitosan

Manganese PCA

Humectant

Glyceryl Linoleate

Emollient
Not safe for Fungal Acne Icon

Glyceryl Linolenate

Emollient
Not safe for Fungal Acne Icon

Boswellia Carterii Oil

Masking
Oil Icon

Bulnesia Sarmientoi Wood Oil

Masking
Oil Icon

Cistus Ladaniferus Oil

Emollient
Oil Icon

Sodium Ascorbyl Phosphate

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps brighten skin Icon

Retinyl Palmitate

Skin Conditioning
1-3 / 1-3 Retinoid IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin IconNot safe for Fungal Acne IconMay worsen Rosacea Icon

Disodium EDTA

Chondrus Crispus Extract

Skin Conditioning
Helps hydrate Dry Skin Icon

Glyceryl Caprylate

Emollient

Glucomannan

Skin Conditioning

Citric Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Sodium Hydroxide

Buffering
Isotonic Hydration Mask

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Masking, Perfuming

Cananga Odorata Flower Oil comes from the ylang-ylang flower, Cananga odorata.

Ylang-ylang oil has slight antibacterial, antioxidant and antifungal properties. However, it also contains a number of sensitizing ingredients such as geraniol, limonene, linalool and benzyl benzoate. These compounds are known EU allergens.

The composition of this ingredient depends on the source. Luxury perfumes tend to use higher grade ylang-ylang for their fragrance. Lower grade ylang-ylang is less fragrant.

Learn more about Cananga Odorata Flower Oil
Buffering, Masking

Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.

Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.

However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.

Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Read more about some other popular AHA's here:

Learn more about Citric Acid
Humectant, Skin Conditioning, Skin Protecting

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
Perfuming

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.

This ingredient has a scent that is floral, spicy tropical, and citrus-like.

Learn more about Linalool
Masking, Perfuming

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Preservative

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

You'll often find this ingredient used with other preservatives.

Learn more about Potassium Sorbate
Masking, Preservative

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.

It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.

Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.

We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.

Learn more about Sodium Benzoate
Humectant, Skin Conditioning

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.

Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate
Buffering

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide
Skin Conditioning, Solvent

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 Water

When to use

2 Routines
0% use in am
100% use in pm
50% use every day
2 Routines
0% use in am
100% use in pm
100% use every day