Versus

Zelens Youth Intelligence Age Defying Serum Versus Is Clinical Active Serum

Serum
Serum
British Brand United Kingdom
American Brand United States

Updated on October 28, 2024

Overview

What they are

These products are both reef safe serums. They have a total of 3 ingredients in common

Suited For

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

Free From

They both do not contain any oils, parabens or sulfates

What's Inside

They both contain harsh alcohols and common allergens

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

About this product

About this product

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Benefits

Concerns

Ingredients Side-by-side

found in both products
Youth Intelligence Age Defying Serum

Water

Skin Conditioning

Pentaerythrityl Tetraethylhexanoate

Emollient

Phytosteryl Canola Glycerides

Skin Conditioning
Not safe for Fungal Acne Icon

Caprylic/Capric Triglyceride

Masking

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Dimethicone

Emollient
1 / 0 Silicon Icon

Lauryl Lactate

Emollient

Cetearyl Alcohol

Emollient
2 / 1 Fatty Alcohol IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Hydrolyzed Glycosaminoglycans

Humectant

Magnesium Ascorbyl Phosphate

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

Phospholipids

Skin Conditioning

Sodium Stearoyl Glutamate

Cleansing

Cetearyl Glucoside

Emulsifying

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

Ornithine

Skin Conditioning

Trifluoroacetyl Tripeptide-2

Skin Conditioning
Peptide Icon

Teprenone

Skin Conditioning

Acetyl Tetrapeptide-9

Skin Conditioning
Peptide Icon

Yeast Extract

Skin Conditioning
Not safe for Fungal Acne Icon

Glycolipids

Skin Conditioning

Hydrolyzed Soy Protein

Humectant

Hydrolyzed Yeast Protein

Skin Conditioning

Methylsilanol Mannuronate

Skin Conditioning

Hyaluronic Acid

Humectant
Hyaluronic Acid IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon

Plankton Extract

Skin Conditioning

Spirulina Maxima Extract

Smoothing

Fucus Serratus Extract

Skin Protecting

Sea Whip Extract

Skin Conditioning

Laminaria Digitata Extract

Skin Protecting

Palmaria Palmata Extract

Skin Protecting

Saccharomyces Ferment Lysate Filtrate

Skin Conditioning

Himanthalia Elongata Extract

Skin Protecting

Ulva Lactuca Extract

Skin Conditioning

Silanetriol

Glycogen

Humectant

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Methylpropanediol

Solvent

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Xanthan Gum

Emulsifying

Propanediol

Solvent

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Dehydroacetic Acid

Preservative
Preservative Icon

Dextran

Sodium Dehydroacetate

Preservative
Preservative Icon

Mannitol

Humectant

Carbomer

Emulsion Stabilising
1 / 0

Sodium Hydroxide

Buffering

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

Sorbic Acid

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Levulinic Acid

Perfuming
Fragrance Icon

P-Anisic Acid

Masking

Potassium Sorbate

Preservative
Preservative Icon

Ingredients Explained

These ingredients are found in both products.

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

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
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
Humectant, Masking, Skin Conditioning

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.
  • It has mild preservative properties.

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

When to use

1 Routine
100% use in am
0% use in pm
100% use every 3_days
69 Routines
20% use in am
80% use in pm
88% use every day
When to use See routines that use it ->