La Roche-Posay Rosaliac AR Intense Versus Paula's Choice Calm Redness Relief Repairing Serum

La Roche-Posay Rosaliac AR Intense Versus Paula's Choice Calm Redness Relief Repairing Serum

This calming serum is formulated around Acetyl Dipeptide-1 Cetyl Ester to calm redness.

This calming serum is formulated around Beta-Glucan and Ceramide NP to calm redness and strengthen the skin barrier.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Isostearyl Neopentanoate

Butylene Glycol

Pentylene Glycol

Polysorbate 20

Tambourissa Trichophylla Leaf Extract

Glyceryl Acrylate/Acrylic Acid Copolymer

Dimethicone

Dimethiconol

Ammonium Polyacryloyldimethyl Taurate

Disodium EDTA

Acetyl Dipeptide-1 Cetyl Ester

Water, Glycerin, Isostearyl Neopentanoate, Butylene Glycol, Pentylene Glycol, Polysorbate 20, Tambourissa Trichophylla Leaf Extract, Glyceryl Acrylate/Acrylic Acid Copolymer, Dimethicone, Dimethiconol, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Acetyl Dipeptide-1 Cetyl Ester

Hyaluronic Acid

Beta-Glucan

Sea Whip Extract

Sodium Hyaluronate

Ceramide NP

Ceramide AP

Ceramide EOP

Cholesterol

Glycyrrhiza Glabra Root Extract

Epilobium Angustifolium Flower/Leaf/Stem Extract

Phytosphingosine

Sodium Cocoyl Amino Acids

Chrysanthemum Parthenium Flower Extract

Glycine Soja Seed Extract

Ubiquinone

Sodium Lauroyl Lactylate

Caprylic/Capric Triglyceride

Magnesium Aspartate

Potassium Aspartate

Sarcosine

Xanthan Gum

Carbomer

PEG/PPG-14/4 Dimethicone

Ethylhexylglycerin

Phenoxyethanol

Water, Glycerin, Hyaluronic Acid, Beta-Glucan, Sea Whip Extract, Sodium Hyaluronate, Ceramide NP, Ceramide AP, Ceramide EOP, Cholesterol, Glycyrrhiza Glabra Root Extract, Epilobium Angustifolium Flower/Leaf/Stem Extract, Phytosphingosine, Sodium Cocoyl Amino Acids, Chrysanthemum Parthenium Flower Extract, Glycine Soja Seed Extract, Ubiquinone, Sodium Lauroyl Lactylate, Caprylic/Capric Triglyceride, Magnesium Aspartate, Potassium Aspartate, Sarcosine, Xanthan Gum, Carbomer, Polysorbate 20, PEG/PPG-14/4 Dimethicone, Disodium EDTA, Ethylhexylglycerin, Phenoxyethanol

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Ingredients Explained

These ingredients are found in both products.

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

Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.

This ingredient mainly works behind the scenes and helps with:

On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.

One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).

Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.

You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

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

Polysorbate 20 is a gentle, water-soluble emulsifier and mild surfactant. It stops oil and water from separating to keep your formulas blended and stable.

It also acts as a mild penetration enhancer by helping active ingredients absorb slightly better.

The common safety discussion around this ingredient involves a manufacturing byproduct called 1,4-dioxane.

Trace amounts can form during production but the EU's Scientific Committee on Consumer Safety has concluded that levels at/below 10 ppm in finished products are safe (commercial products consistently fall within acceptable margins).

True allergic reactions are uncommon and the CIR Expert Panel has confirmed this ingredient to be safe as used in cosmetics.

Because it is derived from lauric acid, it may not be fungal acne safe.

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. Remember to stay hydrated!

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