Kate Somerville ExfoliKate® Intensive Pore Exfoliating Treatment Versus Peter Thomas Roth PRO Strength Retinoid Peptide Serum

Kate Somerville ExfoliKate® Intensive Pore Exfoliating Treatment Versus Peter Thomas Roth PRO Strength Retinoid Peptide Serum

This smoothing exfoliator is formulated around Lactic Acid and Silica to refine skin texture and refine the look of pores.

This anti-aging serum is formulated around Hydroxypinacolone Retinoate and Ceramide NP to soften the look of wrinkles and refine skin texture.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Lactic Acid

Silica

Glycine Soja Oil

Pectin

Cetearyl Alcohol

Carica Papaya Fruit

Ceteareth-20

Cetyl Alcohol

Phenoxyethanol

Dehydroxanthan Gum

Glyceryl Stearate

PEG-100 Stearate

Salicylic Acid

Lactobacillus/Pumpkin Ferment Extract

Alcohol Denat.

Sorbic Acid

Cinnamal

Mel

Citrus Aurantium Bergamia Fruit Oil

Eugenol

Potassium Sorbate

Limonene

Linalool

Lavandula Angustifolia Oil

Beta-Carotene

Aloe Barbadensis Leaf Juice Powder

Bromelain

Papain

Retinyl Palmitate

Tocopheryl Acetate

Cinnamomum Cassia Leaf Oil

Acetic Acid

Pogostemon Cablin Leaf Oil

Pelargonium Graveolens Flower Oil

Aniba Rosaeodora Wood Extract

Citrus Aurantium Dulcis Peel Oil

CI 75810

Water, Lactic Acid, Silica, Glycine Soja Oil, Pectin, Cetearyl Alcohol, Carica Papaya Fruit, Ceteareth-20, Cetyl Alcohol, Phenoxyethanol, Dehydroxanthan Gum, Glyceryl Stearate, PEG-100 Stearate, Salicylic Acid, Lactobacillus/Pumpkin Ferment Extract, Alcohol Denat., Sorbic Acid, Cinnamal, Mel, Citrus Aurantium Bergamia Fruit Oil, Eugenol, Potassium Sorbate, Limonene, Linalool, Lavandula Angustifolia Oil, Beta-Carotene, Aloe Barbadensis Leaf Juice Powder, Bromelain, Papain, Retinyl Palmitate, Tocopheryl Acetate, Cinnamomum Cassia Leaf Oil, Acetic Acid, Pogostemon Cablin Leaf Oil, Pelargonium Graveolens Flower Oil, Aniba Rosaeodora Wood Extract, Citrus Aurantium Dulcis Peel Oil, CI 75810

C9-12 Alkane

Dimethicone

Isononyl Isononanoate

Dimethyl Isosorbide

Trisiloxane

Cyclopentasiloxane

Polysilicone-11

Coco-Caprylate/Caprate

Caprylic/Capric Triglyceride

Hydroxypinacolone Retinoate

Palmitoyl Hexapeptide-14

Ceramide NP

Helianthus Annuus Seed Extract

Hordeum Vulgare Extract

Cucumis Sativus Extract

Laminaria Ochroleuca Extract

Zingiber Officinale Root Extract

Phytosteryl Canola Glycerides

Sodium Hyaluronate

Sodium PCA

Squalane

Tocopherol

Lecithin

Linoleic Acid

Oleic Acid

Palmitic Acid

Stearic Acid

Hydroxystearic Acid

Triolein

Bisabolol

Ethylhexyl Hydroxystearate

Ethoxydiglycol

Ethylhexylglycerin

Mica

C9-12 Alkane, Dimethicone, Isononyl Isononanoate, Dimethyl Isosorbide, Trisiloxane, Cyclopentasiloxane, Polysilicone-11, Coco-Caprylate/Caprate, Caprylic/Capric Triglyceride, Hydroxypinacolone Retinoate, Palmitoyl Hexapeptide-14, Ceramide NP, Helianthus Annuus Seed Extract, Hordeum Vulgare Extract, Cucumis Sativus Extract, Laminaria Ochroleuca Extract, Zingiber Officinale Root Extract, Phytosteryl Canola Glycerides, Sodium Hyaluronate, Sodium PCA, Squalane, Tocopherol, Lecithin, Linoleic Acid, Oleic Acid, Palmitic Acid, Stearic Acid, Hydroxystearic Acid, Triolein, Bisabolol, Ethylhexyl Hydroxystearate, Ethoxydiglycol, Ethylhexylglycerin, Water, Mica, Phenoxyethanol

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

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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