La Roche-Posay Glycolic HA Versus The INKEY List 15% Vitamin C And EGF Serum

La Roche-Posay Glycolic HA Versus The INKEY List 15% Vitamin C And EGF Serum

This smoothing serum is formulated around Glycolic Acid and Hydrolyzed Hyaluronic Acid to refine skin texture and fade the look of dark spots.

This brightening serum is formulated around Ascorbyl Glucoside to brighten dull-looking skin and fade the look of dark spots.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Alcohol Denat.

Hydroxyethylpiperazine Ethane Sulfonic Acid

Glycolic Acid

Diisopropyl Adipate

Propylene Glycol

Pentylene Glycol

Citric Acid

PPG-26-Buteth-26

PEG-30 Glyceryl Cocoate

PEG-40 Hydrogenated Castor Oil

Sodium Hydroxide

P-Anisic Acid

Hydrolyzed Hyaluronic Acid

Capryloyl Salicylic Acid

Tetrasodium EDTA

Polyquaternium-10

Water, Alcohol Denat., Hydroxyethylpiperazine Ethane Sulfonic Acid, Glycolic Acid, Diisopropyl Adipate, Propylene Glycol, Pentylene Glycol, Citric Acid, PPG-26-Buteth-26, PEG-30 Glyceryl Cocoate, PEG-40 Hydrogenated Castor Oil, Sodium Hydroxide, P-Anisic Acid, Hydrolyzed Hyaluronic Acid, Capryloyl Salicylic Acid, Tetrasodium EDTA, Polyquaternium-10

Ascorbyl Glucoside

Phenoxyethanol

Benzyl Alcohol

Butylene Glycol

Xanthan Gum

Ethylhexylglycerin

Sodium Metabisulfite

Dehydroacetic Acid

Phytic Acid

Oligopeptide-1

Water, Ascorbyl Glucoside, Sodium Hydroxide, PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Benzyl Alcohol, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Sodium Metabisulfite, Dehydroacetic Acid, Phytic Acid, Oligopeptide-1

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Alternatives

Ingredients Explained

These ingredients are found in both products.

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

PEG-40 Hydrogenated Castor Oil is an emulsifier derived from castor oil.

As an emulsifying agent, it helps other ingredients like fragrances and fat-soluble vitamins dissolve cohesively.

Due to its large molecule size, it doesn't penetrate beyond the skin's surface.

This ingredient has a solid regulatory track record; the CIR Expert Panel first concluded it was safe for use in cosmetics at concentrations up to 100% in 1997. A 2012 reassessment reaffirmed that finding. Safety studies have also found no irritation or evidence of toxicity.

A 2019 study did find this ingredient to grow Malassezia, so this ingredient may not be fungal acne safe.

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.

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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