Skin science article
Paula's Choice 10% Azelaic Acid Booster Versus La Roche-Posay Effaclar Ultra Concentrated Serum
Paula's Choice 10% Azelaic Acid Booster Versus La Roche-Posay Effaclar Ultra Concentrated Serum This calming treatment is formulated around Azelaic Acid and Salicylic Acid to calm redness and fade the look of dark spots. This acne serum is formulated around Gl
Paula's Choice 10% Azelaic Acid Booster Versus La Roche-Posay Effaclar Ultra Concentrated Serum
This calming treatment is formulated around Azelaic Acid and Salicylic Acid to calm redness and fade the look of dark spots.
This acne serum is formulated around Glycolic Acid and Niacinamide to clear breakouts and refine skin texture.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Azelaic Acid
C12-15 Alkyl Benzoate
Caprylic/Capric Triglyceride
Methyl Glucose Sesquistearate
Glycerin
Cetearyl Alcohol
Glyceryl Stearate
Dimethicone
Salicylic Acid
Adenosine
Glycyrrhiza Glabra Root Extract
Boerhavia Diffusa Root Extract
Allantoin
Bisabolol
Cyclopentasiloxane
Xanthan Gum
Sclerotium Gum
Propanediol
Butylene Glycol
Phenoxyethanol
Water, Azelaic Acid, C12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Methyl Glucose Sesquistearate, Glycerin, Cetearyl Alcohol, Glyceryl Stearate, Dimethicone, Salicylic Acid, Adenosine, Glycyrrhiza Glabra Root Extract, Boerhavia Diffusa Root Extract, Allantoin, Bisabolol, Cyclopentasiloxane, Xanthan Gum, Sclerotium Gum, Propanediol, Butylene Glycol, Phenoxyethanol
Alcohol Denat.
Glycolic Acid
Niacinamide
Dimethyl Isosorbide
Pentylene Glycol
Sodium Hydroxide
PEG-60 Hydrogenated Castor Oil
Hydroxyethylpiperazine Ethane Sulfonic Acid
Citric Acid
PEG-30 Glyceryl Cocoate
Capryloyl Salicylic Acid
Biosaccharide Gum-1
Maltodextrin
Phytic Acid
Polyquaternium-10
Parfum
Water, Alcohol Denat., Propanediol, Glycolic Acid, Niacinamide, Dimethyl Isosorbide, Pentylene Glycol, Salicylic Acid, Sodium Hydroxide, PEG-60 Hydrogenated Castor Oil, Hydroxyethylpiperazine Ethane Sulfonic Acid, Citric Acid, PEG-30 Glyceryl Cocoate, Capryloyl Salicylic Acid, Biosaccharide Gum-1, Maltodextrin, Phytic Acid, Polyquaternium-10, Parfum
Reviews
Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Salicylic Acid (also known as beta hydroxy acid or BHA) is a well-known ingredient for treating skin that struggles with acne and clogged pores. It exfoliates both the skin's surface and deep within the pores to help clear out buildup, control oil, and reduce inflammation.
Unlike AHAs (alpha hydroxy acids), salicylic acid is oil-soluble. This allows it to penetrate into pores which makes it especially effective for treating blackheads and preventing future breakouts.
Salicylic acid is also known for its soothing properties. It has a similar structure to aspirin and can calm inflamed or irritated skin, making it a good option for acne-prone skin that is also sensitive.
Concentrations of 0.5-2% are recognized by the U.S. FDA as an over-the-counter topical acne product.
It can cause irritation and/or dryness if one's skin already has a compromised moisture barrier, so it's best to focus on repairing that before introducing this ingredient into your routine.
While salicylic acid does not increase sun sensitivity, it’s still important to wear sunscreen daily to protect your skin.
If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.
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!