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Skin science article

La Roche-Posay Effaclar Adapalene Gel 0.1% Topical Retinoid For Acne Versus The INKEY List Retinol Serum

La Roche-Posay Effaclar Adapalene Gel 0.1% Topical Retinoid For Acne Versus The INKEY List Retinol Serum This acne treatment is formulated around Adapalene to clear breakouts and refine skin texture. This anti-aging serum is formulated around Retinyl Acetate a

La Roche-Posay Effaclar Adapalene Gel 0.1% Topical Retinoid For Acne Versus The INKEY List Retinol Serum

This acne treatment is formulated around Adapalene to clear breakouts and refine skin texture.

This anti-aging serum is formulated around Retinyl Acetate and Palmitoyl Tetrapeptide-7 to soften the look of wrinkles and refine skin texture.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Adapalene 0.1%

Carbomer

Homopolymer

Disodium EDTA

Methylparaben

Poloxamer 182

Propylene Glycol

Water

Sodium Hydroxide

Adapalene 0.1%, Carbomer, Homopolymer, Disodium EDTA, Methylparaben, Poloxamer 182, Propylene Glycol, Water, Sodium Hydroxide

Glycerin

Butylene Glycol

Propanediol

Dicaprylyl Carbonate

Retinyl Acetate

Dimethicone

Phenoxyethanol

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Caprylyl Glycol

Phospholipids

Squalane

Glycine Soja Oil

Polysorbate 60

Tocopheryl Acetate

Glycolipids

Sodium Phytate

Sorbitan Isostearate

Glycine Soja Sterols

Tetrahexyldecyl Ascorbate

Leuconostoc/Radish Root Ferment Filtrate

Hyaluronic Acid

Sodium Lactate

Tocopherol

Polysorbate 20

Palmitoyl Tetrapeptide-7

Palmitoyl Tripeptide-1

Water, Glycerin, Butylene Glycol, Propanediol, Dicaprylyl Carbonate, Retinyl Acetate, Dimethicone, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Caprylyl Glycol, Phospholipids, Squalane, Glycine Soja Oil, Carbomer, Polysorbate 60, Tocopheryl Acetate, Glycolipids, Sodium Hydroxide, Sodium Phytate, Sorbitan Isostearate, Glycine Soja Sterols, Tetrahexyldecyl Ascorbate, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Sodium Lactate, Tocopherol, Polysorbate 20, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1

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.

Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture.

Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%.

It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier.

Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%.

A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions.

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!

Similar Comparisons

The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

01

Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Side-by-side

  1. 01Water
  2. 02Propanediol
  3. 03Glycerin
  4. 04Sodium Methyl Cocoyl Taurate
  5. 05Cocamidopropyl Betaine
  6. 06PEG-120 Methyl Glucose Dioleate
  7. 07Salicylic Acid
  8. 08PEG-150 Pentaerythrityl Tetrastearate
  9. 09PEG-6 Caprylic/Capric Glycerides
  10. 10Betaine
  11. 11Zinc PCA
  12. 12Phenoxyethanol
  13. 13Sodium Chloride
  14. 14Allantoin
  15. 15Sodium Hydroxide
  16. 16Coco-Glucoside
  17. 17Glyceryl Oleate
  18. 18Benzyl Alcohol
  19. 19Coconut Acid
  20. 20Ethylhexylglycerin
Source · skinsort.com
02

Product index

Related product references

Product

The Inkey List Seakelp Serum

The Inkey List Seakelp Serum The Inkey List Seakelp Serum ingredients explained: Aqua (Water/Eau), Macrocystis Pyrifera (Kelp) Extract, Phenoxyethanol, Glycerin, Xanthan Gum, Sodium Levulin…

Source: incidecoder.comView reference →

Product

The Inkey List Phytic Acid Serum

The Inkey List Phytic Acid Serum The Inkey List Phytic Acid Serum ingredients explained: Water (Aqua/Eau), Propanediol, Butylene Glycol, Phytic Acid, Glycerin, Phenoxyethanol, Sodium Hydrox…

Source: incidecoder.comView reference →
03

Comparison edit

Read side by side