Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

PCA Skin Pigment Gel Versus Obagi Nu-Derm Clear FX Skin Brightening Cream

PCA Skin Pigment Gel Versus Obagi Nu-Derm Clear FX Skin Brightening Cream This brightening serum is formulated around Lactic Acid and Kojic Acid to fade the look of dark spots and brighten dull-looking skin. What's inside Key Ingredients Benefits Concerns Ingr

By Peptide Skincare & Beauty Editorial TeamPublished

PCA Skin Pigment Gel Versus Obagi Nu-Derm Clear FX Skin Brightening Cream

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

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Alcohol Denat.

Hamamelis Virginiana Water

Lactic Acid

Butylene Glycol

Kojic Acid

Azelaic Acid

Alcohol

Hydroxyethylcellulose

Phenylethyl Resorcinol

BHT

Glutathione

Silybum Marianum Fruit Extract

Water, Alcohol Denat., Hamamelis Virginiana Water, Lactic Acid, Butylene Glycol, Kojic Acid, Azelaic Acid, Alcohol, Hydroxyethylcellulose, Phenylethyl Resorcinol, BHT, Glutathione, Silybum Marianum Fruit Extract

Arbutin

Cetyl Alcohol

Glycerin

Sodium Lauryl Sulfate

Stearyl Alcohol

Tocopheryl Acetate

Ascorbic Acid

Saponins

Sodium Metabisulfite

Disodium EDTA

Butylparaben

Methylparaben

Propylparaben

Water, Arbutin, Cetyl Alcohol, Glycerin, Sodium Lauryl Sulfate, Stearyl Alcohol, Tocopheryl Acetate, Ascorbic Acid, Saponins, Sodium Metabisulfite, BHT, Lactic Acid, Disodium EDTA, Butylparaben, Methylparaben, Propylparaben

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

BHT is a synthetic antioxidant and preservative.

As an antioxidant, it helps your body fight off free-radicals. Free-radicals are molecules that may damage your skin cells.

As a preservative, it is used to stabilize products and prevent them from degrading. Specifically, BHT prevents degradation from oxidation.

The concerns related to BHT come from oral studies; this ingredient is currently allowed for use by both the FDA and EU.

However, it was recently restricted for use in the UK as of April 2024.

Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective.

Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads to smoother, softer, and more even-toned skin.

Because lactic acid molecules are larger than glycolic acid, they don’t penetrate as deeply. This means they’re less likely to sting or irritate, making it a great choice for beginners or those with sensitive skin.

Like glycolic acid, it can:

Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydration and also plays a role in the skin's natural moisturizing factor (NMF) in the form of sodium lactate.

Studies show it can boost ceramide production to strengthen the skin barrier and even help balance the skin’s microbiome.

To get results, choose products with a pH between 3-4.

Lower strengths (5-12%) focus on surface exfoliation; higher strengths (12% and up) can reach deeper in the dermis (deeper, supportive layer) to improve skin texture and firmness over time.

Though it was originally derived from milk, most modern lactic acid used in skincare is vegan. It is made through non-dairy fermentation to create a bio-identical and stable form suitable for all formulations.

When lactic acid shows up near the end of an ingredient list, it usually means the brand added just a tiny amount to adjust the product’s pH.

Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.

Lactic acid is truly a gentle multitasker: it exfoliates, hydrates, strengthens, and brightens. It's a great ingredient for giving your skin a smooth, glowing, and healthy look without the harshness of stronger acids.

Read more about some other popular AHA's 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!

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 Explained

  1. 01These ingredients are found in both products.
  2. 02Ingredients higher up in an ingredient list are typically present in a larger amount.
  3. 03Cocamidopropyl Betaine is a fatty acid created by mixing similar compounds in coconut oil and dimethylaminopropylamine, a compound with two amino groups.
  4. 04This ingredient is a surfactant and cleanser. It helps gather the dirt, pollutants, and other impurities in your skin to be washed away. It also helps thicken a product and make the texture more creamy.
  5. 05Being created from coconut oil means Cocamidopropyl Betaine is hydrating for the skin.
  6. 06While Cocamidopropyl Betaine was believed to be an allergen, a study from 2012 disproved this. It found two compounds in unpure Cocamidopropyl Betaine to be the irritants: aminoamide and 3-dimethylaminopropylamine. High-grade and pure Cocamidopropyl…
  7. 07Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
  8. 08It 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.
  9. 09On 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.
  10. 10Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
  11. 11You'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.
  12. 12Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
  13. 13Safety-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.
  14. 14Adverse 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.
  15. 15Water. 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.
  16. 16So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
  17. 17You'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!
Source · skinsort.com ⟶
02

Product index

Related product references

Product

PCA Skin Clearskin

PCA Skin Clearskin PCA Skin Clearskin ingredients explained: Water/Aqua/Eau, Ethylhexyl Isononanoate, Niacinamide, Glycereth-26, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copoly…

Source: incidecoder.comView reference →

Product

PCA Skin Pigment Gel (Discontinued)

PCA Skin Pigment Gel (Discontinued) PCA Skin Pigment Gel ingredients explained: Hydroquinone (2%), Water/Aqua/Eau, Hamamelis Virginiana (Witch Hazel) Water, Sd Alcohol 40-B, Butylene Glycol…

Source: incidecoder.comView reference →
03

Comparison edit

Read side by side

Continue reading

Related articles