Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Trader Joe's Ultra Hydrating Gel Moisturizer Versus La Mer Crème De La Mer Moisturizer

Trader Joe's Ultra Hydrating Gel Moisturizer Versus La Mer Crème De La Mer Moisturizer This barrier-repair moisturizer is formulated around Saccharide Isomerate and Squalane to strengthen the skin barrier and hydrate skin. This moisturizer is formulated around

Trader Joe's Ultra Hydrating Gel Moisturizer Versus La Mer Crème De La Mer Moisturizer

This barrier-repair moisturizer is formulated around Saccharide Isomerate and Squalane to strengthen the skin barrier and hydrate skin.

This moisturizer is formulated around Petrolatum and Copper Gluconate to hydrate skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Saccharide Isomerate

Propanediol

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Phenoxyethanol

Polyamide-5

Dimethicone

Hydroxyacetophenone

Polysilicone-11

Squalane

Aloe Barbadensis Leaf Juice

Laureth-12

Cetearyl Olivate

Glyceryl Stearate

Ethylhexylglycerin

Sorbitan Olivate

Helianthus Annuus Seed Oil

Cetearyl Alcohol

Lactobacillus Ferment

Tocopherol

Sodium Stearoyl Lactylate

Sodium Hyaluronate

Silybum Marianum Extract

Betula Alba Leaf Extract

Beta-Sitosterol

Panthenol

Squalene

Cocos Nucifera Fruit Extract

Citric Acid

Camellia Sinensis Leaf Extract

Sodium Citrate

Water, Glycerin, Saccharide Isomerate, Propanediol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Phenoxyethanol, Polyamide-5, Dimethicone, Hydroxyacetophenone, Polysilicone-11, Squalane, Aloe Barbadensis Leaf Juice, Laureth-12, Cetearyl Olivate, Glyceryl Stearate, Ethylhexylglycerin, Sorbitan Olivate, Helianthus Annuus Seed Oil, Cetearyl Alcohol, Lactobacillus Ferment, Tocopherol, Sodium Stearoyl Lactylate, Sodium Hyaluronate, Silybum Marianum Extract, Betula Alba Leaf Extract, Beta-Sitosterol, Panthenol, Squalene, Cocos Nucifera Fruit Extract, Citric Acid, Camellia Sinensis Leaf Extract, Sodium Citrate

Algae Extract

Paraffinum Liquidum

Petrolatum

Isohexadecane

Cera Microcristallina

Lanolin Alcohol

Citrus Aurantifolia Peel Extract

Sesamum Indicum Seed Oil

Eucalyptus Globulus Leaf Oil

Sesamum Indicum Seed Powder

Medicago Sativa Seed Powder

Helianthus Annuus Seedcake

Prunus Amygdalus Dulcis Seed Meal

Sodium Gluconate

Copper Gluconate

Calcium Gluconate

Magnesium Gluconate

Zinc Gluconate

Magnesium Sulfate

Paraffin

Tocopheryl Succinate

Niacin

Beta-Carotene

Decyl Oleate

Aluminum Distearate

Octyldodecanol

Cyanocobalamin

Magnesium Stearate

Zea Mays Oil

Limonene

Geraniol

Linalool

Hydroxycitronellal

Citronellol

Benzyl Salicylate

Benzyl Benzoate

Sodium Benzoate

Alcohol Denat.

Parfum

Algae Extract, Paraffinum Liquidum, Petrolatum, Glycerin, Isohexadecane, Cera Microcristallina, Lanolin Alcohol, Citrus Aurantifolia Peel Extract, Sesamum Indicum Seed Oil, Eucalyptus Globulus Leaf Oil, Sesamum Indicum Seed Powder, Medicago Sativa Seed Powder, Helianthus Annuus Seedcake, Prunus Amygdalus Dulcis Seed Meal, Sodium Gluconate, Copper Gluconate, Calcium Gluconate, Magnesium Gluconate, Zinc Gluconate, Magnesium Sulfate, Paraffin, Tocopheryl Succinate, Niacin, Water, Beta-Carotene, Decyl Oleate, Aluminum Distearate, Octyldodecanol, Citric Acid, Cyanocobalamin, Magnesium Stearate, Panthenol, Zea Mays Oil, Limonene, Geraniol, Linalool, Hydroxycitronellal, Citronellol, Benzyl Salicylate, Benzyl Benzoate, Sodium Benzoate, Alcohol Denat., 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.

Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.

Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.

However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.

Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.

However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.

There are two forms of panthenol: D and L.

D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.

Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):

Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.

This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.

Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.

This ingredient is also referred to as pro-vitamin B5.

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. 03Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.
  4. 04What it does:
  5. 05Dimethicone comes in different viscosities:
  6. 06Depending on the viscosity, dimethicone has different properties.
  7. 07Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
  8. 08This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
  9. 09Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
  10. 10Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  11. 11Topically, glycerin does several things at once:
  12. 12Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
  13. 13Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
  14. 14This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
  15. 15Just know very high concentrations (>40%) can feel tacky in low humidity.
  16. 16Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  17. 17Squalane is the hydrogenated and shelf-stable form of squalene (a lipid that naturally occurs in human sebum).
  18. 18It is an emollient and skin conditioning agent that is able to integrate seamlessly into the skin's lipid barrier without clogging pores.
  19. 19This is due to how structurally similar it is to what your skin already produces.
  20. 20Though it is mostly an emollient that helps soften and hydrate skin, it also has some humectant and occlusive action. Humectants help the skin retain moisture while occlusives seal it in, making squalane a triple-threat moisturizer.
Source · skinsort.com
02

Product index

Related product references

03

Comparison edit

Read side by side