Algenist Genius Sleeping Collagen Versus Peter Thomas Roth Water Drench Hyaluronic Cloud Cream Hydrating Moisturizer

Algenist Genius Sleeping Collagen Versus Peter Thomas Roth Water Drench Hyaluronic Cloud Cream Hydrating Moisturizer

This anti-aging night moisturizer is formulated around Ceramide NP to soften the look of wrinkles and hydrate skin.

This barrier-repair moisturizer is formulated around Sodium Hyaluronate and Ceramide NP to strengthen the skin barrier and hydrate skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Collagen

Water

Ethylhexyl Palmitate

Oryza Sativa Bran Extract

Caprylic/Capric Triglyceride

Glycerin

Cetearyl Methicone

Dimethicone

Cetearyl Alcohol

Pyrus Malus Fruit Extract

Chlorella Protothecoides Oil

Polysorbate 60

Glyceryl Glucoside

Polyglyceryl-2 Stearate

Parachlorella Beijerinckii Exopolysaccharides

Collagen Amino Acids

Ceramide NP

Silybum Marianum Fruit Extract

Helianthus Annuus Extract

Rosmarinus Officinalis Leaf Extract

Tocopherol

Carnosine

Sodium Stearoyl Glutamate

Caprylyl Glycol

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Ethylhexylglycerin

Hexylene Glycol

Citric Acid

Lecithin

Sodium Hydroxide

Sodium Phytate

T-Butyl Alcohol

Leuconostoc/Radish Root Ferment Filtrate

Phenoxyethanol

Triethyl Citrate

Vanillin

Amyl Salicylate

Benzyl Acetate

Cedrus Atlantica Bark Oil

Phenethyl Alcohol

Ionone

Linalool

Collagen, Water, Ethylhexyl Palmitate, Oryza Sativa Bran Extract, Caprylic/Capric Triglyceride, Glycerin, Cetearyl Methicone, Dimethicone, Cetearyl Alcohol, Pyrus Malus Fruit Extract, Chlorella Protothecoides Oil, Polysorbate 60, Glyceryl Glucoside, Polyglyceryl-2 Stearate, Parachlorella Beijerinckii Exopolysaccharides, Collagen Amino Acids, Ceramide NP, Silybum Marianum Fruit Extract, Helianthus Annuus Extract, Rosmarinus Officinalis Leaf Extract, Tocopherol, Carnosine, Sodium Stearoyl Glutamate, Caprylyl Glycol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Ethylhexylglycerin, Hexylene Glycol, Citric Acid, Lecithin, Sodium Hydroxide, Sodium Phytate, T-Butyl Alcohol, Leuconostoc/Radish Root Ferment Filtrate, Phenoxyethanol, Triethyl Citrate, Vanillin, Amyl Salicylate, Benzyl Acetate, Cedrus Atlantica Bark Oil, Phenethyl Alcohol, Ionone, Linalool

Cyclopentasiloxane

Dipropylene Glycol

Cyclohexasiloxane

Yeast Extract

Sodium Hyaluronate

Ceramide EOP

Ceramide Eos

Ceramide AP

Ceramide Ns

Sambucus Nigra Fruit Extract

Hydrolyzed Silk

Sodium PCA

Ascorbyl Palmitate

Caprooyl Phytosphingosine

Caprooyl Sphingosine

Saccharide Isomerate

Saccharomyces/Magnesium Ferment

Saccharomyces/Iron Ferment

Saccharomyces/Copper Ferment

Saccharomyces/Silicon Ferment

Saccharomyces/Zinc Ferment

Olea Europaea Leaf Extract

Methyl Gluceth-20

Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone

Cholesterol

Sodium Chloride

Sodium Citrate

Behenic Acid

Propylene Glycol

Ceteareth-25

Butylene Glycol

Dimethicone/PEG-10/15 Crosspolymer

Cetyl Alcohol

Disodium EDTA

Sodium Benzoate

Potassium Sorbate

Mica

Water, Glycerin, Cyclopentasiloxane, Dipropylene Glycol, Dimethicone, Cyclohexasiloxane, Yeast Extract, Sodium Hyaluronate, Ceramide EOP, Ceramide Eos, Ceramide AP, Ceramide NP, Ceramide Ns, Sambucus Nigra Fruit Extract, Hydrolyzed Silk, Sodium PCA, Tocopherol, Ascorbyl Palmitate, Caprooyl Phytosphingosine, Caprooyl Sphingosine, Saccharide Isomerate, Saccharomyces/Magnesium Ferment, Saccharomyces/Iron Ferment, Saccharomyces/Copper Ferment, Saccharomyces/Silicon Ferment, Saccharomyces/Zinc Ferment, Olea Europaea Leaf Extract, Methyl Gluceth-20, Ethylhexylglycerin, Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone, Cholesterol, Sodium Chloride, Sodium Citrate, Citric Acid, Behenic Acid, Propylene Glycol, Ceteareth-25, Butylene Glycol, Dimethicone/PEG-10/15 Crosspolymer, Cetyl Alcohol, Disodium EDTA, Sodium Benzoate, Potassium Sorbate, Phenoxyethanol, Mica

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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.

Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids.

Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes.

This ceramide works by slotting into gaps within the stratum corneum's lipid matrix to limit trans-epidermal water loss (TEWL) and shield the skin against external irritants.

A study with 312 patients found that using a ceramide-containing routine for 4 weeks reduced the severity of atopic dermatitis by over 61%.

Another clinical study in subjects aged 60 and older found that a ceramide body wash and moisturizer improved skin dryness and itchy skin in 15 days.

Overall, ceramides are considered non-irritating and safety tests have found little to no observable adverse effects from using this ingredient.

Ceramide NP is usually sourced from plants (like soybean or rice bran), or produced synthetically.

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.

Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This 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.

Note: 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.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

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.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It 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.

On 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.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'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.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-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.

Adverse 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.

Tocopherol is a fat-soluble antioxidant known as Vitamin E.

You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.

Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.

It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.

This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.

This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.

In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.

Concentrations usually range from 0.1-1% in most leave-on products.

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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