Peter Thomas Roth Water Drench Broad Spectrum SPF 45 Hyaluronic Cloud Moisturizer Versus La Roche-Posay Toleriane Sensitive Fluide
This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging.
This barrier-repair moisturizer is formulated around Caprylic/Capric Triglyceride and Niacinamide to strengthen the skin barrier and calm redness.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
No concerns
Ingredients Side-by-side
Butyl Methoxydibenzoylmethane 3%
UV Absorber
Homosalate 5%
Skin Conditioning
Ethylhexyl Salicylate 5%
UV Absorber
Octocrylene 10%
UV Absorber
Water
Skin ConditioningPolymethylsilsesquioxane
Glycerin
Humectant
Dipropylene Glycol
HumectantDimethicone
Emollient
Argania Spinosa Kernel Oil
Emollient
Tocopheryl Acetate
Antioxidant
Yeast Extract
Skin ConditioningCyclopentasiloxane
Emollient
Cyclohexasiloxane
Emollient
Phenoxyethanol
Preservative
Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone
Skin Conditioning
Isododecane
EmollientDimethicone/PEG-10/15 Crosspolymer
Saccharide Isomerate
Humectant
Methyl Gluceth-20
Humectant
Sodium Chloride
MaskingSodium Hyaluronate
Humectant
Bisabolol
Antioxidant
PEG-15/Lauryl Dimethicone Crosspolymer
Stabilising
Sodium PCA
Humectant
Propylene Glycol
Humectant
Ceteareth-25
CleansingSodium Benzoate
Masking
Potassium Sorbate
Preservative
Sodium Citrate
BufferingCitric Acid
Buffering
Sambucus Nigra Fruit Extract
AstringentCetyl Alcohol
Emollient
Saccharomyces/Magnesium Ferment
Hydrolyzed Silk
Humectant
Behenic Acid
Cleansing
Ceramide NP
Skin Conditioning
Cholesterol
Emollient
Ethylhexylglycerin
Skin ConditioningTocopherol
Antioxidant
Ceramide Ns
Skin Conditioning
Saccharomyces/Iron Ferment
Skin Conditioning
Saccharomyces/Copper Ferment
Skin Conditioning
Saccharomyces/Silicon Ferment
Skin Conditioning
Saccharomyces/Zinc Ferment
Skin Conditioning
Butylene Glycol
Humectant
Ceramide AP
Skin Conditioning
Ceramide EOP
Skin Conditioning
Ceramide Eos
Skin Conditioning
Olea Europaea Leaf Extract
Perfuming
Caprooyl Phytosphingosine
Skin Conditioning
Caprooyl Sphingosine
Skin ConditioningDisodium EDTA
Ascorbyl Palmitate
Antioxidant
Mica
Cosmetic ColorantButyl Methoxydibenzoylmethane 3%, Homosalate 5%, Ethylhexyl Salicylate 5%, Octocrylene 10%, Water, Polymethylsilsesquioxane, Glycerin, Dipropylene Glycol, Dimethicone, Argania Spinosa Kernel Oil, Tocopheryl Acetate, Yeast Extract, Cyclopentasiloxane, Cyclohexasiloxane, Phenoxyethanol, Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone, Isododecane, Dimethicone/PEG-10/15 Crosspolymer, Saccharide Isomerate, Methyl Gluceth-20, Sodium Chloride, Sodium Hyaluronate, Bisabolol, PEG-15/Lauryl Dimethicone Crosspolymer, Sodium PCA, Propylene Glycol, Ceteareth-25, Sodium Benzoate, Potassium Sorbate, Sodium Citrate, Citric Acid, Sambucus Nigra Fruit Extract, Cetyl Alcohol, Saccharomyces/Magnesium Ferment, Hydrolyzed Silk, Behenic Acid, Ceramide NP, Cholesterol, Ethylhexylglycerin, Tocopherol, Ceramide Ns, Saccharomyces/Iron Ferment, Saccharomyces/Copper Ferment, Saccharomyces/Silicon Ferment, Saccharomyces/Zinc Ferment, Butylene Glycol, Ceramide AP, Ceramide EOP, Ceramide Eos, Olea Europaea Leaf Extract, Caprooyl Phytosphingosine, Caprooyl Sphingosine, Disodium EDTA, Ascorbyl Palmitate, Mica
Reviews
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.
Learn more about Citric AcidGlycerin (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.
Learn more about GlycerinWater. 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!
Learn more about Water
