SPF Scout · Product record
La Roche-Posay La Roche Posay Laboratoire Dermatologique Toleriane Double Repair Moisturizer UV Broad Spectrum SPF 30 Sunscreen
SPF 30 as labeled
U.S. formulation · record last retrieved 21 September 2026
What is listed
The ingredient declaration stored for this formulation, reproduced exactly as it was recorded from the source below.
28 entries · the stored declaration is recorded as complete.
What each ingredient generally does
Each entry that matched a canonical ingredient, with the function recorded for it. These notes describe the role an ingredient plays in a formulation. They do not assess an ingredient.
Avobenzone
Light stabiliser (protects the formula from light)UV absorber (protects the formula from light, not a sunscreen filter)UV filter (filters UV rays)An organic UV filter that absorbs ultraviolet light. It also acts as a light stabilizer, helping the formula hold up under sun exposure. On labels it also appears as Butyl Methoxydibenzoylmethane.
Homosalate
Fragrance ingredient (scent)UV absorber (protects the formula from light, not a sunscreen filter)UV filter (filters UV rays)An organic UV filter that absorbs ultraviolet light. It also adds scent to the product.
Octisalate
Light stabiliser (protects the formula from light)UV absorber (protects the formula from light, not a sunscreen filter)UV filter (filters UV rays)An organic UV filter that absorbs ultraviolet light, and doubles as a light stabilizer to keep the formula steady in sun. It also appears on labels as Ethylhexyl Salicylate.
Octocrylene
Light stabiliser (protects the formula from light)UV absorber (protects the formula from light, not a sunscreen filter)UV filter (filters UV rays)An organic UV filter that absorbs ultraviolet light. It also serves as a light stabilizer, helping keep other filters and the formula intact under sunlight.
Water
Antiplaque (CosIng functional class)otherSkin conditioning (CosIng functional class)Solvent (dissolves other ingredients)The base liquid that most of the other ingredients dissolve or spread into. It carries the formula and helps condition the skin surface.
Glycerin
Denaturant (makes alcohol undrinkable)Fragrance ingredient (scent)Hair conditioning (CosIng functional class)Humectant (holds moisture)Oral care (CosIng functional class)Skin conditioning (CosIng functional class)Skin protecting (CosIng functional class)Solvent (dissolves other ingredients)Viscosity control (thickens or thins the formula)Glycerin draws in and holds moisture while conditioning and protecting skin. It also dissolves other ingredients, adjusts thickness, and can add scent. On labels it may appear as glycerol.
Silica
Abrasive (physically scrubs)Absorbent (takes up oil or water)Anticaking (keeps powder free-flowing)Bulking agent (adds volume)Opacifier (makes the formula less see-through)otherViscosity control (thickens or thins the formula)Silica is a fine mineral powder that soaks up excess moisture and oil, and adjusts how thick the product feels. It keeps powders from clumping, adds bulk, and can make a formula look more opaque. Its chemical name is silicon dioxide.
Dimethicone
Antifoaming (stops the formula foaming)Emollient (softens and smooths skin)Skin conditioning (CosIng functional class)Skin protecting (CosIng functional class)A silicone that softens and smooths skin feel and forms a protective layer on the surface. It also cuts down foam during production, keeping the formula settled.
An ingredient that smooths the skin's surface. In practice, it helps the product leave skin feeling even.
PEG-100 Stearate
Surfactant (cleanses or mixes oil and water)A cleansing surfactant, meaning it helps lift away oil and dirt. It's often paired with other emulsifiers in creams.
Glyceryl Stearate
Emollient (softens and smooths skin)Skin conditioning (CosIng functional class)Surfactant (cleanses or mixes oil and water)Glyceryl Stearate is an emollient that softens and smooths skin feel. It also acts as an emulsifier, keeping the oil and water parts blended together.
Stearic Acid
Emulsion stabiliser (keeps oil and water mixed)Fragrance ingredient (scent)otherRefatting (CosIng functional class)Surfactant (cleanses or mixes oil and water)Stearic Acid helps oil and water mix, keeps that blend from separating, and cleanses. It also softens skin feel and adds scent, so it keeps the product stable and smooth while contributing fragrance.
Allantoin
otherSkin conditioning (CosIng functional class)Skin protecting (CosIng functional class)Soothing (CosIng functional class)Allantoin is a skin-conditioning and skin-protecting ingredient with a soothing role. It helps keep skin feeling smooth and comfortable and forms a protective feel on the surface.
Ceramide 3 is a lipid that conditions skin and hair, leaving them soft and smooth. It is a retired label name for this ingredient.
Dimethicone/Vinyl Dimethicone Crosspolymer
otherSkin conditioning (CosIng functional class)Viscosity control (thickens or thins the formula)A silicone elastomer that softens and smooths skin feel and adjusts the thickness of the product. In practice it gives a silky, cushioned texture.
Sodium Hydroxide
Buffering (holds the formula at a set acidity)Denaturant (makes alcohol undrinkable)otherSodium Hydroxide is a strongly alkaline ingredient used in tiny amounts to fine-tune a formula's acidity (buffering). This keeps the product's pH steady. It can also act as a denaturant, altering another substance so it stays fit for use in cosmetics rather than being consumed.
Myristic Acid
Fragrance ingredient (scent)Opacifier (makes the formula less see-through)Surfactant (cleanses or mixes oil and water)This is a fatty acid that works as a cleansing agent, helping lift away oil and dirt. It also makes the product look opaque and adds scent.
Myristyl Alcohol
Emollient (softens and smooths skin)Emulsion stabiliser (keeps oil and water mixed)Foam boosting (increases foam from other ingredients)Skin conditioning (CosIng functional class)Surfactant (cleanses or mixes oil and water)Viscosity control (thickens or thins the formula)A fatty alcohol that works as an emollient, softening and smoothing skin feel, and helps oil and water stay mixed. It also adjusts the product's thickness and can boost foam. In practice, it keeps the formula stable and gives it body.
Palmitic Acid
Emollient (softens and smooths skin)Skin conditioning (CosIng functional class)Surfactant (cleanses or mixes oil and water)Palmitic Acid softens and smooths the skin feel while also helping oil and water mix. That means it keeps the formula blended and contributes to how it sits on skin.
Ammonium Polyacryloyldimethyl Taurate
Emulsion stabiliser (keeps oil and water mixed)Viscosity control (thickens or thins the formula)A polymer that helps structure the formula. It keeps the oil and water parts mixed and adjusts the thickness so the product has the right texture.
Disodium EDTA
Chelating (binds metal ions in the formula)otherViscosity control (thickens or thins the formula)An ingredient that binds trace metals that would otherwise spoil the formula, and helps adjust its thickness. This keeps the product stable over time.
Capryloyl Glycine
Anti-seborrheic (CosIng functional class)Anti-sebum (CosIng functional class)Deodorant (masks or reduces odour)Hair conditioning (CosIng functional class)Preservative (inhibits microbial growth)Surfactant (cleanses or mixes oil and water)A cleansing ingredient that also works as a deodorant and helps control sebum and microbes. It conditions hair and helps lift away dirt.
Caprylyl Glycol
Deodorant (masks or reduces odour)Emollient (softens and smooths skin)Hair conditioning (CosIng functional class)Preservative (inhibits microbial growth)Skin conditioning (CosIng functional class)A multi-tasker that conditions skin and hair and acts as a deodorant. As an emollient it softens and smooths, leaving skin feeling conditioned.
Citric Acid
Buffering (holds the formula at a set acidity)Chelating (binds metal ions in the formula)Fragrance ingredient (scent)otherCitric Acid is a mild acid used to fine-tune a formula's pH. It keeps the acidity steady (buffering), binds trace metals that would spoil the formula (chelating), and can add a scent note.
Xanthan Gum
Binder (holds the formula together)Emulsion stabiliser (keeps oil and water mixed)Gel forming (sets the formula into a gel)otherSkin conditioning (CosIng functional class)Surfactant (cleanses or mixes oil and water)Viscosity control (thickens or thins the formula)A thickener that adjusts how thick the product is and forms a gel-like texture. It keeps oil and water mixed and stops the blend from separating, giving a stable, even feel.
T-Butyl Alcohol
Denaturant (makes alcohol undrinkable)Fragrance ingredient (scent)Solvent (dissolves other ingredients)This is a solvent, meaning it dissolves other ingredients and keeps them evenly mixed. It also acts as a denaturant (making any alcohol in the mix undrinkable) and can add scent. In practice it helps the formula stay uniform and pourable.
Cetyl Alcohol
Emollient (softens and smooths skin)Emulsion stabiliser (keeps oil and water mixed)Foam boosting (increases foam from other ingredients)Fragrance ingredient (scent)Opacifier (makes the formula less see-through)Skin conditioning (CosIng functional class)Surfactant (cleanses or mixes oil and water)Viscosity control (thickens or thins the formula)A multitasking fatty alcohol that helps oil and water mix and keeps the blend stable, while softening skin. It also thickens the formula and makes it more opaque, and can boost foam and cleansing.
Tocopherol
Antioxidant (slows the formula oxidising)Fragrance ingredient (scent)Occlusive (CosIng functional class)otherSkin conditioning (CosIng functional class)Tocopherol is a form of vitamin E used as an antioxidant, which helps keep the formula from going off. It also conditions skin and forms a thin surface layer that slows moisture loss. You may see it listed simply as vitamin E.
Checking this against your own list
SPF Scout's Personal Ingredient Check runs in the app, on your device. This page cannot see a personal avoidance list. Your selections are stored on your phone and are never sent to this website. There is nowhere on our side for them to go.
In the app you choose the ingredients you already avoid, and every entry in this declaration that matches one of them is shown to you with the alias path that produced the match.
This comparison does not predict whether your skin will react.
Source quality
- Source
- DailyMed drug label
- Source record
- https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=be03b588-afbd-41d1-be96-444d735c9768
- Retrieved
- 21 September 2026
- Market
- United States
- Version
- v1 of this U.S. formulation
- Source tier
- Official label document (not independently verified by us)
- Entries recorded
- 28
- Record checksum
- sha256:a1a76e2575c6ab4f74289d921b4859c763fb9158e55414cfc4a289a2a0b5a469
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