Peter Thomas Roth Blue Marine Algae Mask
Works for
MoisturizingGlycerin, Kappaphycus alvarezii extract + 4 moreWorks
“Glacial lake Blue Marine Algae help defend against the damaging effects of dehydration with vital nutrients and moisture.”
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
algae extract, glycerin.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: algae extract, caprylyl glycol.
Anti-oxidationSide benefit · Camellia sinensis leaf extract, Kappaphycus alvarezii extractMay help
This product contains antioxidants (camellia sinensis leaf extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.
Can it cause trouble?
Irritancy1 strong irritant: Salvia officinalis flower/leaf/stem waterMedium risk
Comedogenic1 ingredient rated 2 or more on the 0–5 pore-clogging scale1 flagged
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Ingredients
Filter by role to see what each ingredient is doing.
Water~40–60%
Salvia officinalis flower/leaf/stem water~7.2–10.8%
- Irritation risk
- High
Glycerin~3.4–5.2%
- Irritation risk
- Low
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
More about GlycerinPseudoalteromonas ferment extract~2.7–4%
- Irritation risk
- Low
Camellia sinensis leaf extract~2.1–3.1%
- Irritation risk
- Low
Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation
More about Camellia sinensis leaf extractKappaphycus alvarezii extract~1.7–2.5%
- Irritation risk
- Low
A red algae extract that can help attract water to the upper layer of the skin and might have some antioxidant properties
More about Kappaphycus alvarezii extractAlgae extract~1.5–2.3%
- Irritation risk
- Low
- Comedogenicity
- 3/5
Plant extract that helps the skin to attract water and make it more smooth for touch. Also shows promise of anti-aging properties, but research is not extensive yet
More about Algae extractMaris aqua~1.2–1.7%
Sodium hyaluronate~0.95–1.45%
- Irritation risk
- Low
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
More about Sodium hyaluronateMica~0.95–1.4%
- Irritation risk
- Low
Creates an illusion of smoother and more radiant skin tone. Adds shimmer to the skin by reflecting light
More about MicaSilica~0.95–1.4%
Carbomer~0.4–1%
- Irritation risk
- Low
Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations
More about CarbomerSodium hydroxide~0.35–0.85%
Disodium edta~0.2–0.75%
Citric acid~0.15–0.65%
- Irritation risk
- Medium
Can work as an exfoliant but is typically used to adjust the product pH
More about Citric acidCaprylyl glycol~0.15–0.65%
- Irritation risk
- Medium
Helps preserve products and creates a nice product texture
More about Caprylyl glycolPotassium sorbate~0.1–0.4%
Sodium benzoate~0.05–0.3%
Phenoxyethanol~0.05–0.25%
- Irritation risk
- Low
A preservative. It helps prevent bacterial growth in cosmetic products
More about PhenoxyethanolTitanium dioxide~0.05–0.25%
- Irritation risk
- Low
Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin
More about Titanium dioxideCi 42090~0.05–0.15%
Ingredient list view
Water, Salvia officinalis flower/leaf/stem water, Glycerin, Pseudoalteromonas ferment extract, Camellia sinensis leaf extract, Kappaphycus alvarezii extract, Algae extract, Maris aqua, Sodium hyaluronate, Mica, Silica, Carbomer, Sodium hydroxide, Disodium edta, Citric acid, Caprylyl glycol, Potassium sorbate, Sodium benzoate, Phenoxyethanol, Titanium dioxide, Ci 42090
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Worth comparing, line by line.
Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.
| Peter Thomas RothBlue Marine Algae MaskYOUR PRODUCT | CliniqueEven Better Brighter Moisture Mask | OriginsMaskimizer Skin-Optimizing Mask Primer | Elizabeth GrantCaviar Nutruriche Gold Mask | |
|---|---|---|---|---|
| Match | — | 40% | 38% | 36% |
| Price | — | $56.38 | — | — |
| Shared key ingredients | — | 4 of 5 | 4 of 5 | 3 of 5 |
| Key difference | — | Ascorbyl Glucoside | Urea | Panthenol |
| Irritancy | Medium | Medium | Medium | Medium |
| Drying alcohol | — | — | — | — |
| View product | Shop | Shop | Shop |
More alternatives: Jan Marini Retinol Plus MaskADVANCED CLINICALS Hyaluronic Acid Face Gel Mask
Sources cited in this review
Every concentration estimate and effectiveness label is anchored to one of these 3 studies and safety reviews.
- 1
- 2Hyaluronic acid: A key molecule in skin agingncbi.nlm.nih.gov
- 3
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