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Riemann P20 Once A Day Sunfilter Lotion SPF 3
Riemann

Riemann P20 Once A Day Sunfilter Lotion SPF 3

SPF 3Efficacy25/100IrritancyMedium·6 UV filters
See all ingredients

Works for

Sun protection
SPF 3 · 6 UV filters · Broad spectrum
No real protectionSPF too low
SPF 3Broad spectrumChemical filtersNo white cast

This product does not offer sun protection, or it is very low.

UV spectrum
UVB290–320 nmUVA II320–340 nmUVA I340–400 nm
Homosalate
Octocrylene
Octinoxate
Uvasorb Heb
Uvinul A Plus
Avobenzone
FilterCoverageWhat it doesEst. amount
HomosalateUVB Photo-stable A weak sunscreen that offers some protection against the sun rays that cause sunburn (UVB), but does not offer meaningful protection against protect against the most aging sun rays (UVA). It loses its effectiveness quickly when exposed to sunlight. It is an organic, or so called "chemical" sunscreen. When used in low concentrations, helps to stabilize the product formulation~5.2–7.8%
OctocryleneUVB Photo-stable A weak sunscreen that protects against the sun rays that cause sunburn (UVB) and is somewhat effective against the UVA rays. It is quite stable and can help stabilize other, more vulnerable, sunscreen ingredients like Avobenzone. It is an organic, or so called "chemical" sunscreen~3.5–5.2%
OctinoxateEthylhexyl MethoxycinnamateUVBOctinoxate. When used in higher concentrations, works as a sunscreen protecting the skin from UVB rays. When used in lower concentration, helps to preserve the product formulation. Is shown to be harmful to coral reefs - consider avoiding bathing in coral reef areas when wearing a product with this ingredient. It can be irritating~0.15–0.6%
Uvasorb HebDiethylhexyl Butamido TriazoneUVA2 Photo-stable Uvasorb HEB. A UV filter. Is effective against UVB and UVA II rays (but not UVA I). It is photostable. Unfortunately, is not approved by FDA (US) yet~1–1.5%
Uvinul A PlusDiethylamino Hydroxybenzoyl Hexyl BenzoateUVA1 Photo-stable Uvinul A Plus. A new generation broad spectrum sunscreen that offers an effective protection especially in the UVA range. It is stable in formulations. Unfortunately, is not approved by the FDA (US) yet~4.1–6.1%
AvobenzoneButyl MethoxydibenzoylmethaneUVA1Avobenzone. An organic, or so-called "chemical" UV filter. Protects against both UVA and UVB rays. Needs to be combined with other filters in a formulation to be stable.~1.9–2.9%
~ marks concentrations estimated from label position and typical use levels
Moisturizing
C12-15 alkyl benzoate, Cyclopentasiloxane + 1 more
Not delivered
What the product description says
“Ultra pigmented for 24 hours of intense colour and hydration”
Source: Feelunique

Does not contain the most effective ingredients for moisturization. The emollients (c12-15 alkyl benzoate, cyclopentasiloxane) can help soften the upper layer of the skin. Keep in mind though that this product lacks humectants that attract water. You might want to use a separate product with ingredients like hyaluronic acid or glycerin in addition (use before this product for the best results).

C12-15 alkyl benzoate· EmollientEffect: MediumEnhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth~7.7–11.6%
Cyclopentasiloxane· EmollientEffect: MediumA silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin~1.5–2.2%
Ppg-15 stearyl ether· EmollientEffect: LowHelp soften the upper layer of the skin and create a nice product consistency~2.4–3.6%

Can it cause trouble?

Irritancy
1 strong irritant: Alcohol denat.
Medium risk
We flagged 7 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Alcohol denat.Produces temporary toning effect. Can help dissolve other ingredients or preserve productsHigh~24–35%est.
Ethylhexyl methoxycinnamateOctinoxate. When used in higher concentrations, works as a sunscreen protecting the skin from UVB rays. When used in lower concentration, helps to preserve the product formulation. Is shown to be harmful to coral reefs - consider avoiding bathing in coral reef areas when wearing a product with this ingredient. It can be irritatingHigh~0.15–0.6%est.
HomosalateA weak sunscreen that offers some protection against the sun rays that cause sunburn (UVB), but does not offer meaningful protection against protect against the most aging sun rays (UVA). It loses its effectiveness quickly when exposed to sunlight. It is an organic, or so called "chemical" sunscreen. When used in low concentrations, helps to stabilize the product formulationMedium~5.2–7.8%est.
Diethylamino hydroxybenzoyl hexyl benzoateUvinul A Plus. A new generation broad spectrum sunscreen that offers an effective protection especially in the UVA range. It is stable in formulations. Unfortunately, is not approved by the FDA (US) yetMedium~4.1–6.1%est.
OctocryleneA weak sunscreen that protects against the sun rays that cause sunburn (UVB) and is somewhat effective against the UVA rays. It is quite stable and can help stabilize other, more vulnerable, sunscreen ingredients like Avobenzone. It is an organic, or so called "chemical" sunscreenMedium~3.5–5.2%est.
Butyl methoxydibenzoylmethaneAvobenzone. An organic, or so-called "chemical" UV filter. Protects against both UVA and UVB rays. Needs to be combined with other filters in a formulation to be stable.Medium~1.9–2.9%est.
Diethylhexyl butamido triazoneUvasorb HEB. A UV filter. Is effective against UVB and UVA II rays (but not UVA I). It is photostable. Unfortunately, is not approved by FDA (US) yetMedium~1–1.5%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

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Ingredients

Filter by role to see what each ingredient is doing.

Alcohol denat.~24–35%
Irritant · high
Irritation risk
High

Produces temporary toning effect. Can help dissolve other ingredients or preserve products

More about Alcohol denat.
C12-15 alkyl benzoate~7.7–11.6%
Key active
Irritation risk
Low
Works for
Moisturizing

Enhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth

More about C12-15 alkyl benzoate
Homosalate~5.2–7.8%
UV filterKey activeIrritant · medium
Irritation risk
Medium
Works for
Sun protection

A weak sunscreen that offers some protection against the sun rays that cause sunburn (UVB), but does not offer meaningful protection against protect against the most aging sun rays (UVA). It loses its effectiveness quickly when exposed to sunlight. It is an organic, or so called "chemical" sunscreen. When used in low concentrations, helps to stabilize the product formulation

More about Homosalate
Diethylamino hydroxybenzoyl hexyl benzoate~4.1–6.1%
UV filterKey activeIrritant · medium
Irritation risk
Medium
Works for
Sun protection

Uvinul A Plus. A new generation broad spectrum sunscreen that offers an effective protection especially in the UVA range. It is stable in formulations. Unfortunately, is not approved by the FDA (US) yet

More about Diethylamino hydroxybenzoyl hexyl benzoate
Octocrylene~3.5–5.2%
UV filterKey activeIrritant · medium
Irritation risk
Medium
Works for
Sun protection

A weak sunscreen that protects against the sun rays that cause sunburn (UVB) and is somewhat effective against the UVA rays. It is quite stable and can help stabilize other, more vulnerable, sunscreen ingredients like Avobenzone. It is an organic, or so called "chemical" sunscreen

More about Octocrylene
Ppg-15 stearyl ether~2.4–3.6%
Formula
Irritation risk
Low
Works for
Moisturizing

Help soften the upper layer of the skin and create a nice product consistency

More about Ppg-15 stearyl ether
Butyl methoxydibenzoylmethane~1.9–2.9%
UV filterKey activeIrritant · medium
Irritation risk
Medium
Works for
Sun protection

Avobenzone. An organic, or so-called "chemical" UV filter. Protects against both UVA and UVB rays. Needs to be combined with other filters in a formulation to be stable.

More about Butyl methoxydibenzoylmethane
Cyclopentasiloxane~1.5–2.2%
Key active
Irritation risk
Low
Works for
MoisturizingMattifying

A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin

More about Cyclopentasiloxane
Diethylhexyl butamido triazone~1–1.5%
UV filterKey activeIrritant · medium
Irritation risk
Medium
Works for
Sun protection

Uvasorb HEB. A UV filter. Is effective against UVB and UVA II rays (but not UVA I). It is photostable. Unfortunately, is not approved by FDA (US) yet

More about Diethylhexyl butamido triazone
Acrylates/octylacrylamide copolymer~0.5–1.1%
Formula
Irritation risk
Low
More about Acrylates/octylacrylamide copolymer
Hydroxypropylcellulose~0.3–0.7%
Formula
Irritation risk
Low
Works for
Cleansing
More about Hydroxypropylcellulose
Ethylhexyl methoxycinnamate~0.15–0.6%
UV filterKey activeIrritant · high
Irritation risk
High
Works for
Sun protection

Octinoxate. When used in higher concentrations, works as a sunscreen protecting the skin from UVB rays. When used in lower concentration, helps to preserve the product formulation. Is shown to be harmful to coral reefs - consider avoiding bathing in coral reef areas when wearing a product with this ingredient. It can be irritating

More about Ethylhexyl methoxycinnamate
Ingredient list view

Alcohol denat., C12-15 alkyl benzoate, Homosalate, Diethylamino hydroxybenzoyl hexyl benzoate, Octocrylene, Ppg-15 stearyl ether, Butyl methoxydibenzoylmethane, Cyclopentasiloxane, Diethylhexyl butamido triazone, Acrylates/octylacrylamide copolymer, Hydroxypropylcellulose, Ethylhexyl methoxycinnamate

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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.

Side-by-side comparison of this product against its closest alternatives
RiemannP20 Once A Day Sunfilter Lotion SPF 3YOUR PRODUCTChilds FarmChildren's SPF 50+ Sun Lotion, Water ResistantP20Sunfilter SPF 50GarnierAmbre Solaire Kids Sensitive Advanced Sun Cream Lotion SPF50+
Match—45%44%43%
Price—$13.22—$6.69
Shared key ingredients—4 of 77 of 74 of 7
Key difference—PanthenolButyloctyl SalicylateTinosorb S
Irritancy Medium Low Medium Low
SPFSPF 3SPF 50SPF 50SPF 50
Drying alcohol Contains drying alcohol Contains drying alcohol Contains drying alcohol Contains drying alcohol
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Product summary

"Riemann - P20 Once A Day Sunfilter Lotion SPF 3" "is a broad spectrum sunscreen meaning that it protects both from UVB rays (" burning "- they cause sunburn) and UVA rays (" aging "- they don't cause sunburn but lead to premature aging and pigmentation issues). However, this product does not offer enough sun protection. We recommend to use a sunscreen with at least SPF 30 daily.

Sunscreen filters

This sunscreen uses so-called" chemical ", or organic UV filters (organic simply means that their molecules contain atoms of carbon). These filters typically give good sun protection and rarely leave a white cast, but they can be irritating for sensitive skin. The UV filters in this sunscreen are: avobenzone 1.90% - 2.90%, uvinul a plus 4.10% - 6.10%, uvasorb heb 1.00% - 1.50%, octinoxate 0.15% - 0.60%, homosalate 5.20% - 7.80% and octocrylene 3.50% - 5.20%.

Irritation risk

There are some common irritants in this product, including ingredients that do not have benefits for the skin. We assess the overall irritancy of it to be medium. For a detailed overview of all potential irritants: click here

You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.

Price

The product retails for 66.90£ in the United Kingdom.

For a detailed price comparison: click here.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 2 studies and safety reviews.

  1. 1
    Opinion on Homosalate - Scientific Committee on Consumer Products ec.europa.eu
  2. 2
    Final report on the safety assessment of PPG-11 and PPG-15 stearyl ethersncbi.nlm.nih.gov
Riemann P20 Once A Day Sunfilter Lotion SPF 3
RiemannP20 Once A Day Sunfilter Lotion SPF 3
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