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Peter Thomas Roth Max Mineral Naked Broad Spectrum SPF 45

Peter Thomas Roth

Max Mineral Naked Broad Spectrum SPF 45

SPF 45Efficacy 90/100·Medium irritancy ·4 UV filters

Efficacy measures how well the formula delivers the claims the brand advertises · 2 of 2 advertised claims delivered

The ingredient list suggests that "Peter Thomas Roth - Max Mineral Naked Broad Spectrum SPF 45" can provide reliable sun protection.

Product summary

The ingredient list suggests that "Peter Thomas Roth - Max Mineral Naked Broad Spectrum SPF 45" can provide reliable sun protection. We love that it can protect from both UVA and UVB rays (not all sunscreens with SPF ratings give UVA protection. UVA rays do not cause sunburn, but still damage our skin and lead to early aging).

This product should also be hydrating enough to use without an additional moisturizer during the day. Like all broad-spectrum sunscreens, this product has an anti-aging benefit.

Sunscreen filters

This is a "mixed" sunscreen in the sense that it uses both mineral and organic (so-called "chemical") sun filters. The organic filters in the product are: butyloctyl salicylate. As for the mineral filters, this sunscreen uses both titanium dioxide and zinc oxide.

Irritation risk

This product contains actives that can be irritating. 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 27.84£ in the United Kingdom and for 38.00$ in the United States.

For a detailed price comparison: click here.

Sun protection

This product offers a good level of protection against both UVB and UVA rays.

This sunscreen uses organic (so-called "chemical") sunscreen filters. Organic, or "chemical" filters usually provide reliable sun protection and rarely leave a white cast. Sunscreens with organic filters can sting eyes.

This product can be considered "reef safe" because it does not contain the UV filters (oxybenzone and octinoxate) that can be harmful to coral reefs when present in the water in high concentrations.

UV spectrum

UVB290 nmUVA II320 nmUVA I340 nmVisible400 nm+

Butyloctyl Salicylate

Titanium Dioxide

Zinc Oxide

FilterCoverageWhat it doesEst. amount

Butyloctyl SalicylateUVBA synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its own~8.7–10.6%

Titanium Dioxide Mineral UVBUVA2 Photo-stable 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 skin1.93%

Zinc Oxide Mineral UVBUVA+Visible Photo-stable A broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant19.24%

~ marks concentrations estimated from label position and typical use levels

Reef-safe

No oxybenzone or octinoxate — the two filters banned in Hawaii, Florida Keys and Aruba.

Product claims breakdown

Anti-aging

2 ingredients contribute at the levels below

Strong evidence

This product can help prevent early signs of skin aging because it offers a good level of broad spectrum sun protection. Sun damage is the main cause of premature skin aging, and protecting your skin from the sun is the best anti-aging strategy.

RETINYL PALMITATERole: Under-dosedThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~0.25–0.4%

GLUCONOLACTONERole: Under-dosedA polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals~0.45–0.65%

Titanium dioxideRole: Key activeWorks 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 skin1.93%

Zinc oxideRole: Key activeA broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant19.24%

Butyloctyl salicylateRole: Key activeA synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its own~8.7–10.6%

Carthamus tinctorius seed oilRole: Key activeAn emollient that helps soften the skin and might help calm down inflammation~4.6–5.7%

Cetyl alcoholRole: Key activeA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~2.7–3.3%

Coco-caprylate/caprateRole: Key activeHelps to soften the upper layer of the skin without creating a greasy texture~2.2–2.7%

Ethylhexyl olivateRole: Key activeHelps soften the upper layer of the skin~1.3–1.6%

PolymethylsilsesquioxaneRole: Key activeA silicone that improves product texture and helps dissolve other ingredients. Can form a non-greasy film on the skin to prevent moisture loss~0.6–0.9%

SqualaneRole: Key activeAn oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.~0.55–0.85%

Evens skin tone

Brand does not advertise this — the formula does

Quiet bonus

This product offers broad spectrum sun protection. It means that it can prevent hyperpigmentation and help keep the skin tone even (sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations).

RETINYL PALMITATERole: Under-dosedThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~0.25–0.4%

GLUCONOLACTONERole: Under-dosedA polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals~0.45–0.65%

Titanium dioxideRole: Key activeWorks 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 skin1.93%

Zinc oxideRole: Key activeA broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant19.24%

Butyloctyl salicylateRole: Key activeA synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its own~8.7–10.6%

Carthamus tinctorius seed oilRole: Key activeAn emollient that helps soften the skin and might help calm down inflammation~4.6–5.7%

Cetyl alcoholRole: Key activeA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~2.7–3.3%

Coco-caprylate/caprateRole: Key activeHelps to soften the upper layer of the skin without creating a greasy texture~2.2–2.7%

Ethylhexyl olivateRole: Key activeHelps soften the upper layer of the skin~1.3–1.6%

PolymethylsilsesquioxaneRole: Key activeA silicone that improves product texture and helps dissolve other ingredients. Can form a non-greasy film on the skin to prevent moisture loss~0.6–0.9%

SqualaneRole: Key activeAn oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.~0.55–0.85%

Irritancy

10 flagged ingredients — patch-test recommended

High risk

We flagged 10 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.

IngredientFunctionIrritationEst. amount

Ascorbic acidThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of agingHigh~0.25–0.45%est.

Retinyl palmitateThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effectHigh~0.25–0.4%est.

Butyloctyl salicylateA synthetic ester of salicylic acid that is used to help disperse pigments and boost effectiveness of sunscreen ingredients. It is able to absorb UV light (working as an organic, or chemical filter), but is not approved as a sunscreen ingredient on its ownLow~8.7–10.6%est.

Oleth-3 phosphateHelps water and oil mix togetherLow~0.75–1.1%est.

Polyhydroxystearic acidUsed to create a thicker product consistency and stabilize the formulationLow~0.6–0.9%est.

Disodium edtaStabilizes the product formulationLow~0.45–0.7%est.

GluconolactoneA polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicalsLow~0.45–0.65%est.

Isopropyl titanium triisostearateHelps water and oil mix togetherLow~0.55–0.8%est.

Potassium sorbateA preservativeLow~0.3–0.6%est.

Tocopheryl acetateA more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.Low~0.15–0.3%est.

Comedogenic

Oleth-3 phosphate ~0.75–1.1% — rinse-off or low %

Some risk

These ingredients have a comedogenic rating ≥ 2. In leave-on products at higher concentrations they can clog pores for acne-prone skin types.

IngredientFunctionRatingEst. amount

Oleth-3 phosphateHelps water and oil mix togetherHigh~0.75–1.1%est.

~ marks concentrations estimated from label position and typical use levels

Ingredients

Filter by role to see what each ingredient is doing.

Titanium dioxide1.93%

UV filterKey active

Zinc oxide19.24%

UV filterKey active

Butyloctyl salicylate~8.7–10.6%

UV filterKey activeLow-irritation

C9-12 alkane~6.5–8%

Carthamus tinctorius seed oil~4.6–5.7%

Dicaprylyl carbonate~3.7–4.5%

Isodecyl neopentanoate~3.3–4.1%

Cetyl alcohol~2.7–3.3%

Coco-caprylate/caprate~2.2–2.7%

Propanediol~1.7–2%

Ethylhexyl olivate~1.3–1.6%

Glyceryl stearate~1.2–1.4%

Peg-100 stearate~1.1–1.3%

Cetearyl olivate~0.95–1.2%

Cetearyl phosphate~0.8–1.2%

Triethoxycaprylylsilane~0.9–1.1%

Phenoxyethanol~0.5–1%

Sorbitan olivate~0.75–1.15%

Oleth-3 phosphate~0.75–1.1%

Comedo · highLow-irritation

Hdi/trimethylol hexyllactone crosspolymer~0.65–1%

Peg-8 dimethicone~0.65–0.95%

Alumina~0.7–1.05%

Xanthan gum~0.65–0.95%

Polymethylsilsesquioxane~0.6–0.9%

Polyhydroxystearic acid~0.6–0.9%

Disodium edta~0.45–0.7%

Squalane~0.55–0.85%

Gluconolactone~0.45–0.65%

Under-dosedLow-irritation

Isopropyl titanium triisostearate~0.55–0.8%

Sodium benzoate~0.25–0.5%

Hydrogen dimethicone~0.45–0.65%

Potassium sorbate~0.3–0.6%

Silica~0.5–0.8%

Mica~0.35–0.65%

Ascorbic acid~0.25–0.45%

Under-dosedIrritant · high

Octyldodecanol~0.3–0.5%

Retinyl palmitate~0.25–0.4%

Under-dosedIrritant · high

Sodium propoxyhydroxypropyl thiosulfate silica~0.2–0.4%

Tocopheryl acetate~0.15–0.3%

Diamond powder~0.2–0.35%

Iron oxides~0.1–0.2%

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